bol.com

bol.com is SSL secured

Free website and domain report on bol.com

Last Updated: 25th July, 2023 Update Now
Overview

Snoop Summary for bol.com

This is a free and comprehensive report about bol.com. Bol.com is hosted in Utrecht, Provincie Utrecht in Netherlands on a server with an IP address of 185.14.169.113, where the local currency is EUR and Dutch is the local language. Our records indicate that bol.com is owned/operated by bol.com b.v.. Bol.com is expected to earn an estimated $6,935 USD per day from advertising revenue. The sale of bol.com would possibly be worth $5,062,795 USD. This figure is based on the daily revenue potential of the website over a 24 month period. Bol.com receives an estimated 744,863 unique visitors every day - an insane amount of traffic! This report was last updated 25th July, 2023.

About bol.com

Site Preview: bol.com bol.com
Title: De winkel van ons allemaal | bol.com
Description: Bol.com is de grootste mediawinkel van Nederland. Bezoekers hebben toegang tot ruim 2 miljoen artikelen op het gebied van Nederlandse boeken, Engelse boeken, muziek, dvd’s, notebooks, software, pc-accessoires, games, elektronica, mobiele telefonie en 2ehands boeken
Keywords and Tags: avengers endgame blu ray, avengers endgame dvd, boeken, bol, bol com, bol com airco, bol com barbie, bol com klantenservice bellen, bol com sinterklaas boek, burn after writing, kaart amerika, loopauto, online shopping, popular, suicide squad dvd, trackitt, wwwg
Related Terms: 2ehands, beste boeken 2017, bhojpuri bol bum song, bol bum mp3, bol.com, elektronica, muziek uitgaan, ons, php boeken, toegang
Fav Icon:
Age: Over 26 years old
Domain Created: 19th December, 1997
Domain Updated: 2nd December, 2021
Domain Expires: 18th December, 2022
Review

Snoop Score

4/5 (Excellent!)

Valuation

$5,062,795 USD
Note: All valuation figures are estimates.

Popularity

Very High
Note: Popularity is estimated.

Rank, Reach and Authority

Alexa Rank: 3,190
Alexa Reach: 0.0190%
SEMrush Rank (US): 16,661
SEMrush Authority Score: 81
Moz Domain Authority: 90
Moz Page Authority: 66

Rank By Country

Country Alexa Rank
Belgium Flag Belgium 32
India Flag India 23,009
Japan Flag Japan 8,463
Netherlands Flag Netherlands 34
Turkey Flag Turkey 13,773
Taiwan, Province Of China Flag Taiwan, Province Of China 6,156
United States Flag United States 20,543

Organic vs Paid (Google Ads)

Organic Paid
Keywords: 776,958 173
Traffic: 154,718 4,708
Cost: $11,112 USD $5,629 USD
Traffic

Visitors

Daily Visitors: 744,863
Monthly Visitors: 22,671,280
Yearly Visitors: 271,874,960
Note: All visitors figures are estimates.

Visitors By Country

Country Visitors (Unique) Percentage
Belgium Flag Belgium Daily: 253,998
Monthly: 7,730,907
Yearly: 92,709,361
34.1%
India Flag India Daily: 14,152
Monthly: 430,754
Yearly: 5,165,624
1.9%
Japan Flag Japan Daily: 29,795
Monthly: 906,851
Yearly: 10,874,998
4%
Netherlands Flag Netherlands Daily: 350,830
Monthly: 10,678,173
Yearly: 128,053,106
47.1%
Other Daily: 56,610
Monthly: 1,723,017
Yearly: 20,662,497
7.6%
Turkey Flag Turkey Daily: 3,724
Monthly: 113,356
Yearly: 1,359,375
0.5%
Taiwan, Province Of China Flag Taiwan, Province Of China Daily: 5,214
Monthly: 158,699
Yearly: 1,903,125
0.7%
United States Flag United States Daily: 30,539
Monthly: 929,522
Yearly: 11,146,873
4.1%
Note: All visitors figures are estimates.
Revenue

Revenue

Daily Revenue: $6,935 USD
Monthly Revenue: $211,089 USD
Yearly Revenue: $2,531,392 USD
Note: All revenue figures are estimates.

Revenue By Country

Country Revenue Percentage
Belgium Flag Belgium Daily: $379 USD
Monthly: $11,533 USD
Yearly: $138,305 USD
5.5%
India Flag India Daily: $270 USD
Monthly: $8,203 USD
Yearly: $98,369 USD
3.9%
Japan Flag Japan Daily: $96 USD
Monthly: $2,921 USD
Yearly: $35,033 USD
1.4%
Netherlands Flag Netherlands Daily: $1,907 USD
Monthly: $58,031 USD
Yearly: $695,908 USD
27.5%
Other Daily: $0 USD
Monthly: $0 USD
Yearly: $0 USD
<0.1%
Turkey Flag Turkey Daily: $9 USD
Monthly: $264 USD
Yearly: $3,166 USD
0.1%
Taiwan, Province Of China Flag Taiwan, Province Of China Daily: $3 USD
Monthly: $86 USD
Yearly: $1,028 USD
<0.1%
United States Flag United States Daily: $4,273 USD
Monthly: $130,051 USD
Yearly: $1,559,582 USD
61.6%
Note: All revenue figures are estimates.
SEO

Backlinks Analysis (SEMrush)

Backlinks: 138,734,871
Referring Domains: 54,660
Referring IPs: 38,314
Bol.com has 138,734,871 backlinks according to SEMrush. 59% of these backlinks are "dofollow" (follow) links which allow the flow of link equity to pass through, which may improve bol.com's search engine rankings. Other links are treated as 'hints' by search engines and may also pass link equity, depending on what search engines decide in each case.
100% of bol.com's backlinks are text and image links, which are ideal for SEO. Other backlink types may be unrecognized or ignored by search engines.

Top New Follow Links

1
Source: https://www.hondenplaza.nl/
Target: https://partner.bol.com/click/click?f=TXL&name=Hondenplaza.nl&p=2&s=1014868&t=url&url=https%3A%2F%2Fwww.bol.com%2Fnl%2Fm%2Fhonden%2F

2
Source: https://www.hondenplaza.nl/
Target: https://partner.bol.com/click/click?f=TXL&name=Hondenplaza.nl&p=2&s=1014868&t=url&url=https%3A%2F%2Fwww.bol.com%2Fnl%2Fm%2Fhonden%2F

3
Source: https://www.hondenplaza.nl/
Target: https://partner.bol.com/click/click?f=TXL&name=Hondenplaza.nl&p=2&s=1014868&t=url&url=https%3A%2F%2Fwww.bol.com%2Fnl%2Fm%2Fhonden%2F

4
Source: https://www.zijaanzij.nl/
Target: https://partner.bol.com/click/click?f=BAN&name=Boeken&p=1&s=45610&subid&t=url&url=https%3A%2F%2Fwww.bol.com%2Fnl%2Fm%2Fboeken%2F

5
Source: https://www.interieurinspiratie.nl/
Target: https://partner.bol.com/click/click?f=BAN&name=Huishouden&p=1&s=1050883&subid=Banner%20maart&t=url&url=https%3A%2F%2Fwww.bol.com%2Fnl%2Fl%2Fhuishouden%2FN%2F12001%2F

Top Ranking Keywords (US)

1
Keyword: bol
Ranked Page: https://www.bol.com/nl/

2
Keyword: bol com
Ranked Page: https://www.bol.com/nl/

3
Keyword: boeken
Ranked Page: https://www.bol.com/nl/m/boeken/

4
Keyword: wwwg
Ranked Page: https://www.bol.com/nl/p/indesit-xwda-751480x-wwwg-eu-was-droogcombinatie/9200000023998538/

5
Keyword: burn after writing
Ranked Page: https://www.bol.com/nl/f/burn-after-writing/9200000021902636/

Domain Analysis

Value Length
Domain: bol.com 7
Domain Name: bol 3
Extension (TLD): com 3
Expiry Check:

Page Speed Analysis

Average Load Time: 1.37 seconds
Load Time Comparison: Faster than 59% of sites

PageSpeed Insights

Avg. (All Categories) 90
Performance 95
Accessibility 94
Best Practices 92
SEO 92
PWA 78
0–49 (Fail) 50–89 (Average) 90–100 (Pass)
URL: https://www.bol.com/nl/nl/
Updated: 9th April, 2022

0.64 seconds
First Contentful Paint (FCP)
96%
2%
2%

0.00 seconds
First Input Delay (FID)
96%
2%
2%

Simulate loading on desktop
95

Performance

Indicates how well the page is performing and highlights opportunities where performance may be improved for bol.com. This includes details about optimizing page load times which can result in a better user experience.

Metrics

First Contentful Paint — 0.6 s
The time taken for the first image or text on the page to be rendered.
Time to Interactive — 0.8 s
The time taken for the page to become fully interactive.
Total Blocking Time — 0 ms
The total blocking time is the sum of all time periods between First Contentful Paint and Time to Interactive (when task length exceeded 50ms).
Cumulative Layout Shift — 0.004
Cumulative Layout Shift is the measurement of visible elements collective movement within the viewport.
View Data

Audits

Max Potential First Input Delay — 40 ms
Users could experience a delay when interacting with the page.
First Meaningful Paint — 0.8 s
The time taken for the primary content of the page to be rendered.
Network Requests
Below is a list of network requests that were made during page load.
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application/javascript
Script
https://swa.bol.com/b/ss/advbolprod2/1/JS-1.4.3/s05470954666522?AQB=1&pccr=true&vidn=3128A105E707B677-600012D1F4F31792&ndh=1&pf=1&t=9%2F3%2F2022%201%3A21%3A31%206%20420&fid=265E20071CDDB5D9-16455D08B87852B3&ce=UTF-8&ns=bol&pageName=%2Fnl%2Fnl%2F&g=https%3A%2F%2Fwww.bol.com%2Fnl%2Fnl%2F&cc=EUR&ch=main&server=wspc72&events=event225%2Cevent31%2Cevent32&products=%3B%3B%3B%3B%3Bevent31%3D1649492491344&c1=main%3Aalgemeen&v1=D%3Dc1&h1=main%2Falgemeen&l1=editorials%2Cadvertisement_banner%2Cpromotion_carousel_advertisement%2Cmain_banner%2Ccategory_entries%2Cshopthelook_category_entries%2Cdoormat%2Cpersonal_slot%2Crecently_viewed_slot%2Cdaydeal_promotional_banner%2Cgift_entries%2Cemail_banner&c2=no%20cms%20page&v2=D%3Dc2&h2=%2Fnl%2Fnl%2F&c3=https%3A%2F%2Fwww.bol.com%2Fnl%2Fnl%2F&v3=D%3Dch&l3=CUI-CHITOS-REFUND_a%2CWSP-css-override-3_control%2CWSP-css-override-6_a&v4=wspc72&v12=not%20logged%20in&v13=New&v14=entry%20page&v21=unknown&c26=1649492491344&v26=D%3Dc3&c30=kh81irk4mtjstrs2zqc39r971bbb1k91&c34=home&c36=xlarge&c37=select%3Ano%7Cnl&c45=1649492491344&c46=2.136.0&v51=www.bol.com%2CDESKTOP&v52=D%3Dv14&v55=365af8ee-4932-4191-8e44-b7d14dc790e6&c56=US%3Aen-US%3ANL%3Anl-NL_bolcom_media_www%3A&c60=px%3Acommon.page.view&c68=%2F&v80=1%2C1&v93=thirdPartyCookies%3Aunknown%7Ccrm%3Aunknown%7CbrowseData%3Aunknown&s=800x600&c=24&j=1.6&v=N&k=Y&bw=1350&bh=940&AQE=1
h2
2727.6970001403
2759.4169999938
803
43
200
image/gif
Image
https://c.go-mpulse.net/api/config.json?key=U6CQQ-EHDKM-7D3EX-GAL5G-T4UWT&d=www.bol.com&t=5498308&v=1.700.0&sl=0&si=3bcb23df-5d7c-472e-b57c-dda91d3e1f62-ra2cjt&plugins=ConfigOverride,Continuity,PageParams,IFrameDelay,AutoXHR,SPA,History,Angular,Backbone,Ember,RT,CrossDomain,BW,PaintTiming,NavigationTiming,ResourceTiming,Memory,CACHE_RELOAD,Errors,TPAnalytics,UserTiming,Akamai,Early,LOGN&acao=
http/1.1
2805.2290000487
2904.620999936
1407
3291
200
application/json
XHR
https://68794905.akstat.io/
3447.7079999633
3449.9030001462
0
0
-1
Ping
https://bltg.s-bol.com/v1/client-interaction
4106.8750000559
4108.6140000261
0
0
-1
Ping
Network Round Trip Times — 0 ms
High Network RTT (Round Trip Times) can have a large impact on performance. Providing servers geographically closer to the user could improve performance.
Server Backend Latencies — 0 ms
High server latencies indicate the server is overloaded or has a poor backend performance.
Tasks
Below is a list of the top-level main thread tasks that executed during page load.
Start Time (Ms) End Time (Ms)
1201.623
9.741
1216.443
23.129
1252.485
11.826
1268.482
9.478
1291.377
19.179
1314.405
9.232
1325.813
5.392
1332.316
31.69
1365.353
5.806
1378.189
15.195
1394.177
24.896
1422.117
15.57
1437.818
52.521
1490.401
20.068
1510.48
11.345
1521.967
53.725
1575.759
7.057
1583.196
39.285
1623.066
7.262
1649.206
11.09
1713.776
14.707
2439.647
5.082
2501.486
5.354
2626.386
14.184
2646.173
6.364
2660.823
8.567
2679.06
9.538
2693.014
36.657
2840.278
15.802
2972.838
13.632
3488.671
14.112
Diagnostics
Below is a collection of useful page vitals.
View Data
Metrics
Below is a collection of metrics.
View Data
Script Treemap Data
Provide as required, for treemap app.

Other

Eliminate render-blocking resources
Resources, such as JavaScript and style sheets, can block the first paint of the page. Bol.com should consider delivering critical JavaScript/style sheets (JS/CSS) inline and deferring all non-critical JS/CSS.
Properly size images — Potential savings of 118 KiB
Images can slow down the page's load time. Bol.com should consider serving more appropriate-sized images.
URL Resource Size (Bytes) Potential Savings (Bytes)
https://s.s-bol.com/nl/upload/images/visual-categories/14648.jpg
44927
29096
https://s.s-bol.com/nl/upload/images/visual-categories/8299.jpg
13078
8470
https://media.s-bol.com/Jl2gQN1Z61Ml/ANn2YEz/160x160.jpg
7869
7377
https://media.s-bol.com/Y0nA5gn9qXmA/K1O2Vln/160x160.jpg
7417
6953
https://media.s-bol.com/qDr0ZW8rGrpR/Mwj2Vn3/160x160.jpg
7315
6858
https://s.s-bol.com/nl/upload/images/visual-categories/14035.jpg
10252
6640
https://media.s-bol.com/3OpnyxX8yg84/vlgzp6r/160x160.jpg
7073
6631
https://media.s-bol.com/qDr0MxLoyZJ7/zvmEwg8/160x160.jpg
6658
6242
https://media.s-bol.com/qDr0ADLr5rP2/GvZ2VN0/160x160.jpg
6337
5941
https://media.s-bol.com/Jl2gE9mq6NJD/JyZ29ko/160x160.jpg
6040
5663
https://media.s-bol.com/Y0nA5XmJXWJM/D1R2VKn/160x160.jpg
5976
5603
https://media.s-bol.com/3OpnYljOmqq4/BNg2YGJ/160x160.jpg
5905
5536
https://s.s-bol.com/nl/upload/images/visual-categories/7934.jpg
8523
5520
https://s.s-bol.com/nl/upload/images/visual-categories/3136.jpg
8148
5277
https://s.s-bol.com/nl/upload/images/visual-categories/43228.jpg
7961
5156
https://media.s-bol.com/7YBK0VMNz1ZB/16w1kRP/160x160.jpg
4479
4199
Defer offscreen images
Time to Interactive can be slowed down by resources on the page. Bol.com should consider lazy-loading offscreen and hidden images.
Minify CSS
Cascading Style Sheets (CSS) files can contribute to network payload sizes. Bol.com should consider minifying CSS files.
Minify JavaScript
JavaScript (JS) files can contribute to network payload sizes and increase script parse times. Bol.com should consider minifying JS files.
Reduce unused CSS — Potential savings of 74 KiB
Dead and/or unused rules in Style Sheets (CSS) can contribute to network payload sizes. Bol.com should consider removing dead rules from style sheets and deferring the loading of CSS not used for above-the-fold content.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://assets.s-bol.com/nl/static/assets/css/wsp-catalog.min.52f5abcf7f73c9315b96.css
71936
64075
@media (min-width:48em){h1{font-size:1.75rem} ...
18649
12182
Reduce unused JavaScript — Potential savings of 105 KiB
It is advised to remove unused JavaScript in order to reduce bytes consumed by network activity.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://assets.s-bol.com/nl/static/assets/js/common-vendor.852499c09ca3f452006c.bundle.js
53916
33436
https://assets.s-bol.com/nl/static/assets/js/wsp-elements.fd63b187d23470aea1fb.bundle.js
38292
29072
https://c.go-mpulse.net/boomerang/U6CQQ-EHDKM-7D3EX-GAL5G-T4UWT
49374
22980
https://assets.s-bol.com/nl/static/assets/js/common-own.1384618d7be9d9c6d0a3.bundle.js
26833
22441
Efficiently encode images — Potential savings of 126 KiB
Unoptimized images can consume more cellular data than what is necessary.
URL Resource Size (Bytes) Potential Savings (Bytes)
https://s.s-bol.com/nl/upload/images/ps/banners/campagne/2022/woon-deals/151_e8d40b01-8c40-4205-9cb7-d5c9a21c5c2f.jpg
75179
39219
https://s.s-bol.com/nl/upload/images/ps/banners/campagne/2022/woon-deals/151_938af050-4bf4-4a39-b95a-c1ea47d2c7a5.jpg
74040
36921
https://s.s-bol.com/nl/upload/images/visual-categories/14648.jpg
44927
35235
https://s.s-bol.com/nl/upload/images/ps/banners/campagne/2022/woon-deals/151_5d4d17cc-a322-4b4b-add8-a52cec130464.jpg
36957
18148
Serve images in next-gen formats — Potential savings of 232 KiB
Consider JPEG 2000, JPEG XR or WebP image formats which provide better compression than PNG and JPEG.
URL Resource Size (Bytes) Potential Savings (Bytes)
https://s.s-bol.com/nl/upload/images/ps/banners/campagne/2022/woon-deals/151_e8d40b01-8c40-4205-9cb7-d5c9a21c5c2f.jpg
75179
58929.8
https://s.s-bol.com/nl/upload/images/ps/banners/campagne/2022/woon-deals/151_938af050-4bf4-4a39-b95a-c1ea47d2c7a5.jpg
74040
57159.45
https://s.s-bol.com/nl/upload/images/visual-categories/14648.jpg
44927
40609.6
https://s.s-bol.com/nl/upload/images/ps/banners/campagne/2022/wonen/Middelen/31561-2022_Q1_Wonen-OOH_1_hoofdmiddelen_mhp-header.jpg
73220
37783.95
https://s.s-bol.com/nl/upload/images/ps/banners/campagne/2022/woon-deals/151_5d4d17cc-a322-4b4b-add8-a52cec130464.jpg
36957
28932.35
https://s.s-bol.com/nl/upload/images/ps/banners/supermarkt/2022/Fkexbanner_wk14_Pukka.jpg
33044
13956.3
Enable text compression — Potential savings of 15 KiB
Text-based resources should be served with compression, such as gzip, deflate or brotli.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://firefly.bol.com/js/0.3.4/performance-metrics.js
20583
15507
Preconnect to required origins
Resource hints, such as 'preconnect' or 'dns-prefetch', may assist in establishing early connections to important third-party origins.
Avoid multiple page redirects — Potential savings of 190 ms
Redirects can cause additional delays before the page can begin loading. Bol.com should avoid multiple or unnecessary page redirects.
URL Time Spent (Ms)
http://bol.com/
190
https://www.bol.com/nl/nl/
0
Preload key requests
Key requests can be preloaded by using '<link rel=preload>'. Bol.com should consider using '<link rel=preload>' to prioritize fetching resources that are currently requested later in page load.
Use video formats for animated content
Large GIFs are inefficient for delivering animated content. It is recommended to use MPEG4/WebM videos for animations and PNG/WebP for static images instead of GIF.
Remove duplicate modules in JavaScript bundles
Ensure that no duplicate JavaScript modules from bundles exist to reduce bytes consumed by network activity.
Avoid serving legacy JavaScript to modern browsers — Potential savings of 5 KiB
Polyfills and transforms enable legacy browsers to use new JavaScript features. For bundled JavaScript it is recommended to adopt a modern script deployment strategy using module/nomodule feature detection. This will reduce the amount of code shipped to modern browsers.
URL Potential Savings (Bytes)
https://assets.s-bol.com/nl/static/assets/js/wsp-elements.fd63b187d23470aea1fb.bundle.js
5193
https://firefly.bol.com/js/0.3.4/performance-metrics.js
276
Preload Largest Contentful Paint image
It is recommended to preload images used by LCP elements, to improve LCP time.
URL Potential Savings (Ms)
https://s.s-bol.com/nl/upload/images/ps/banners/campagne/2022/wonen/Middelen/31561-2022_Q1_Wonen-OOH_1_hoofdmiddelen_mhp-header.jpg
0
Avoids enormous network payloads — Total size was 1,128 KiB
Large network payloads can cost users money and are linked to long load times.
URL Transfer Size (Bytes)
https://www.bol.com/nl/nl/
87447
https://s.s-bol.com/nl/upload/images/ps/banners/campagne/2022/woon-deals/151_e8d40b01-8c40-4205-9cb7-d5c9a21c5c2f.jpg
75680
https://s.s-bol.com/nl/upload/images/ps/banners/campagne/2022/woon-deals/151_938af050-4bf4-4a39-b95a-c1ea47d2c7a5.jpg
74541
https://s.s-bol.com/nl/upload/images/ps/banners/campagne/2022/wonen/Middelen/31561-2022_Q1_Wonen-OOH_1_hoofdmiddelen_mhp-header.jpg
73721
https://assets.s-bol.com/nl/static/assets/css/wsp-catalog.min.52f5abcf7f73c9315b96.css
71936
https://assets.s-bol.com/nl/static/assets/js/common-vendor.852499c09ca3f452006c.bundle.js
53916
https://c.go-mpulse.net/boomerang/U6CQQ-EHDKM-7D3EX-GAL5G-T4UWT
49374
https://s.s-bol.com/nl/upload/images/visual-categories/14648.jpg
45428
https://assets.s-bol.com/nl/static/assets/webfonts/Produkt/Produkt-Super-Web.woff2
43913
https://assets.s-bol.com/nl/static/assets/webfonts/Produkt/Produkt-Bold-Web.woff2
43836
Uses efficient cache policy on static assets — 1 resource found
Bol.com can speed up repeat visits by increasing the cache lifetime, which is essentially how long before a cached copy expires.
URL Cache TTL (Ms) Transfer Size (Bytes)
https://c.go-mpulse.net/boomerang/U6CQQ-EHDKM-7D3EX-GAL5G-T4UWT
604800000
49374
Avoid chaining critical requests — 1 chain found
Below is a list of Critical Request Chains, which shows which resources are loaded with a high priority. Bol.com should consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.
User Timing marks and measures — 3 user timings
Make use of the User Timing API to measure an app's real-world performance during key user experiences.
Name Type Start Time (Ms) Duration (Ms)
first_anim_frame
Mark
1238.335
doc_ready
Mark
1388.269
win_ready
Mark
2584.264
JavaScript execution time — 0.1 s
JavaScript (JS) execution time can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
URL Total CPU Time (Ms) Script Evaluation (Ms) Script Parse (Ms)
https://www.bol.com/nl/nl/
343.564
91.438
6.13
Unattributable
110.006
4.174
0.167
https://assets.s-bol.com/nl/static/assets/js/wsp-elements.fd63b187d23470aea1fb.bundle.js
67.033
27.396
3.762
Minimizes main-thread work — 0.7 s
Main-thread work timing can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
Category Time Spent (Ms)
Script Evaluation
269.033
Other
170.455
Style & Layout
161.093
Rendering
66
Parse HTML & CSS
48.858
Script Parsing & Compilation
27.891
All text remains visible during webfont loads
Make use of the font-display CSS feature, which will ensure text is user-visible while webfonts are loading.
Keep request counts low and transfer sizes small — 54 requests • 1,128 KiB
It is advised to add a budgets.json file in order to set budgets for the quantity and size of page resources.
Resource Type Requests Transfer Size (Bytes)
Total
54
1154884
Image
27
490840
Script
13
288641
Font
5
210372
Document
1
87447
Stylesheet
3
73708
Other
5
3876
Media
0
0
Third-party
3
50781
Minimize third-party usage — Third-party code blocked the main thread for 0 ms
It is advised to either limit, remove or delay the loading of redundant third-party code which may be significantly impacting load performance.
Third-Party Transfer Size (Bytes) Main-Thread Blocking Time (Ms)
50781
0
Lazy load third-party resources with facades
Consider replacing third-party embeds with a facade until they are required (use lazy loading).
Largest Contentful Paint element — 1 element found
The element which was identified as the Largest Contentful Paint.
Element
Largest Contentful Paint image was not lazily loaded
Above-the-fold images that are lazily loaded render later in the page lifecycle, which can delay the largest contentful paint.
Element
Uses passive listeners to improve scrolling performance
Improve the page's scroll performance by marking touch and wheel event listeners as 'passive'.
Avoids `document.write()`
Avoid or limit the use of external scripts that are dynamically injected via 'document.write()' as users on slow connections will be delayed by tens of seconds.
Avoid long main-thread tasks
Below is a list of the longest tasks on the main thread, which is useful when identifying the worst input delay contributors.
Avoid non-composited animations
It is recommended to avoid non-composited animations which are often janky and increase CLS.
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of bol.com on mobile screens.

Budgets

Performance budget
It is advised to keep the quantity and size of all network requests under the targets set by the provided performance budget.
Timing budget
It is advised to set a timing budget to monitor the performance of your site.

Metrics

Speed Index — 1.5 s
The time taken for the page contents to be visibly populated.
Largest Contentful Paint — 1.3 s
The timing of the largest text or image that is painted.

Other

Reduce initial server response time — Root document took 960 ms
It is advised to keep the server response time short for the main document, because all other requests depend on it.
URL Time Spent (Ms)
https://www.bol.com/nl/nl/
959.296
Avoid an excessive DOM size — 1,615 elements
A large DOM (Document Object Model) will increase memory usage, cause longer system calculations as well as costly layout reflows.
Statistic Element Value
Total DOM Elements
1615
Maximum DOM Depth
18
Maximum Child Elements
28
Image elements do not have explicit `width` and `height`
Reduce layout shifts and improve CLS by setting explicit width and height properties on image elements.
URL
https://s.s-bol.com/nl/upload/images/ps/banners/campagne/2022/wonen/Middelen/31561-2022_Q1_Wonen-OOH_1_hoofdmiddelen_mhp-header.jpg
Registers an `unload` listener
The 'unload' event does not fire reliably, causing issues with browser optimizations such as the Back-Forward Cache. It is recommended that 'pagehide' or 'visibilitychange' events are used instead.
Source
94

Accessibility

Indicates how accessible the page is and highlights opportunities where the page can be made more accessible to users of bol.com. This includes details about various page attributes that can be optimized.

Navigation

`[accesskey]` values are unique
Access keys assist users with focusing on different parts of the page. Each access key should be unique for proper navigation.
The page contains a heading, skip link, or landmark region
It is advised to provide ways to bypass repetitive content, allowing users to navigate the page efficiently.
`[id]` attributes on active, focusable elements are unique
Ensure all focusable elements have a unique id value to allow them to be visible to users of assistive technologies, like a screen reader.
Heading elements appear in a sequentially-descending order
Properly order all headers and do not skip heading levels to better the navigation and readability for users of assistive technologies, like a screen reader.
No element has a `[tabindex]` value greater than 0
Although technically valid, a tabindex value greater than 0 often creates frustrating experiences for users who rely on assistive technologies.

ARIA

`[aria-*]` attributes match their roles
Avoid mismatching 'aria-*' attributes and their 'role' value, as it invalidates the attribute.
`button`, `link`, and `menuitem` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[aria-hidden="true"]` is not present on the document `<body>`
If aria-hidden=true is set on the document body, assistive technologies, like a screen reader will work inconsistently.
`[aria-hidden="true"]` elements do not contain focusable descendents
Interactive elements within an aria-hidden=true element are unavailable to users of assistive technologies, like a screen reader.
ARIA input fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when an input field does not have an accessible name specified.
ARIA `meter` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
ARIA `progressbar` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[role]`s have all required `[aria-*]` attributes
Some ARIA roles have required 'aria-*' attributes, which provide essential information about state and functionality.
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
Some ARIA parent roles cannot perform their intended functions if specific child roles are not used.
`[role]`s are contained by their required parent element
Some ARIA child roles cannot perform their intended functions if specific parent roles are not used.
`[role]` values are valid
All ARIA roles require valid values to perform their intended functions.
ARIA toggle fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when a toggle field does not have an accessible name specified.
ARIA `tooltip` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
ARIA `treeitem` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[aria-*]` attributes have valid values
ARIA attributes cannot be interpreted with invalid values when used by screen readers and other assistive technologies.
`[aria-*]` attributes are valid and not misspelled
ARIA attributes cannot be interpreted with invalid names when used by screen readers and other assistive technologies.
ARIA IDs are unique
Ensure all ARIA ID values are unique to prevent elements from being overlooked by assistive technologies, like a screen reader.

Names and labels

Buttons have an accessible name
Buttons become unusable as they are announced simply as "button" when the button does not have an accessible name, when used by screen readers and other assistive technologies.
Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
No form fields have multiple labels
Having multiple labels for form fields can be confusing to assistive technologies, like a screen reader.
`<frame>` or `<iframe>` elements have a title
Screen reader users and other assistive technology users rely on frame titles to describe the contents of frames.
Image elements have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
`<input type="image">` elements have `[alt]` text
Input buttons with alternative text assist screen readers and other assistive technology users to understand its purpose.
Form elements have associated labels
Screen readers and other assistive technologies rely on labels to properly announce form controls.
`<object>` elements have alternate text
It is advised that alt text is used on '<object>' elements in order to provide meaning to screen reader and other assistive technology users, as these technologies are unable to translate non-text content.

Tables and lists

`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Screen readers and other assistive technologies may produce poor and inaccurate output when definition lists are not properly marked up.
Definition list items are wrapped in `<dl>` elements
In order for screen readers and other assistive technologies to properly announce definition list items ('<dt>' and '<dd>'), they must be wrapped in parent a '<dl>' element.
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
In order for screen readers to announce list items, ensure that list items ('<li>') are contained within parent '<ul>' or '<ol>' tags.
Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that '<td>' cells using the headers attribute only refer to other cells in the same table, to improve screen reader user experience.
`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that table headers refer to some set of cells, to improve screen reader user experience.

Internationalization and localization

`<html>` element has a `[lang]` attribute
It is advised to provide a lang attribute so that screen readers and other assistive technologies are guaranteed to announce the page's text correctly. When not provided, the user's default language setting will be used which may cause inaccuracies.
`<html>` element has a valid value for its `[lang]` attribute
Specify a valid BCP 47 language in order to help screen readers and other assistive technologies announce text properly.
`[lang]` attributes have a valid value
Specify a valid BCP 47 language on elements in order to help screen readers and other assistive technologies announce text properly.

Best practices

The document does not use `<meta http-equiv="refresh">`
Pages that refresh automatically cause a poor user experience as focus is directed back to the top of the page unexpectedly.
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
For users with low vision who rely on screen magnification, ensure that zooming is not disabled.

Audio and video

`<video>` elements contain a `<track>` element with `[kind="captions"]`
Bol.com may provide assistance to deaf or hearing-impaired users with captions on videos.

Contrast

Background and foreground colors do not have a sufficient contrast ratio.
Many (if not most) users find low-contrast text difficult or impossible to read.
Failing Elements

Names and labels

Links do not have a discernible name
In order to improve the navigation for screen reader and other assistive technology users, use link text that is unique, focusable and discernible.

Tables and lists

Lists do not contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
Use proper list structure to aid screen readers and other assistive technologies.
Failing Elements

Manual Checks

The page has a logical tab order
The visual layout should be logical in its tab order and users cannot focus elements that are offscreen.
Interactive controls are keyboard focusable
Ensure that custom interactive controls are keyboard focusable and that a focus indicator is displayed.
Interactive elements indicate their purpose and state
Ensure that interactive elements (such as links and buttons) are distinguishable from non-interactive elements and that they indicate their state.
The user's focus is directed to new content added to the page
When new content (such as a dialogue) is added to the page, the user's focus should be directed to it.
User focus is not accidentally trapped in a region
Avoid focus being accidentally trapped when a user tabs in and out of controls or regions on page.
Custom controls have associated labels
Ensure that custom interactive controls have associated labels, which are provided by aria-label and aria-labelledby attributes.
Custom controls have ARIA roles
Ensure that all custom interactive controls have appropriate ARIA roles.
Visual order on the page follows DOM order
Ensure that the DOM order matches with the page's visual order, in order to improve navigation for screen readers and other assistive technologies.
Offscreen content is hidden from assistive technology
Ensure that offscreen content is hidden through the use of "display:none" styling or the aria-hidden attribute.
HTML5 landmark elements are used to improve navigation
Elements such as <main> and <nav> are recommended as they are used by screen readers and other assistive technologies to improve keyboard navigation.
92

Best Practices

Indicates the recommended, best practices currently in place on the page and highlights the best practices that bol.com should incorporate. This includes practices such as protecting pages with HTTPS.

Audits

Avoids requesting the geolocation permission on page load
When requesting a user's location, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Avoids requesting the notification permission on page load
When requesting permission to send notifications, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Avoids front-end JavaScript libraries with known security vulnerabilities
Ensure that the use of third-party scripts is minimal and that only trusted third-party scripts are used as some may contain known security vulnerabilities which may be exploited by attackers.
Ensure CSP is effective against XSS attacks
Significantly reduce the risk of cross-site scripting attacks (XSS) by ensuring you have a strong Content Security Policy (CSP).
Description Directive Severity
Host allowlists can frequently be bypassed. Consider using CSP nonces or hashes instead, along with 'strict-dynamic' if necessary.
script-src
High
'unsafe-inline' allows the execution of unsafe in-page scripts and event handlers. Consider using CSP nonces or hashes to allow scripts individually.
script-src
High
Avoid using plain URL schemes (data:) in this directive. Plain URL schemes allow scripts to be sourced from an unsafe domain.
script-src
High

Audits

Allows users to paste into password fields
Ensure that password inputs may be pasted into to aid in the user's ability to use password managers and improve security.
Displays images with correct aspect ratio
Ensure that image display dimensions match their natural aspect ratio.
Serves images with appropriate resolution
For maximum image clarity, ensure images have natural dimensions and are proportional to the display size and pixel ratio.
Fonts with `font-display: optional` are preloaded
It is recommended that optional fonts are preloaded.

Audits

Page has the HTML doctype
Ensure a doctype is specified to prevent the browser from switching to quirks-mode.
Properly defines charset
It is advised to declare a character encoding, optionally via a <meta> tag in the first 1024 bytes of the HTML or in the Content-Type HTTP response header.

Audits

Detected JavaScript libraries
Below is a list of all front-end JavaScript libraries that were detected on the page.
Name Version
jQuery
3.5.1
Backbone
1.1.2
Underscore
1.13.0
boomerang.js
1.700.0
Avoids deprecated APIs
Avoid deprecated APIs which will eventually be removed the browser.
No browser errors logged to the console
Below is a list of all errors logged to the console, which indicate unresolved problems on the site.
Page has valid source maps
Consider deploying source maps for added benefits such as the ability to debug while in production.
No issues in the `Issues` panel in Chrome Devtools
There may be unresolved issues logged to Chrome Devtools.

Audits

Does not use HTTPS — 1 insecure request found
Ensure that all pages are protected with HTTPS (including those that do not handle sensitive data) as HTTPS prevents tampering and passive listening on communications between the app and its users. Additionally, HTTPS is a prerequisite for HTTP/2 and many new web platform APIs.
Insecure URL Request Resolution
http://bol.com/
Allowed
92

SEO

Indicates how well the page is optimized for ranking in search engines and highlights Search Engine Optimization (SEO) opportunities for bol.com. This includes optimizations such as providing meta data.

Mobile Friendly

Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of bol.com on mobile screens.
Document uses legible font sizes
Font sizes of 12px or less are too small to most mobile users without user gestures and further action. Aim for more than 60% of page text to use font sizes greater than 12px.
Tap targets are sized appropriately
Interactive elements (such as buttons and links) should be appropriately spaced, sized and easy enough to select or tap with regard to their surrounding elements.

Content Best Practices

Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
Document has a meta description
Meta descriptions may be used by search engines when displaying a link to the page and should concisely summarize the page's content.
Links have descriptive text
Make use of descriptive link text to assist search engines in understanding the content.
Image elements have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
Document has a valid `hreflang`
Search engines can be instructed to list specific versions of a page for a given language or region through the use of hreflang links.
Document has a valid `rel=canonical`
Search engines can be suggested which URL should be shown in search results through the use of canonical links.
Document avoids plugins
The content of plugins cannot be indexed by search engines and many devices either restrict or do not support them.

Crawling and Indexing

Page has successful HTTP status code
Avoid pages with unsuccessful HTTP status codes as they may not be indexed by search engines.
Page isn’t blocked from indexing
Pages that cannot be crawled by search engines cannot be indexed or included in their search results. Ensure that search engines have permission to crawl all pages that should be indexed.
robots.txt is valid
Malformed robots.txt files prevent crawlers from understanding how a site wants to be crawled or indexed, which can be devastating to SEO.

Crawling and Indexing

Links are not crawlable
Ensure that the 'href' attribute of anchor elements links to the appropriate destination. This allows for more pages of the site to be discovered by search engines.

Manual Checks

Structured data is valid
Structured data can be validated through the use of the Structured Data Testing Tool and the Structured Data Linter.
78

PWA

Indicates how valid the aspects of a Progressive Web App (PWA) are for the page and highlights opportunities to enable/improve the PWA of bol.com. This includes details about web app manifests.

Installable

Web app manifest and service worker meet the installability requirements
User engagement may be increased by leveraging the browsers ability to proactively prompt users to add the app to their homescreen.

PWA Optimized

Configured for a custom splash screen
Themed splash screens ensure a high-quality user experience at launch for app users.
View Data
Sets a theme color for the address bar.
A theme may be applied to the browser address bar, which ideally can be made to match the site.
View Data
Content is sized correctly for the viewport
Ensure that the width of the app's content matches the width of the viewport, otherwise the app might not be optimized for mobile screens.
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of bol.com on mobile screens.
Provides a valid `apple-touch-icon`
iOS users of Progressive Web Apps will benefit from an apple touch icon, which can be defined with 'apple-touch-icon', which must point to a non-transparent 192px (or 180px) square PNG.

PWA Optimized

Does not register a service worker that controls page and `start_url`
A service worker is used to provide Progressive Web Apps the use of features such as working offline, the ability for the app to be added to the homescreen as well as push notifications.
Manifest doesn't have a maskable icon
Maskable icons are great to ensure that images fill the entire shape when installing the app on a device.

Manual Checks

Site works cross-browser
Ensure that the Progressive Web App works correctly across every major browser.
Page transitions don't feel like they block on the network
Users perceive apps with responsive, snappy transitions as higher peforming and ensures a great user experience, even on a slow network.
Each page has a URL
Ensure that all pages are deep linkable via URL. They should also be unique for the purpose of shareability on social media.
Avg. (All Categories) 80
Performance 68
Accessibility 72
Best Practices 92
SEO 86
PWA 80
0–49 (Fail) 50–89 (Average) 90–100 (Pass)
URL: https://www.bol.com/nl/nl/
Updated: 9th April, 2022

0.95 seconds
First Contentful Paint (FCP)
94%
5%
1%

0.05 seconds
First Input Delay (FID)
87%
9%
4%

Simulate loading on mobile
68

Performance

Indicates how well the page is performing and highlights opportunities where performance may be improved for bol.com. This includes details about optimizing page load times which can result in a better user experience.

Metrics

Total Blocking Time — 20 ms
The total blocking time is the sum of all time periods between First Contentful Paint and Time to Interactive (when task length exceeded 50ms).

Audits

Max Potential First Input Delay — 60 ms
Users could experience a delay when interacting with the page.
Network Requests
Below is a list of network requests that were made during page load.
URL Protocol Start Time (Ms) End Time (Ms) Transfer Size (Bytes) Resource Size (Bytes) Status Code MIME Type Resource Type
http://bol.com/
http/1.1
0
181.43799999962
309
0
301
text/html
https://www.bol.com/nl/nl/
http/1.1
181.73499999102
1121.7179999803
84138
364150
200
text/html
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h2
1132.4119999772
1639.6439999808
71932
373140
200
text/css
Stylesheet
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http/1.1
1132.557999983
1847.2169999732
1047
1122
200
text/css
Stylesheet
https://assets.s-bol.com/nl/static/assets/js/common-vendor.852499c09ca3f452006c.bundle.js
h2
1132.7619999647
1141.2169999676
53916
168376
200
application/javascript
Script
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h2
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98434
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Script
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h2
1133.3159999922
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153056
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application/javascript
Script
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h2
1138.7269999832
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37524
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Font
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h2
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43841
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200
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Font
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h2
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41912
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Font
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h2
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15417
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200
application/javascript
Script
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h2
1159.0059999726
1165.8879999886
8656
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200
image/jpeg
Image
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h2
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8202
7417
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image/jpeg
Image
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h2
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Image
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h2
1160.0439999602
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6833
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200
image/jpeg
Image
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h2
1160.2059999714
1165.2589999721
4899
4109
200
image/jpeg
Image
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h2
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1168.612999958
6695
5905
200
image/jpeg
Image
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h2
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5280
4479
200
image/jpeg
Image
https://media.s-bol.com/qDr0AvqBmV2p/E8l2VLk/160x160.jpg
h2
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4946
4149
200
image/jpeg
Image
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h2
1161.5649999585
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6337
200
image/jpeg
Image
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h2
1161.6869999561
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4299
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image/jpeg
Image
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h2
1161.7799999658
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6658
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image/jpeg
Image
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h2
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8090
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200
image/jpeg
Image
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h2
1162.2849999694
1169.3300000043
7858
7073
200
image/jpeg
Image
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http/1.1
1162.7399999998
2052.2019999917
74912
74411
200
image/jpeg
Image
data
1177.8029999696
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0
43
200
image/gif
Image
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http/1.1
1194.1479999805
1998.5909999814
28182
27468
200
image/png
Image
data
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0
263
200
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Image
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h2
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Script
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h2
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Script
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h2
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Script
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http/1.1
1348.3830000041
1839.3429999705
6212
0
200
text/html
XHR
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http/1.1
1357.5919999857
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13579
13078
200
image/jpeg
Image
https://s.s-bol.com/nl/upload/images/visual-categories/3136.jpg
http/1.1
1357.9199999804
1877.146999992
8648
8148
200
image/jpeg
Image
https://s.s-bol.com/nl/upload/images/visual-categories/7934.jpg
http/1.1
1358.3029999863
2071.9110000064
9023
8523
200
image/jpeg
Image
https://assets.s-bol.com/nl/static/assets/images/sass/app-icons/iosapp@2x.png
h2
1674.7089999844
1680.4140000022
28339
27468
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image/png
Image
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h2
1685.91499998
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43924
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application/octet-stream
Font
https://assets.s-bol.com/nl/static/assets/webfonts/Produkt/Produkt-Light-Web.woff2
h2
1686.0929999966
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Font
data
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Image
data
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Image
data
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Image
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http/1.1
1854.8270000028
2552.2059999639
9286
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XHR
https://assets.s-bol.com/nl/static/assets/js/catalog.ab398c370742636c4356.bundle.js
h2
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h2
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Script
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h2
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Script
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h2
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Script
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http/1.1
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h2
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h2
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image/jpeg
Image
https://bltg.s-bol.com/v1/client-interaction
3611.0779999872
3614.7849999834
0
0
-1
Ping
Network Round Trip Times — 0 ms
High Network RTT (Round Trip Times) can have a large impact on performance. Providing servers geographically closer to the user could improve performance.
Server Backend Latencies — 0 ms
High server latencies indicate the server is overloaded or has a poor backend performance.
Tasks
Below is a list of the top-level main thread tasks that executed during page load.
Start Time (Ms) End Time (Ms)
1174.822
10.038
1192.204
13.082
1205.984
5.717
1220.42
6.561
1240.213
24.822
1265.737
6.558
1276.999
14.971
1297.076
10.968
1310.117
9.579
1319.755
6.528
1326.598
15.11
1341.723
10.688
1352.452
29.071
1386.26
5.357
1397.556
6.462
1690.231
14.091
1704.365
9.872
1714.253
81.277
1891.114
9.536
2126.37
7.045
2136.09
12.816
2162.973
6.1
2170.607
8.429
2603.634
25.966
2666.101
25.661
2949.569
5.151
Diagnostics
Below is a collection of useful page vitals.
View Data
Metrics
Below is a collection of metrics.
View Data
Script Treemap Data
Provide as required, for treemap app.

Other

Eliminate render-blocking resources
Resources, such as JavaScript and style sheets, can block the first paint of the page. Bol.com should consider delivering critical JavaScript/style sheets (JS/CSS) inline and deferring all non-critical JS/CSS.
Properly size images
Images can slow down the page's load time. Bol.com should consider serving more appropriate-sized images.
Minify CSS
Cascading Style Sheets (CSS) files can contribute to network payload sizes. Bol.com should consider minifying CSS files.
Minify JavaScript
JavaScript (JS) files can contribute to network payload sizes and increase script parse times. Bol.com should consider minifying JS files.
Efficiently encode images — Potential savings of 25 KiB
Unoptimized images can consume more cellular data than what is necessary.
URL Resource Size (Bytes) Potential Savings (Bytes)
https://s.s-bol.com/nl/upload/images/ps/banners/campagne/2022/wonen/Middelen/31561-2022_Q1_Wonen-OOH_1_hoofdmiddelen_mhp-header-mobiel.jpg
74411
25661
Enable text compression — Potential savings of 15 KiB
Text-based resources should be served with compression, such as gzip, deflate or brotli.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://firefly.bol.com/js/0.3.4/performance-metrics.js
20583
15507
Preconnect to required origins
Resource hints, such as 'preconnect' or 'dns-prefetch', may assist in establishing early connections to important third-party origins.
Avoid multiple page redirects — Potential savings of 630 ms
Redirects can cause additional delays before the page can begin loading. Bol.com should avoid multiple or unnecessary page redirects.
URL Time Spent (Ms)
http://bol.com/
630
https://www.bol.com/nl/nl/
0
Preload key requests
Key requests can be preloaded by using '<link rel=preload>'. Bol.com should consider using '<link rel=preload>' to prioritize fetching resources that are currently requested later in page load.
Use video formats for animated content
Large GIFs are inefficient for delivering animated content. It is recommended to use MPEG4/WebM videos for animations and PNG/WebP for static images instead of GIF.
Remove duplicate modules in JavaScript bundles
Ensure that no duplicate JavaScript modules from bundles exist to reduce bytes consumed by network activity.
Avoid serving legacy JavaScript to modern browsers — Potential savings of 5 KiB
Polyfills and transforms enable legacy browsers to use new JavaScript features. For bundled JavaScript it is recommended to adopt a modern script deployment strategy using module/nomodule feature detection. This will reduce the amount of code shipped to modern browsers.
URL Potential Savings (Bytes)
https://assets.s-bol.com/nl/static/assets/js/wsp-elements.fd63b187d23470aea1fb.bundle.js
5193
https://firefly.bol.com/js/0.3.4/performance-metrics.js
276
Preload Largest Contentful Paint image
It is recommended to preload images used by LCP elements, to improve LCP time.
Avoids enormous network payloads — Total size was 882 KiB
Large network payloads can cost users money and are linked to long load times.
URL Transfer Size (Bytes)
https://www.bol.com/nl/nl/
84138
https://s.s-bol.com/nl/upload/images/ps/banners/campagne/2022/wonen/Middelen/31561-2022_Q1_Wonen-OOH_1_hoofdmiddelen_mhp-header-mobiel.jpg
74912
https://assets.s-bol.com/nl/static/assets/css/wsp-catalog.min.52f5abcf7f73c9315b96.css
71932
https://assets.s-bol.com/nl/static/assets/js/common-vendor.852499c09ca3f452006c.bundle.js
53916
https://assets.s-bol.com/nl/static/assets/webfonts/Produkt/Produkt-Super-Web.woff2
43924
https://assets.s-bol.com/nl/static/assets/webfonts/Produkt/Produkt-Bold-Web.woff2
43841
https://assets.s-bol.com/nl/static/assets/webfonts/Produkt/Produkt-Light-Web.woff2
43177
https://assets.s-bol.com/nl/static/assets/webfonts/Graphik/Graphik-Semibold-Web.woff2
41912
https://assets.s-bol.com/nl/static/assets/js/wsp-elements.fd63b187d23470aea1fb.bundle.js
38288
https://assets.s-bol.com/nl/static/assets/webfonts/Graphik/Graphik-Regular-Web.woff2
37524
Uses efficient cache policy on static assets — 1 resource found
Bol.com can speed up repeat visits by increasing the cache lifetime, which is essentially how long before a cached copy expires.
URL Cache TTL (Ms) Transfer Size (Bytes)
https://www.bol.com/nl/static/assets/images/sass/app-icons/iosapp@2x.png
3456000000
28182
Avoid chaining critical requests — 1 chain found
Below is a list of Critical Request Chains, which shows which resources are loaded with a high priority. Bol.com should consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.
User Timing marks and measures — 3 user timings
Make use of the User Timing API to measure an app's real-world performance during key user experiences.
Name Type Start Time (Ms) Duration (Ms)
first_anim_frame
Mark
1192.986
doc_ready
Mark
1277.624
win_ready
Mark
2084.075
JavaScript execution time — 0.6 s
JavaScript (JS) execution time can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
URL Total CPU Time (Ms) Script Evaluation (Ms) Script Parse (Ms)
https://www.bol.com/nl/nl/
1205.744
183.516
18.972
https://assets.s-bol.com/nl/static/assets/js/wsp-elements.fd63b187d23470aea1fb.bundle.js
321.68
106
9.656
Unattributable
290.176
12.292
0.588
https://assets.s-bol.com/nl/static/assets/js/px.c566a2ada64ecb785bdb.bundle.js
170.904
120.364
7.452
https://assets.s-bol.com/nl/static/assets/js/common-own.1384618d7be9d9c6d0a3.bundle.js
64.964
56.088
6.472
https://assets.s-bol.com/nl/static/assets/js/common-vendor.852499c09ca3f452006c.bundle.js
63.84
44.424
10.324
https://assets.s-bol.com/nl/static/assets/css/wsp-catalog.min.52f5abcf7f73c9315b96.css
56.364
0
0
https://assets.s-bol.com/nl/static/assets/js/catalog.ab398c370742636c4356.bundle.js
52.056
41.684
5.348
All text remains visible during webfont loads
Make use of the font-display CSS feature, which will ensure text is user-visible while webfonts are loading.
Keep request counts low and transfer sizes small — 48 requests • 882 KiB
It is advised to add a budgets.json file in order to set budgets for the quantity and size of page resources.
Resource Type Requests Transfer Size (Bytes)
Total
48
903331
Image
23
278658
Script
12
239243
Font
5
210378
Document
1
84138
Stylesheet
2
72979
Other
5
17935
Media
0
0
Third-party
0
0
Minimize third-party usage
It is advised to either limit, remove or delay the loading of redundant third-party code which may be significantly impacting load performance.
Lazy load third-party resources with facades
Consider replacing third-party embeds with a facade until they are required (use lazy loading).
Largest Contentful Paint element — 1 element found
The element which was identified as the Largest Contentful Paint.
Element
Largest Contentful Paint image was not lazily loaded
Above-the-fold images that are lazily loaded render later in the page lifecycle, which can delay the largest contentful paint.
Avoid large layout shifts — 3 elements found
Below is a list of all DOM elements that contribute to the CLS of the page.
Element CLS Contribution
0.11339105344361
0.084272129806463
0.0060363936954074
Uses passive listeners to improve scrolling performance
Improve the page's scroll performance by marking touch and wheel event listeners as 'passive'.
Avoids `document.write()`
Avoid or limit the use of external scripts that are dynamically injected via 'document.write()' as users on slow connections will be delayed by tens of seconds.
Avoid long main-thread tasks — 9 long tasks found
Below is a list of the longest tasks on the main thread, which is useful when identifying the worst input delay contributors.
URL Start Time (Ms) Duration (Ms)
https://www.bol.com/nl/nl/
2560
163
https://www.bol.com/nl/nl/
2723
103
https://assets.s-bol.com/nl/static/assets/js/common-vendor.852499c09ca3f452006c.bundle.js
4410
60
https://assets.s-bol.com/nl/static/assets/js/wsp-elements.fd63b187d23470aea1fb.bundle.js
6810
58
https://assets.s-bol.com/nl/static/assets/css/wsp-catalog.min.52f5abcf7f73c9315b96.css
2504
56
https://www.bol.com/nl/nl/
2350
52
https://assets.s-bol.com/nl/static/assets/js/wsp-elements.fd63b187d23470aea1fb.bundle.js
8170
52
https://assets.s-bol.com/nl/static/assets/js/px.c566a2ada64ecb785bdb.bundle.js
7274
51
https://www.bol.com/nl/nl/
2402
50
Avoid non-composited animations
It is recommended to avoid non-composited animations which are often janky and increase CLS.
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of bol.com on mobile screens.

Budgets

Performance budget
It is advised to keep the quantity and size of all network requests under the targets set by the provided performance budget.
Timing budget
It is advised to set a timing budget to monitor the performance of your site.

Metrics

First Contentful Paint — 2.8 s
The time taken for the first image or text on the page to be rendered.
Time to Interactive — 6.8 s
The time taken for the page to become fully interactive.
Speed Index — 4.7 s
The time taken for the page contents to be visibly populated.
Largest Contentful Paint — 3.9 s
The timing of the largest text or image that is painted.

Audits

First Meaningful Paint — 2.8 s
The time taken for the primary content of the page to be rendered.

Other

Defer offscreen images — Potential savings of 103 KiB
Time to Interactive can be slowed down by resources on the page. Bol.com should consider lazy-loading offscreen and hidden images.
URL Resource Size (Bytes) Potential Savings (Bytes)
https://assets.s-bol.com/nl/static/assets/images/sass/app-icons/iosapp@2x.png
27468
27468
https://media.s-bol.com/Jl2gQN1Z61Ml/ANn2YEz/160x160.jpg
7869
7869
https://media.s-bol.com/Y0nA5gn9qXmA/K1O2Vln/160x160.jpg
7417
7417
https://media.s-bol.com/qDr0ZW8rGrpR/Mwj2Vn3/160x160.jpg
7315
7315
https://media.s-bol.com/3OpnyxX8yg84/vlgzp6r/160x160.jpg
7073
7073
https://media.s-bol.com/qDr0MxLoyZJ7/zvmEwg8/160x160.jpg
6658
6658
https://media.s-bol.com/qDr0ADLr5rP2/GvZ2VN0/160x160.jpg
6337
6337
https://media.s-bol.com/Jl2gE9mq6NJD/JyZ29ko/160x160.jpg
6040
6040
https://media.s-bol.com/Y0nA5XmJXWJM/D1R2VKn/160x160.jpg
5976
5976
https://media.s-bol.com/3OpnYljOmqq4/BNg2YGJ/160x160.jpg
5905
5905
https://media.s-bol.com/7YBK0VMNz1ZB/16w1kRP/160x160.jpg
4479
4479
https://media.s-bol.com/BQ2J8m1n4Qyk/L7g2Vm4/160x160.jpg
4299
4299
https://media.s-bol.com/qDr0AvqBmV2p/E8l2VLk/160x160.jpg
4149
4149
https://media.s-bol.com/g6GjnvQ133r3/wVjAq6w/160x160.jpg
4109
4109
Reduce unused CSS — Potential savings of 63 KiB
Dead and/or unused rules in Style Sheets (CSS) can contribute to network payload sizes. Bol.com should consider removing dead rules from style sheets and deferring the loading of CSS not used for above-the-fold content.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://assets.s-bol.com/nl/static/assets/css/wsp-catalog.min.52f5abcf7f73c9315b96.css
71932
64345
Reduce unused JavaScript — Potential savings of 82 KiB
It is advised to remove unused JavaScript in order to reduce bytes consumed by network activity.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://assets.s-bol.com/nl/static/assets/js/common-vendor.852499c09ca3f452006c.bundle.js
53916
33436
https://assets.s-bol.com/nl/static/assets/js/wsp-elements.fd63b187d23470aea1fb.bundle.js
38288
28477
https://assets.s-bol.com/nl/static/assets/js/common-own.1384618d7be9d9c6d0a3.bundle.js
26833
22281
Serve images in next-gen formats — Potential savings of 96 KiB
Consider JPEG 2000, JPEG XR or WebP image formats which provide better compression than PNG and JPEG.
URL Resource Size (Bytes) Potential Savings (Bytes)
https://s.s-bol.com/nl/upload/images/ps/banners/campagne/2022/wonen/Middelen/31561-2022_Q1_Wonen-OOH_1_hoofdmiddelen_mhp-header-mobiel.jpg
74411
50785.9
https://www.bol.com/nl/static/assets/images/sass/app-icons/iosapp@2x.png
27468
23610.05
https://assets.s-bol.com/nl/static/assets/images/sass/app-icons/iosapp@2x.png
27468
23610.05
Minimize main-thread work — 2.4 s
Main-thread work timing can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
Category Time Spent (Ms)
Script Evaluation
658.004
Other
642.536
Style & Layout
569.82
Rendering
260.628
Parse HTML & CSS
151.976
Script Parsing & Compilation
69.58

Metrics

Cumulative Layout Shift — 0.261
Cumulative Layout Shift is the measurement of visible elements collective movement within the viewport.
View Data

Other

Reduce initial server response time — Root document took 940 ms
It is advised to keep the server response time short for the main document, because all other requests depend on it.
URL Time Spent (Ms)
https://www.bol.com/nl/nl/
940.977
Avoid an excessive DOM size — 1,650 elements
A large DOM (Document Object Model) will increase memory usage, cause longer system calculations as well as costly layout reflows.
Statistic Element Value
Total DOM Elements
1650
Maximum DOM Depth
18
Maximum Child Elements
28
Image elements do not have explicit `width` and `height`
Reduce layout shifts and improve CLS by setting explicit width and height properties on image elements.
URL
https://s.s-bol.com/nl/upload/images/ps/banners/campagne/2022/wonen/Middelen/31561-2022_Q1_Wonen-OOH_1_hoofdmiddelen_mhp-header-mobiel.jpg
Registers an `unload` listener
The 'unload' event does not fire reliably, causing issues with browser optimizations such as the Back-Forward Cache. It is recommended that 'pagehide' or 'visibilitychange' events are used instead.
Source
First Contentful Paint (3G) — 5530 ms
The time taken for the first image or text on the page to be rendered while on a 3G network.
72

Accessibility

Indicates how accessible the page is and highlights opportunities where the page can be made more accessible to users of bol.com. This includes details about various page attributes that can be optimized.

Navigation

`[accesskey]` values are unique
Access keys assist users with focusing on different parts of the page. Each access key should be unique for proper navigation.
The page contains a heading, skip link, or landmark region
It is advised to provide ways to bypass repetitive content, allowing users to navigate the page efficiently.
`[id]` attributes on active, focusable elements are unique
Ensure all focusable elements have a unique id value to allow them to be visible to users of assistive technologies, like a screen reader.
Heading elements appear in a sequentially-descending order
Properly order all headers and do not skip heading levels to better the navigation and readability for users of assistive technologies, like a screen reader.
No element has a `[tabindex]` value greater than 0
Although technically valid, a tabindex value greater than 0 often creates frustrating experiences for users who rely on assistive technologies.

ARIA

`[aria-*]` attributes match their roles
Avoid mismatching 'aria-*' attributes and their 'role' value, as it invalidates the attribute.
`button`, `link`, and `menuitem` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[aria-hidden="true"]` is not present on the document `<body>`
If aria-hidden=true is set on the document body, assistive technologies, like a screen reader will work inconsistently.
`[aria-hidden="true"]` elements do not contain focusable descendents
Interactive elements within an aria-hidden=true element are unavailable to users of assistive technologies, like a screen reader.
ARIA input fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when an input field does not have an accessible name specified.
ARIA `meter` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
ARIA `progressbar` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[role]`s have all required `[aria-*]` attributes
Some ARIA roles have required 'aria-*' attributes, which provide essential information about state and functionality.
`[role]`s are contained by their required parent element
Some ARIA child roles cannot perform their intended functions if specific parent roles are not used.
`[role]` values are valid
All ARIA roles require valid values to perform their intended functions.
ARIA toggle fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when a toggle field does not have an accessible name specified.
ARIA `tooltip` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
ARIA `treeitem` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[aria-*]` attributes have valid values
ARIA attributes cannot be interpreted with invalid values when used by screen readers and other assistive technologies.
`[aria-*]` attributes are valid and not misspelled
ARIA attributes cannot be interpreted with invalid names when used by screen readers and other assistive technologies.
ARIA IDs are unique
Ensure all ARIA ID values are unique to prevent elements from being overlooked by assistive technologies, like a screen reader.

Tables and lists

`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Screen readers and other assistive technologies may produce poor and inaccurate output when definition lists are not properly marked up.
Definition list items are wrapped in `<dl>` elements
In order for screen readers and other assistive technologies to properly announce definition list items ('<dt>' and '<dd>'), they must be wrapped in parent a '<dl>' element.
Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that '<td>' cells using the headers attribute only refer to other cells in the same table, to improve screen reader user experience.
`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that table headers refer to some set of cells, to improve screen reader user experience.

Names and labels

Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
No form fields have multiple labels
Having multiple labels for form fields can be confusing to assistive technologies, like a screen reader.
`<frame>` or `<iframe>` elements have a title
Screen reader users and other assistive technology users rely on frame titles to describe the contents of frames.
`<input type="image">` elements have `[alt]` text
Input buttons with alternative text assist screen readers and other assistive technology users to understand its purpose.
Form elements have associated labels
Screen readers and other assistive technologies rely on labels to properly announce form controls.
`<object>` elements have alternate text
It is advised that alt text is used on '<object>' elements in order to provide meaning to screen reader and other assistive technology users, as these technologies are unable to translate non-text content.

Internationalization and localization

`<html>` element has a `[lang]` attribute
It is advised to provide a lang attribute so that screen readers and other assistive technologies are guaranteed to announce the page's text correctly. When not provided, the user's default language setting will be used which may cause inaccuracies.
`<html>` element has a valid value for its `[lang]` attribute
Specify a valid BCP 47 language in order to help screen readers and other assistive technologies announce text properly.
`[lang]` attributes have a valid value
Specify a valid BCP 47 language on elements in order to help screen readers and other assistive technologies announce text properly.

Best practices

The document does not use `<meta http-equiv="refresh">`
Pages that refresh automatically cause a poor user experience as focus is directed back to the top of the page unexpectedly.
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
For users with low vision who rely on screen magnification, ensure that zooming is not disabled.

Audio and video

`<video>` elements contain a `<track>` element with `[kind="captions"]`
Bol.com may provide assistance to deaf or hearing-impaired users with captions on videos.

ARIA

Elements with an ARIA `[role]` that require children to contain a specific `[role]` are missing some or all of those required children.
Some ARIA parent roles cannot perform their intended functions if specific child roles are not used.
Failing Elements

Names and labels

Image elements do not have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
Failing Elements

Contrast

Background and foreground colors do not have a sufficient contrast ratio.
Many (if not most) users find low-contrast text difficult or impossible to read.
Failing Elements

Tables and lists

Lists do not contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
Use proper list structure to aid screen readers and other assistive technologies.
Failing Elements

Manual Checks

The page has a logical tab order
The visual layout should be logical in its tab order and users cannot focus elements that are offscreen.
Interactive controls are keyboard focusable
Ensure that custom interactive controls are keyboard focusable and that a focus indicator is displayed.
Interactive elements indicate their purpose and state
Ensure that interactive elements (such as links and buttons) are distinguishable from non-interactive elements and that they indicate their state.
The user's focus is directed to new content added to the page
When new content (such as a dialogue) is added to the page, the user's focus should be directed to it.
User focus is not accidentally trapped in a region
Avoid focus being accidentally trapped when a user tabs in and out of controls or regions on page.
Custom controls have associated labels
Ensure that custom interactive controls have associated labels, which are provided by aria-label and aria-labelledby attributes.
Custom controls have ARIA roles
Ensure that all custom interactive controls have appropriate ARIA roles.
Visual order on the page follows DOM order
Ensure that the DOM order matches with the page's visual order, in order to improve navigation for screen readers and other assistive technologies.
Offscreen content is hidden from assistive technology
Ensure that offscreen content is hidden through the use of "display:none" styling or the aria-hidden attribute.
HTML5 landmark elements are used to improve navigation
Elements such as <main> and <nav> are recommended as they are used by screen readers and other assistive technologies to improve keyboard navigation.
92

Best Practices

Indicates the recommended, best practices currently in place on the page and highlights the best practices that bol.com should incorporate. This includes practices such as protecting pages with HTTPS.

Audits

Avoids requesting the geolocation permission on page load
When requesting a user's location, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Avoids requesting the notification permission on page load
When requesting permission to send notifications, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Avoids front-end JavaScript libraries with known security vulnerabilities
Ensure that the use of third-party scripts is minimal and that only trusted third-party scripts are used as some may contain known security vulnerabilities which may be exploited by attackers.
Ensure CSP is effective against XSS attacks
Significantly reduce the risk of cross-site scripting attacks (XSS) by ensuring you have a strong Content Security Policy (CSP).
Description Directive Severity
Host allowlists can frequently be bypassed. Consider using CSP nonces or hashes instead, along with 'strict-dynamic' if necessary.
script-src
High
'unsafe-inline' allows the execution of unsafe in-page scripts and event handlers. Consider using CSP nonces or hashes to allow scripts individually.
script-src
High
Avoid using plain URL schemes (data:) in this directive. Plain URL schemes allow scripts to be sourced from an unsafe domain.
script-src
High

Audits

Allows users to paste into password fields
Ensure that password inputs may be pasted into to aid in the user's ability to use password managers and improve security.
Displays images with correct aspect ratio
Ensure that image display dimensions match their natural aspect ratio.
Serves images with appropriate resolution
For maximum image clarity, ensure images have natural dimensions and are proportional to the display size and pixel ratio.
Fonts with `font-display: optional` are preloaded
It is recommended that optional fonts are preloaded.

Audits

Page has the HTML doctype
Ensure a doctype is specified to prevent the browser from switching to quirks-mode.
Properly defines charset
It is advised to declare a character encoding, optionally via a <meta> tag in the first 1024 bytes of the HTML or in the Content-Type HTTP response header.

Audits

Detected JavaScript libraries
Below is a list of all front-end JavaScript libraries that were detected on the page.
Name Version
jQuery
3.5.1
Backbone
1.1.2
Underscore
1.13.0
Avoids deprecated APIs
Avoid deprecated APIs which will eventually be removed the browser.
No browser errors logged to the console
Below is a list of all errors logged to the console, which indicate unresolved problems on the site.
Page has valid source maps
Consider deploying source maps for added benefits such as the ability to debug while in production.
No issues in the `Issues` panel in Chrome Devtools
There may be unresolved issues logged to Chrome Devtools.

Audits

Does not use HTTPS — 1 insecure request found
Ensure that all pages are protected with HTTPS (including those that do not handle sensitive data) as HTTPS prevents tampering and passive listening on communications between the app and its users. Additionally, HTTPS is a prerequisite for HTTP/2 and many new web platform APIs.
Insecure URL Request Resolution
http://bol.com/
Allowed
86

SEO

Indicates how well the page is optimized for ranking in search engines and highlights Search Engine Optimization (SEO) opportunities for bol.com. This includes optimizations such as providing meta data.

Mobile Friendly

Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of bol.com on mobile screens.
Document uses legible font sizes — 98.26% legible text
Font sizes of 12px or less are too small to most mobile users without user gestures and further action. Aim for more than 60% of page text to use font sizes greater than 12px.
Source Selector % of Page Text Font Size
.wsp-footer__btw
1.65%
10px
.flexbanner__extra
0.09%
10px
98.26%
≥ 12px
Tap targets are sized appropriately — 100% appropriately sized tap targets
Interactive elements (such as buttons and links) should be appropriately spaced, sized and easy enough to select or tap with regard to their surrounding elements.

Content Best Practices

Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
Document has a meta description
Meta descriptions may be used by search engines when displaying a link to the page and should concisely summarize the page's content.
Links have descriptive text
Make use of descriptive link text to assist search engines in understanding the content.
Document has a valid `hreflang`
Search engines can be instructed to list specific versions of a page for a given language or region through the use of hreflang links.
Document has a valid `rel=canonical`
Search engines can be suggested which URL should be shown in search results through the use of canonical links.
Document avoids plugins
The content of plugins cannot be indexed by search engines and many devices either restrict or do not support them.

Crawling and Indexing

Page has successful HTTP status code
Avoid pages with unsuccessful HTTP status codes as they may not be indexed by search engines.
Page isn’t blocked from indexing
Pages that cannot be crawled by search engines cannot be indexed or included in their search results. Ensure that search engines have permission to crawl all pages that should be indexed.
robots.txt is valid
Malformed robots.txt files prevent crawlers from understanding how a site wants to be crawled or indexed, which can be devastating to SEO.

Crawling and Indexing

Links are not crawlable
Ensure that the 'href' attribute of anchor elements links to the appropriate destination. This allows for more pages of the site to be discovered by search engines.

Content Best Practices

Image elements do not have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
Failing Elements

Manual Checks

Structured data is valid
Structured data can be validated through the use of the Structured Data Testing Tool and the Structured Data Linter.
80

PWA

Indicates how valid the aspects of a Progressive Web App (PWA) are for the page and highlights opportunities to enable/improve the PWA of bol.com. This includes details about web app manifests.

Installable

Web app manifest and service worker meet the installability requirements
User engagement may be increased by leveraging the browsers ability to proactively prompt users to add the app to their homescreen.

PWA Optimized

Configured for a custom splash screen
Themed splash screens ensure a high-quality user experience at launch for app users.
View Data
Sets a theme color for the address bar.
A theme may be applied to the browser address bar, which ideally can be made to match the site.
View Data
Content is sized correctly for the viewport
Ensure that the width of the app's content matches the width of the viewport, otherwise the app might not be optimized for mobile screens.
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of bol.com on mobile screens.
Provides a valid `apple-touch-icon`
iOS users of Progressive Web Apps will benefit from an apple touch icon, which can be defined with 'apple-touch-icon', which must point to a non-transparent 192px (or 180px) square PNG.

PWA Optimized

Does not register a service worker that controls page and `start_url`
A service worker is used to provide Progressive Web Apps the use of features such as working offline, the ability for the app to be added to the homescreen as well as push notifications.
Manifest doesn't have a maskable icon
Maskable icons are great to ensure that images fill the entire shape when installing the app on a device.

Manual Checks

Site works cross-browser
Ensure that the Progressive Web App works correctly across every major browser.
Page transitions don't feel like they block on the network
Users perceive apps with responsive, snappy transitions as higher peforming and ensures a great user experience, even on a slow network.
Each page has a URL
Ensure that all pages are deep linkable via URL. They should also be unique for the purpose of shareability on social media.
Hosting

Server Location

Server IP Address: 185.14.169.113
Continent: Europe
Country: Netherlands
Netherlands Flag
Region: Provincie Utrecht
City: Utrecht
Longitude: 5.0769
Latitude: 52.0706
Currencies: EUR
Languages: Dutch

Web Hosting Provider

Name IP Address
Bol.com hosting pool 2
Registration

Domain Registrant

Private Registration: No
Name: Domain Manager
Organization: bol.com b.v.
Country: NL
City: Utrecht
State:
Post Code: 3528 BJ
Email: hostmaster@bol.com
Phone: +31.306008888
Note: Registration information is derived from various sources and may be inaccurate.

Domain Registrar

Name IP Address
Nom-iq Ltd. dba COM LAUDE 94.199.146.95
Security

Visitor Safety

Mature Content: Not Likely
McAfee WebAdvisor Rating: Safe
WOT Rating:
WOT Trustworthiness: 92/100
WOT Child Safety: 92/100
Note: Safety information is not guaranteed.

SSL/TLS Certificate

Issued To: *.bol.com
Issued By: Trust Provider B.V. TLS RSA CA G1
Valid From: 28th October, 2021
Valid To: 28th November, 2022
Subject: CN = *.bol.com
Hash: 6949e9c9
Issuer: CN = Trust Provider B.V. TLS RSA CA G1
OU = Domain Validated SSL
O = Trust Provider B.V.
S = NL
Version: 2
Serial Number: 9293796712730377251231555232494401505
Serial Number (Hex): 06FDEB8E3433A0E0F2AD462F256237E1
Valid From: 28th October, 2024
Valid To: 28th November, 2024
Signature Algorithm (Short Name): RSA-SHA256
Signature Algorithm (Long Name): sha256WithRSAEncryption
Authority Key Identifier: keyid:F5:56:22:1F:D9:BF:6B:59:24:52:B0:E1:6A:CD:C0:E1:57:67:E9:E8
Extended Key Usage: TLS Web Server Authentication, TLS Web Client Authentication
CRL Distribution Points:
Full Name:
URI:http://cdpd.digitalcertvalidation.com/TrustProviderBVTLSRSACAG1.crl

Certificate Policies: Policy: 2.23.140.1.2.1
CPS: http://www.digicert.com/CPS

Authority Information Access: OCSP - URI:http://statusd.digitalcertvalidation.com
CA Issuers - URI:http://cacerts.digitalcertvalidation.com/TrustProviderBVTLSRSACAG1.crt

SCT List: Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : 29:79:BE:F0:9E:39:39:21:F0:56:73:9F:63:A5:77:E5:
BE:57:7D:9C:60:0A:F8:F9:4D:5D:26:5C:25:5D:C7:84
Timestamp : Oct 28 07:30:06.474 2021 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:45:02:21:00:C4:8A:A9:F3:54:87:8C:33:77:66:44:
F1:82:9F:5B:22:37:B8:18:C1:D8:AC:62:9A:9B:D0:17:
2E:5B:25:9E:72:02:20:26:76:FE:7E:7F:69:64:86:75:
93:8A:F1:E8:86:C7:86:ED:43:35:FB:D4:A9:56:F1:03:
05:55:D6:FC:48:B9:B1
Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : 51:A3:B0:F5:FD:01:79:9C:56:6D:B8:37:78:8F:0C:A4:
7A:CC:1B:27:CB:F7:9E:88:42:9A:0D:FE:D4:8B:05:E5
Timestamp : Oct 28 07:30:06.566 2021 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:45:02:21:00:F3:75:53:6D:60:82:F2:C8:FF:61:9F:
D8:95:E1:97:77:38:CF:4A:06:48:46:09:24:0A:E2:A3:
E5:2E:1E:55:37:02:20:30:78:D9:04:88:65:41:D3:D1:
32:72:8C:E0:F4:62:E4:04:4C:98:4A:2D:56:CE:1C:B1:
32:A7:51:60:B0:92:18
Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : 41:C8:CA:B1:DF:22:46:4A:10:C6:A1:3A:09:42:87:5E:
4E:31:8B:1B:03:EB:EB:4B:C7:68:F0:90:62:96:06:F6
Timestamp : Oct 28 07:30:06.460 2021 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:45:02:21:00:BA:FA:DD:66:F5:1C:E0:70:3C:AB:65:
26:97:F5:75:C0:A3:4B:78:F0:E2:E3:47:AD:2A:C6:0D:
5D:31:15:69:97:02:20:22:40:38:7D:47:5A:9A:5A:13:
A1:A2:94:D8:52:F4:C2:A3:E0:02:53:3D:6D:E6:1A:91:
81:12:A0:E4:F1:C5:D8
Key Usage: Digital Signature, Key Encipherment
Basic Constraints: CA:FALSE
Subject Alternative Name: DNS:bol.com
DNS:*.bol.com
Technical

DNS Lookup

A Records

Host IP Address Class TTL
bol.com. 185.14.169.113 IN 7200

NS Records

Host Nameserver Class TTL
bol.com. ns-cloud-c1.googledomains.com. IN 21600
bol.com. ns-cloud-c3.googledomains.com. IN 21600
bol.com. ns-cloud-c2.googledomains.com. IN 21600
bol.com. ns-cloud-c4.googledomains.com. IN 21600

CAA Records

Domain Flags Tag Class TTL
mailto:abuse@bol.com 0 iodef IN 7200
globalsign.com 0 issue IN 7200
letsencrypt.org 0 issue IN 7200
thawte.com 0 issue IN 7200
amazonaws.com 0 issue IN 7200
digicert.com 0 issue IN 7200
geotrust.com 0 issue IN 7200
awstrust.com 0 issue IN 7200

MX Records

Priority Host Server Class TTL
10 bol.com. pro-mail-mx-003.bol.com. IN 7200
10 bol.com. pro-mail-mx-004.bol.com. IN 7200

SOA Records

Domain Name Primary NS Responsible Email TTL
bol.com. ns-cloud-c1.googledomains.com. cloud-dns-hostmaster.google.com. 21600

TXT Records

Host Value Class TTL
bol.com. adobe-idp-site-verification=37d9adcf-fdfe-4135-9ba7-f4c4851881be IN 7200
bol.com. yI4CjFremeRILZz0hq69qQ+Peif++nUh+rUcU+2rI5whLjvSEBwa0uVrIXHve5DaiZNR4IJCmg9HoOaL8G7vEQ== IN 7200
bol.com. docusign=ba572dac-d5db-430f-9c34-21a6192693e5 IN 7200
bol.com. docusign=2391f023-cb58-4367-9285-9168007b3348 IN 7200
bol.com. docker-verification=c1a61b3c-598f-47b0-824d-f8fc46de1814 IN 7200
bol.com. dropbox-domain-verification=mrq43csxwfv7 IN 7200
bol.com. MS=ms69858635 IN 7200
bol.com. google-site-verification=b29v9e4M_R0JbhbWF3Z1OKCJyKyFG2WWznLBZstmc0o IN 7200
bol.com. google-site-verification=weUk-X03vju7fHFVPKkmd41QTZ9WTZufRMp_0Hc3_no IN 7200
bol.com. apple-domain-verification=2hTppDkURROP8SgX IN 7200
bol.com. docusign=837af1f7-16f8-4082-af71-e3e93aaf3e83 IN 7200
bol.com. teamviewer-sso-verification=8f82ce6dec464d6a919cd91b44522ffb IN 7200
bol.com. google-site-verification=HPcKu0g7W4T--dUqF8YLAdbs9aMxVZEqr9iRPqF1VxQ IN 7200
bol.com. facebook-domain-verification=tizfmjk9p1z8o476jg4yyluaaxi4hi IN 7200
bol.com. v=spf1 IN 7200

HTTP Response Headers

HTTP-Code: HTTP/1.1 200 200
Date: 9th April, 2022
Server: Apache
Content-Type: text/html;charset=UTF-8
Strict-Transport-Security: max-age=31536000
X-Content-Type-Options: nosniff
X-Frame-Options: SAMEORIGIN
X-XSS-Protection: 1; mode=block
X-PS: wspc13
Link: <//assets.s-bol.com/nl/static/assets/css/wsp-catalog.min.52f5abcf7f73c9315b96.css>; rel=preload; as=style,<//css.s-bol.com/nl/cms/css/emergency-override.css?202204091015>; rel=preload; as=style,<//assets.s-bol.com/nl/static/assets/js/common-vendor.852499c09ca3f452006c.bundle.js>; rel=preload; as=script; crossorigin=anonymous; integrity=sha512-DUYDifQSmQ8lz79GP9YdLnKOIU6zKPeb7OFGtHO+IlFAc98e55AKT9FMWRWmxNZeRwdrTIL6nA18/AvDqoqdng==,<//assets.s-bol.com/nl/static/assets/js/common-own.1384618d7be9d9c6d0a3.bundle.js>; rel=preload; as=script; crossorigin=anonymous; integrity=sha512-nPnzXGYjrLAWh/jdME3/rFFye0jEmx9wuAz90mL4V262L37TeM4Rd46LzFaS3kIeRFvIEdOOaRR8JzMmz+WSiQ==,<//assets.s-bol.com/nl/static/assets/js/wsp-elements.fd63b187d23470aea1fb.bundle.js>; rel=preload; as=script; crossorigin=anonymous; integrity=sha512-9praPXcSve/ULe82pEcTbLUtQVNiHWoAjyFEgOy9jJapLAHSQsMK8+pFRoLPm5BVqpVxKW7P1C4rSaMVSXcm+g==,<//s.s-bol.com>; rel=preconnect,<//assets.s-bol.com>; rel=preconnect
Content-Language: nl-NL
Vary: Accept-Encoding,User-Agent
X-UA-Compatible: IE=edge
Set-Cookie: *
Content-Security-Policy: report-uri https://cspreport.bol.com/report/b/14718 ; default-src https://tpc.googlesyndication.com https://www.bol.com ; connect-src https://*.adyen.com https://*.akstat.io https://*.doubleclick.net https://*.google-analytics.com https://*.google.com https://*.googlesyndication.com https://*.gstatic.com https://*.mpstat.us https://*.s-bol.com https://aai.bol.com https://api.bol.com https://c.go-mpulse.net https://chat1.bol.com https://chatr.bol.com https://fbstatic-a.akamaihd.net https://firefly.bol.com https://suggestions.bol.com https://www.bol.com ; font-src data

Whois Lookup

Created: 19th December, 1997
Changed: 2nd December, 2021
Expires: 18th December, 2022
Registrar: NOM-IQ Ltd dba Com Laude
Status: clientDeleteProhibited
clientTransferProhibited
clientUpdateProhibited
Nameservers: ns-cloud-c1.googledomains.com
ns-cloud-c2.googledomains.com
ns-cloud-c3.googledomains.com
ns-cloud-c4.googledomains.com
Owner Name: Domain Manager
Owner Organization: bol.com b.v.
Owner Street: Papendorpseweg 100
Owner Post Code: 3528 BJ
Owner City: Utrecht
Owner Country: NL
Owner Phone: +31.306008888
Owner Email: hostmaster@bol.com
Admin Name: Domain Manager
Admin Organization: bol.com b.v.
Admin Street: Papendorpseweg 100
Admin Post Code: 3528 BJ
Admin City: Utrecht
Admin Country: NL
Admin Phone: +31.306008888
Admin Email: hostmaster@bol.com
Tech Name: IT-Operations
Tech Organization: bol.com b.v.
Tech Street: Papendorpseweg 100
Tech Post Code: 3528 BJ
Tech City: Utrecht
Tech Country: NL
Tech Phone: +31.306008888
Tech Email: hostmaster@bol.com
Full Whois: Domain Name: bol.com
Registry Domain ID: 1990760_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.comlaude.com
Registrar URL: https://www.comlaude.com
Updated Date: 2021-12-02T12:06:49Z
Creation Date: 1997-12-19T05:00:00Z
Registrar Registration Expiration Date: 2022-12-18T00:00:00Z
Registrar: NOM-IQ Ltd dba Com Laude
Registrar IANA ID: 470
Domain Status: clientDeleteProhibited https://www.icann.org/epp#clientDeleteProhibited
Domain Status: clientTransferProhibited https://www.icann.org/epp#clientTransferProhibited
Domain Status: clientUpdateProhibited https://www.icann.org/epp#clientUpdateProhibited
Registry Registrant ID:
Registrant Name: Domain Manager
Registrant Organization: bol.com b.v.
Registrant Street: Papendorpseweg 100
Registrant City: Utrecht
Registrant State/Province:
Registrant Postal Code: 3528 BJ
Registrant Country: NL
Registrant Phone: +31.306008888
Registrant Phone Ext:
Registrant Fax: +31.306008870
Registrant Fax Ext:
Registrant Email: hostmaster@bol.com
Registry Admin ID:
Admin Name: Domain Manager
Admin Organization: bol.com b.v.
Admin Street: Papendorpseweg 100
Admin City: Utrecht
Admin State/Province:
Admin Postal Code: 3528 BJ
Admin Country: NL
Admin Phone: +31.306008888
Admin Phone Ext:
Admin Fax: +31.306008870
Admin Fax Ext:
Admin Email: hostmaster@bol.com
Registry Tech ID:
Tech Name: IT-Operations
Tech Organization: bol.com b.v.
Tech Street: Papendorpseweg 100
Tech City: Utrecht
Tech State/Province:
Tech Postal Code: 3528 BJ
Tech Country: NL
Tech Phone: +31.306008888
Tech Phone Ext:
Tech Fax: +31.306008870
Tech Fax Ext:
Tech Email: hostmaster@bol.com
Name Server: ns-cloud-c1.googledomains.com
Name Server: ns-cloud-c2.googledomains.com
Name Server: ns-cloud-c3.googledomains.com
Name Server: ns-cloud-c4.googledomains.com
DNSSEC: Signed Delegation
Registrar Abuse Contact Email: abuse@comlaude.com
Registrar Abuse Contact Phone: +44.2074218250
URL of the ICANN WHOIS Data Problem Reporting System: http://wdprs.internic.net/
>>> Last update of WHOIS database: 2022-04-09T07:10:11Z <<<

For more information on Whois status codes, please visit https://www.icann.org/resources/pages/epp-status-codes-2014-06-16-en

Please query the RDDS service of the Registrar of Record identified in this
output for information on how to contact the Registrant, Admin, or Tech contact
of the queried domain name.

-------------------------------------------------------------------------------
Com Laude registers, maintains and renews domain names around the world for
leading intellectual property owners and the law firms that support them.
If you have queries about this domain, you may contact us via our website
at www.comlaude.com.
-------------------------------------------------------------------------------

The data in the Com Laude Whois database is provided to assist you in obtaining
information about a domain name registration record. Com Laude makes this
information available "as is," and does not guarantee its accuracy.
By submitting a WHOIS query, you agree that you will use this data only for
lawful purposes and that, under no circumstances will you use this data to:

(1) allow, enable, or otherwise support the transmission of mass unsolicited,
commercial advertising or solicitations via e-mail (spam), telephone or fax; or
(2) enable high volume, automated, electronic processes that that send queries
or data to Com Laude or the systems of any Registry Operator or ICANN-Accredited
registrar. The compilation, repackaging, dissemination or other use of this
data is expressly prohibited without the prior written consent of Com Laude.

Com Laude reserves the right to modify these terms at any time. By submitting
this query, you agree to abide by these terms. If you fail to abide by this
policy, we may terminate your access to this WHOIS database.

-------------------------------------------------------------------------------
Com Laude protects intellectual property in the domain name system. Com Laude
only registers domain names for legitimate rights owners. Should you have any
queries about the legitimacy of this name or our work as a UK based, ICANN
Accredited Registrar, contact us at:
Com Laude, 28-30 Little Russell Street, London WC1A 2HN, UK.
Com Laude is a business name of Nom IQ Ltd.
-------------------------------------------------------------------------------

Nameservers

Name IP Address
ns-cloud-c1.googledomains.com 216.239.32.108
ns-cloud-c2.googledomains.com 216.239.34.108
ns-cloud-c3.googledomains.com 216.239.36.108
ns-cloud-c4.googledomains.com 216.239.38.108
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Subdomains

Domain Subdomain
developers
weblog

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