Tools & Wizards About Us
rws.nl screenshot

Report Summary

  • 42

    Performance

    Renders faster than
    61% of other websites

  • 87

    Accessibility

    Visual factors better than
    that of 67% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 100

    SEO

    Google-friendlier than
    95% of websites

rws.nl

Home

Page Load Speed

3.5 sec in total

First Response

411 ms

Resources Loaded

2.7 sec

Page Rendered

392 ms

rws.nl screenshot

About Website

Welcome to rws.nl homepage info - get ready to check Rws best content for Netherlands right away, or after learning these important things about rws.nl

Rijkswaterstaat.nl is dé website van Rijkswaterstaat. Hier vindt u onder andere ons laatste nieuws en informatie over onze organisatie en lopende projecten.

Visit rws.nl

Key Findings

We analyzed Rws.nl page load time and found that the first response time was 411 ms and then it took 3.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

rws.nl performance score

42

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.5 s

36/100

10%

LCP (Largest Contentful Paint)

Value5.8 s

16/100

25%

SI (Speed Index)

Value7.9 s

23/100

10%

TBT (Total Blocking Time)

Value670 ms

45/100

30%

CLS (Cumulative Layout Shift)

Value0.002

100/100

15%

TTI (Time to Interactive)

Value8.5 s

38/100

10%

Network Requests Diagram

rws.nl

411 ms

modernizr.js

541 ms

video.js

639 ms

main.css

682 ms

custom.css

631 ms

Our browser made a total of 49 requests to load all elements on the main page. We found that 10% of them (5 requests) were addressed to the original Rws.nl, 84% (41 requests) were made to Staticresources.rijkswaterstaat.nl and 2% (1 request) were made to Knmi.nl. The less responsive or slowest element that took the longest time to load (1.2 sec) relates to the external source Staticresources.rijkswaterstaat.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 406.5 kB (36%)

Content Size

1.1 MB

After Optimization

732.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Rws.nl main page is 1.1 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. 30% of websites need less resources to load. Images take 593.2 kB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 49.7 kB

  • Original 58.1 kB
  • After minification 43.5 kB
  • After compression 8.5 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 14.6 kB, which is 25% 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 49.7 kB or 85% of the original size.

Image Optimization

-2%

Potential reduce by 11.6 kB

  • Original 593.2 kB
  • After minification 581.6 kB

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. Rws images are well optimized though.

JavaScript Optimization

-68%

Potential reduce by 253.2 kB

  • Original 373.0 kB
  • After minification 371.8 kB
  • After compression 119.8 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 253.2 kB or 68% of the original size.

CSS Optimization

-81%

Potential reduce by 92.0 kB

  • Original 114.2 kB
  • After minification 113.8 kB
  • After compression 22.2 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. Rws.nl needs all CSS files to be minified and compressed as it can save up to 92.0 kB or 81% of the original size.

Requests Breakdown

Number of requests can be reduced by 9 (21%)

Requests Now

43

After Optimization

34

  • Images
  • JavaScript
  • CSS

The browser has sent 43 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Rws. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

rws.nl

rws.nl

411 ms

modernizr.js

modernizr.js

541 ms

video.js

video.js

639 ms

main.css

main.css

682 ms

custom.css

custom.css

631 ms

jquery-ui-1.10.4.custom.min.css

jquery-ui-1.10.4.custom.min.css

724 ms

libs.js

libs.js

822 ms

rws.js

rws.js

796 ms

custom.js

custom.js

813 ms

jquery.unobtrusive-ajax.min.js

jquery.unobtrusive-ajax.min.js

100 ms

jquery.validate.min.js

jquery.validate.min.js

192 ms

jquery.validate.unobtrusive.min.js

jquery.validate.unobtrusive.min.js

192 ms

jquery-ui-1.10.4.custom.min.js

jquery-ui-1.10.4.custom.min.js

298 ms

weeralarm_info.gif

weeralarm_info.gif

354 ms

logo.png

logo.png

349 ms

Surfer%20voor%20kust%20Walcheren%20530x380_mobile_generated_tcm21-63912.jpg

Surfer%20voor%20kust%20Walcheren%20530x380_mobile_generated_tcm21-63912.jpg

350 ms

deel%20koggeschip%20500%20x%20380_mobile_generated_tcm21-76634.jpg

deel%20koggeschip%20500%20x%20380_mobile_generated_tcm21-76634.jpg

351 ms

IJsselbrug_Doesburg%20500%20x%20380_mobile_generated_tcm21-76692.jpg

IJsselbrug_Doesburg%20500%20x%20380_mobile_generated_tcm21-76692.jpg

352 ms

Hoe%20ontstaat%20een%20file%20500x380_mobile_generated_tcm21-28938.jpg

Hoe%20ontstaat%20een%20file%20500x380_mobile_generated_tcm21-28938.jpg

356 ms

Uitgelichtfoto_BVP_500x380_mobile_generated_tcm21-33522.jpg

Uitgelichtfoto_BVP_500x380_mobile_generated_tcm21-33522.jpg

363 ms

Uitgelichtfoto_Geluidscherm_500x380_mobile_generated_tcm21-33530.jpg

Uitgelichtfoto_Geluidscherm_500x380_mobile_generated_tcm21-33530.jpg

408 ms

jaarbericht_2014_500X380_mobile_generated_tcm21-53804.jpg

jaarbericht_2014_500X380_mobile_generated_tcm21-53804.jpg

456 ms

WerkenbijRWS_WWW_500X380_mobile_generated_tcm21-65419.jpg

WerkenbijRWS_WWW_500X380_mobile_generated_tcm21-65419.jpg

459 ms

filesproeier%20gladheid%202%203200x1280_mobile_generated_tcm21-68548.jpg

filesproeier%20gladheid%202%203200x1280_mobile_generated_tcm21-68548.jpg

594 ms

Lichting%20kogge%20uit%20de%20IJssel%203200x1280_mobile_generated_tcm21-76116.jpg

Lichting%20kogge%20uit%20de%20IJssel%203200x1280_mobile_generated_tcm21-76116.jpg

735 ms

130%20kmh%20op%20nieuwe%20trajecten_mobile_generated_tcm21-75742.jpg

130%20kmh%20op%20nieuwe%20trajecten_mobile_generated_tcm21-75742.jpg

648 ms

VelsertunnelHome4_3200x1000_mobile_generated_tcm21-67711.jpg

VelsertunnelHome4_3200x1000_mobile_generated_tcm21-67711.jpg

645 ms

Project%20Kanaal%20Gent-Terneuzen%203200x1000_mobile_generated_tcm21-63406.jpg

Project%20Kanaal%20Gent-Terneuzen%203200x1000_mobile_generated_tcm21-63406.jpg

691 ms

Profielfoto%20weginspecteur%20Wim%20Grevenstuk_200x200_mobile_generated_tcm21-71654.jpg

Profielfoto%20weginspecteur%20Wim%20Grevenstuk_200x200_mobile_generated_tcm21-71654.jpg

736 ms

footer-logo.png

footer-logo.png

738 ms

piwik.js

piwik.js

674 ms

rijksoverheidsanswebtext-regular-webfont.woff

rijksoverheidsanswebtext-regular-webfont.woff

595 ms

rijksoverheidsanswebtext-bold-webfont.woff

rijksoverheidsanswebtext-bold-webfont.woff

639 ms

icons.woff

icons.woff

682 ms

rijksoverheidsanswebtext-italic-webfont.woff

rijksoverheidsanswebtext-italic-webfont.woff

784 ms

Surfer%20voor%20kust%20Walcheren%20530x380_desktop_generated_tcm21-63916.jpg

Surfer%20voor%20kust%20Walcheren%20530x380_desktop_generated_tcm21-63916.jpg

503 ms

deel%20koggeschip%20500%20x%20380_desktop_generated_tcm21-76638.jpg

deel%20koggeschip%20500%20x%20380_desktop_generated_tcm21-76638.jpg

503 ms

IJsselbrug_Doesburg%20500%20x%20380_desktop_generated_tcm21-76696.jpg

IJsselbrug_Doesburg%20500%20x%20380_desktop_generated_tcm21-76696.jpg

542 ms

Hoe%20ontstaat%20een%20file%20500x380_desktop_generated_tcm21-28942.jpg

Hoe%20ontstaat%20een%20file%20500x380_desktop_generated_tcm21-28942.jpg

585 ms

Uitgelichtfoto_BVP_500x380_desktop_generated_tcm21-33526.jpg

Uitgelichtfoto_BVP_500x380_desktop_generated_tcm21-33526.jpg

602 ms

Uitgelichtfoto_Geluidscherm_500x380_desktop_generated_tcm21-33534.jpg

Uitgelichtfoto_Geluidscherm_500x380_desktop_generated_tcm21-33534.jpg

602 ms

jaarbericht_2014_500X380_desktop_generated_tcm21-53808.jpg

jaarbericht_2014_500X380_desktop_generated_tcm21-53808.jpg

646 ms

WerkenbijRWS_WWW_500X380_desktop_generated_tcm21-65423.jpg

WerkenbijRWS_WWW_500X380_desktop_generated_tcm21-65423.jpg

682 ms

filesproeier%20gladheid%202%203200x1280_desktop_generated_tcm21-68552.jpg

filesproeier%20gladheid%202%203200x1280_desktop_generated_tcm21-68552.jpg

1181 ms

Lichting%20kogge%20uit%20de%20IJssel%203200x1280_desktop_generated_tcm21-76120.jpg

Lichting%20kogge%20uit%20de%20IJssel%203200x1280_desktop_generated_tcm21-76120.jpg

1245 ms

130%20kmh%20op%20nieuwe%20trajecten_desktop_generated_tcm21-75746.jpg

130%20kmh%20op%20nieuwe%20trajecten_desktop_generated_tcm21-75746.jpg

1073 ms

VelsertunnelHome4_3200x1000_desktop_generated_tcm21-67715.jpg

VelsertunnelHome4_3200x1000_desktop_generated_tcm21-67715.jpg

929 ms

Project%20Kanaal%20Gent-Terneuzen%203200x1000_desktop_generated_tcm21-63410.jpg

Project%20Kanaal%20Gent-Terneuzen%203200x1000_desktop_generated_tcm21-63410.jpg

1246 ms

weeralarm_info.gif

weeralarm_info.gif

281 ms

Accessibility Review

rws.nl accessibility score

87

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

[role]s do not have all required [aria-*] attributes

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

Buttons do not have an accessible name

Best Practices

rws.nl best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

rws.nl SEO score

100

Search Engine Optimization Advices

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 Rws.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 Rws.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

rws.nl

Open Graph description is not detected on the main page of Rws. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: