Tools & Wizards About Us
wibnet.nl screenshot

Report Summary

  • 14

    Performance

    Renders faster than
    26% of other websites

  • 81

    Accessibility

    Visual factors better than
    that of 52% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 93

    SEO

    Google-friendlier than
    84% of websites

wibnet.nl

Wetenschap in Beeld – ontdek de wereld van de wetenschap | wibnet.nl

Page Load Speed

4.7 sec in total

First Response

412 ms

Resources Loaded

3.2 sec

Page Rendered

1.1 sec

wibnet.nl screenshot

About Website

Visit wibnet.nl now to see the best up-to-date Wibnet content for Netherlands and also check out these interesting facts you probably never knew about wibnet.nl

Wetenschap in Beeld is een internationaal populairwetenschappelijk tijdschrift, dat de lezer inzicht geeft in het wereldwijde toonaangevende onderzoek in alle takken van wetenschap.

Visit wibnet.nl

Key Findings

We analyzed Wibnet.nl page load time and found that the first response time was 412 ms and then it took 4.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

wibnet.nl performance score

14

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value9.2 s

0/100

10%

LCP (Largest Contentful Paint)

Value21.3 s

0/100

25%

SI (Speed Index)

Value20.6 s

0/100

10%

TBT (Total Blocking Time)

Value10,280 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.076

95/100

15%

TTI (Time to Interactive)

Value23.9 s

1/100

10%

Network Requests Diagram

wibnet.nl

412 ms

EAS_tag.1.0.js

242 ms

require.js

229 ms

css_7bdff53bba57603060735ef4ed8cf96b_9.css

403 ms

js_dca473f07456b2d7c7516289436fe468_42345.js

572 ms

Our browser made a total of 140 requests to load all elements on the main page. We found that 73% of them (102 requests) were addressed to the original Wibnet.nl, 8% (11 requests) were made to Eas4.emediate.eu and 3% (4 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1 sec) belongs to the original domain Wibnet.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.0 MB (29%)

Content Size

3.6 MB

After Optimization

2.5 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Wibnet.nl main page is 3.6 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 70% of websites need less resources to load. Images take 2.4 MB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 102.1 kB

  • Original 119.1 kB
  • After minification 97.4 kB
  • After compression 17.1 kB

HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. This page needs HTML code to be minified as it can gain 21.7 kB, which is 18% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 102.1 kB or 86% of the original size.

Image Optimization

-7%

Potential reduce by 159.0 kB

  • Original 2.4 MB
  • After minification 2.3 MB

Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Wibnet images are well optimized though.

JavaScript Optimization

-73%

Potential reduce by 520.6 kB

  • Original 710.4 kB
  • After minification 583.6 kB
  • After compression 189.7 kB

It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 520.6 kB or 73% of the original size.

CSS Optimization

-86%

Potential reduce by 241.2 kB

  • Original 281.5 kB
  • After minification 275.7 kB
  • After compression 40.3 kB

CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Wibnet.nl needs all CSS files to be minified and compressed as it can save up to 241.2 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 39 (29%)

Requests Now

135

After Optimization

96

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 135 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Wibnet. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 35 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

wibnet.nl

wibnet.nl

412 ms

EAS_tag.1.0.js

EAS_tag.1.0.js

242 ms

require.js

require.js

229 ms

css_7bdff53bba57603060735ef4ed8cf96b_9.css

css_7bdff53bba57603060735ef4ed8cf96b_9.css

403 ms

js_dca473f07456b2d7c7516289436fe468_42345.js

js_dca473f07456b2d7c7516289436fe468_42345.js

572 ms

conversion.js

conversion.js

18 ms

eas

eas

206 ms

emediate.js

emediate.js

82 ms

bp_apachesolr_loader.js

bp_apachesolr_loader.js

150 ms

cookie_compliance.js

cookie_compliance.js

162 ms

main.js

main.js

83 ms

j.php

j.php

30 ms

illvid-nl-logo_orig.png

illvid-nl-logo_orig.png

163 ms

ixodus_ricinus_5x_crop.jpg

ixodus_ricinus_5x_crop.jpg

91 ms

topteaser_sextest.png

topteaser_sextest.png

163 ms

qb2logo1500x1000.jpg

qb2logo1500x1000.jpg

162 ms

iq-test-ny-splash8_se_1.jpg

iq-test-ny-splash8_se_1.jpg

165 ms

daarlig-aande-top-2.jpg

daarlig-aande-top-2.jpg

274 ms

pompeji-3d-skanninger.jpg

pompeji-3d-skanninger.jpg

172 ms

shutterstock_coffee_socialr.jpg

shutterstock_coffee_socialr.jpg

356 ms

autisme_beskaret.jpg

autisme_beskaret.jpg

324 ms

shutterstock_happywife_guryanov-andreyr.png

shutterstock_happywife_guryanov-andreyr.png

482 ms

shutterstock_244478260.jpg

shutterstock_244478260.jpg

274 ms

iq-test-ny-splash_teaser2_se_1.jpg

iq-test-ny-splash_teaser2_se_1.jpg

272 ms

immunterapi-topbillede.jpg

immunterapi-topbillede.jpg

448 ms

kraeft_beskaret.jpg

kraeft_beskaret.jpg

428 ms

alzheimers_beskaret.jpg

alzheimers_beskaret.jpg

432 ms

skisportssteder-top-final_3.jpg

skisportssteder-top-final_3.jpg

400 ms

shutterstock_183150773.jpg

shutterstock_183150773.jpg

433 ms

shutterstock_84473332.jpg

shutterstock_84473332.jpg

484 ms

luftskib-airlander-topbillede.png

luftskib-airlander-topbillede.png

838 ms

shutterstock_147927137.jpg

shutterstock_147927137.jpg

514 ms

astrotest.jpg

astrotest.jpg

513 ms

skorpion_1.jpg

skorpion_1.jpg

527 ms

tvillinger.jpg

tvillinger.jpg

561 ms

chimpanse-teaser.jpg

chimpanse-teaser.jpg

646 ms

jumping-fish.jpg

jumping-fish.jpg

589 ms

drone_0.jpg

drone_0.jpg

597 ms

haletudser-kravler-ud-af-ryggen.jpg

haletudser-kravler-ud-af-ryggen.jpg

608 ms

webspecial_spoerg_nl.jpg

webspecial_spoerg_nl.jpg

640 ms

trekant.jpg

trekant.jpg

664 ms

math-test.jpg

math-test.jpg

674 ms

roxdoku.jpg

roxdoku.jpg

690 ms

stjernebillede.jpg

stjernebillede.jpg

722 ms

the-numbers.jpg

the-numbers.jpg

726 ms

atomic-puzzle.jpg

atomic-puzzle.jpg

742 ms

multitask.png

multitask.png

917 ms

gtm.js

gtm.js

81 ms

wheres_your_country.png

wheres_your_country.png

925 ms

v.gif

v.gif

20 ms

hotjar-21438.js

hotjar-21438.js

112 ms

illsymbol-regular-webfont_v5.woff

illsymbol-regular-webfont_v5.woff

720 ms

analytics.js

analytics.js

19 ms

linkid.js

linkid.js

11 ms

filler.png

filler.png

730 ms

brain-waves.jpg

brain-waves.jpg

669 ms

modules-1f5c71aea63f8df71401422ed80fbe5f.js

modules-1f5c71aea63f8df71401422ed80fbe5f.js

116 ms

multi-stack.jpg

multi-stack.jpg

732 ms

ricochet.png

ricochet.png

1046 ms

collect

collect

80 ms

collect

collect

154 ms

sdk.js

sdk.js

125 ms

isoball.png

isoball.png

896 ms

xlgemius.js

xlgemius.js

315 ms

140 ms

15.js

15.js

84 ms

collect

collect

48 ms

EAS_fif.html

EAS_fif.html

702 ms

moduleload.js

moduleload.js

703 ms

factoryballs.png

factoryballs.png

892 ms

collect

collect

27 ms

63 ms

ga-audiences

ga-audiences

65 ms

ga-audiences

ga-audiences

63 ms

114 ms

ragdoll_cannon.png

ragdoll_cannon.png

941 ms

xd_arbiter.php

xd_arbiter.php

50 ms

xd_arbiter.php

xd_arbiter.php

81 ms

shadow-game.jpg

shadow-game.jpg

696 ms

hexago.jpg

hexago.jpg

654 ms

electricbox.png

electricbox.png

943 ms

tower-of-balance.jpg

tower-of-balance.jpg

705 ms

torvi-cube.jpg

torvi-cube.jpg

722 ms

trigger-ball.jpg

trigger-ball.jpg

770 ms

memory-tap.jpg

memory-tap.jpg

757 ms

can-you-fit_0.jpg

can-you-fit_0.jpg

766 ms

fpdata.js

fpdata.js

101 ms

lsget.html

lsget.html

360 ms

way-of-an-idea.jpg

way-of-an-idea.jpg

769 ms

sum.jpg

sum.jpg

783 ms

gevaar-in-het-heelal.jpg

gevaar-in-het-heelal.jpg

873 ms

iq-test_0.jpg

iq-test_0.jpg

768 ms

shutterstock_coffee_socialr.jpg

shutterstock_coffee_socialr.jpg

769 ms

beluga_n3.jpg

beluga_n3.jpg

761 ms

shutterstock_226649272_3.jpg

shutterstock_226649272_3.jpg

773 ms

flysikkerhed-lyn.jpg

flysikkerhed-lyn.jpg

769 ms

the-ocean-cleanup-teaser-image.jpg

the-ocean-cleanup-teaser-image.jpg

794 ms

hvorfor-springer-kilder-op-af-jorden.jpg

hvorfor-springer-kilder-op-af-jorden.jpg

772 ms

skovluft2_3.jpg

skovluft2_3.jpg

775 ms

falcon_9_3551818b.jpg

falcon_9_3551818b.jpg

770 ms

astronautklasse_beskaret.jpg

astronautklasse_beskaret.jpg

757 ms

planet9_800x600.jpg

planet9_800x600.jpg

768 ms

tordenvejr-lyn-og-torden.jpg

tordenvejr-lyn-og-torden.jpg

845 ms

geniet-een-dier-van-muziek.jpg

geniet-een-dier-van-muziek.jpg

703 ms

john_mcenroe_1979.jpg

john_mcenroe_1979.jpg

697 ms

usa-nam.jpg

usa-nam.jpg

709 ms

forside_5.jpg

forside_5.jpg

676 ms

maaneformoerkelse-topbillede.png

maaneformoerkelse-topbillede.png

698 ms

blodmaane_web.jpg

blodmaane_web.jpg

689 ms

maanekiggeri.jpg

maanekiggeri.jpg

675 ms

rexdot.js

rexdot.js

99 ms

EAS_tag.1.0.js

EAS_tag.1.0.js

655 ms

columbus_web.jpg

columbus_web.jpg

672 ms

bp_apachesolr.js

bp_apachesolr.js

615 ms

mars-one-astronaut-1.png

mars-one-astronaut-1.png

615 ms

daarlig-aande-top-2.jpg

daarlig-aande-top-2.jpg

625 ms

the-ocean-cleanup-teaser-image.jpg

the-ocean-cleanup-teaser-image.jpg

560 ms

snot-top.jpg

snot-top.jpg

552 ms

programmoerer2_beskaret.jpg

programmoerer2_beskaret.jpg

562 ms

monster_beskaret.jpg

monster_beskaret.jpg

541 ms

newsletter-nl.png

newsletter-nl.png

529 ms

digitalt_magasin_teaser1.jpg

digitalt_magasin_teaser1.jpg

534 ms

featurebillede-saernumre-nl.png

featurebillede-saernumre-nl.png

688 ms

qb2logo1500x1000.jpg

qb2logo1500x1000.jpg

519 ms

forside-nl-1-bund.jpg

forside-nl-1-bund.jpg

525 ms

cookiepolicy.png

cookiepolicy.png

529 ms

eas

eas

121 ms

eas

eas

241 ms

eas

eas

243 ms

eas

eas

249 ms

eas

eas

244 ms

eas

eas

243 ms

tools.js

tools.js

159 ms

jquery.nouislider.js

jquery.nouislider.js

188 ms

jquery.ba-dotimeout.js

jquery.ba-dotimeout.js

201 ms

EAS_tag.1.0.js

EAS_tag.1.0.js

131 ms

BannerviB300_158gesond.jpg

BannerviB300_158gesond.jpg

476 ms

Banner-WiB-618_200-drone.jpg

Banner-WiB-618_200-drone.jpg

474 ms

eas

eas

124 ms

eas

eas

126 ms

Accessibility Review

wibnet.nl accessibility score

81

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-*] attributes do not match their roles

High

ARIA IDs are not unique

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Names and labels

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

Image elements do not have [alt] attributes

Best Practices

wibnet.nl best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

wibnet.nl SEO score

93

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

Mobile Friendly

Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).

Impact

Issue

High

Document uses legible font sizes

Language and Encoding

  • Language Detected

    NL

  • Language Claimed

    NL

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Wibnet.nl can be misinterpreted by Google and other search engines. Our service has detected that Dutch is used on the page, and it matches the claimed language. Our system also found out that Wibnet.nl main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.

Social Sharing Optimization

wibnet.nl

Open Graph data is detected on the main page of Wibnet. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: