Tools & Wizards About Us
werkveilig.nl screenshot

Report Summary

  • 21

    Performance

    Renders faster than
    38% of other websites

  • 67

    Accessibility

    Visual factors better than
    that of 32% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 81

    SEO

    Google-friendlier than
    43% of websites

werkveilig.nl

IVM Instituut voor Veiligheid & Milieu | Wij maken werk veilig

Page Load Speed

3.1 sec in total

First Response

431 ms

Resources Loaded

2.4 sec

Page Rendered

274 ms

werkveilig.nl screenshot

About Website

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

IVM maakt werk veilig. Dit doen wij door middel van veiligheidstrainingen, veiligheidsadviezen, inzet van veiligheidspersoneel en verhuur van veiligheidsmiddelen.

Visit werkveilig.nl

Key Findings

We analyzed Werkveilig.nl page load time and found that the first response time was 431 ms and then it took 2.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

werkveilig.nl performance score

21

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.5 s

6/100

10%

LCP (Largest Contentful Paint)

Value16.9 s

0/100

25%

SI (Speed Index)

Value8.8 s

15/100

10%

TBT (Total Blocking Time)

Value2,330 ms

5/100

30%

CLS (Cumulative Layout Shift)

Value0.044

99/100

15%

TTI (Time to Interactive)

Value9.7 s

28/100

10%

Network Requests Diagram

werkveilig.nl

431 ms

normalize.css

93 ms

generic-print.css

181 ms

generic.css

275 ms

ivm.css

186 ms

Our browser made a total of 59 requests to load all elements on the main page. We found that 97% of them (57 requests) were addressed to the original Werkveilig.nl, 3% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.4 sec) belongs to the original domain Werkveilig.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 583.7 kB (17%)

Content Size

3.5 MB

After Optimization

2.9 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Werkveilig.nl main page is 3.5 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. 50% of websites need less resources to load. Images take 2.8 MB which makes up the majority of the site volume.

HTML Optimization

-72%

Potential reduce by 17.6 kB

  • Original 24.5 kB
  • After minification 23.6 kB
  • After compression 7.0 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. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 17.6 kB or 72% of the original size.

Image Optimization

-3%

Potential reduce by 93.2 kB

  • Original 2.8 MB
  • After minification 2.7 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. Werk Veilig images are well optimized though.

JavaScript Optimization

-71%

Potential reduce by 252.4 kB

  • Original 354.9 kB
  • After minification 291.3 kB
  • After compression 102.5 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 252.4 kB or 71% of the original size.

CSS Optimization

-88%

Potential reduce by 220.5 kB

  • Original 251.5 kB
  • After minification 155.9 kB
  • After compression 31.0 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. Werkveilig.nl needs all CSS files to be minified and compressed as it can save up to 220.5 kB or 88% of the original size.

Requests Breakdown

Number of requests can be reduced by 40 (74%)

Requests Now

54

After Optimization

14

  • Images
  • JavaScript
  • CSS

The browser has sent 54 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Werk Veilig. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 15 to 1 for JavaScripts and from 15 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

werkveilig.nl

werkveilig.nl

431 ms

normalize.css

normalize.css

93 ms

generic-print.css

generic-print.css

181 ms

generic.css

generic.css

275 ms

ivm.css

ivm.css

186 ms

menu.css

menu.css

191 ms

ivm_menu.css

ivm_menu.css

192 ms

jquery.plupload.queue.css

jquery.plupload.queue.css

192 ms

eighty-shades.css

eighty-shades.css

268 ms

entypo.css

entypo.css

283 ms

iconmoon-free.css

iconmoon-free.css

284 ms

linecons.css

linecons.css

287 ms

chosen.css

chosen.css

288 ms

jquery-1.4.2.min.js

jquery-1.4.2.min.js

448 ms

generic.js

generic.js

368 ms

jquery.km_modal.js

jquery.km_modal.js

368 ms

wz_tooltip.js

wz_tooltip.js

372 ms

jquery.bgiframe.min.js

jquery.bgiframe.min.js

367 ms

jquery.autocomplete.min.js

jquery.autocomplete.min.js

368 ms

jquery.autocomplete.css

jquery.autocomplete.css

466 ms

jquery.blockUI.js

jquery.blockUI.js

467 ms

jquery.cssemoticons.css

jquery.cssemoticons.css

467 ms

jquery.cssemoticons.min.js

jquery.cssemoticons.min.js

469 ms

system.datepick.css

system.datepick.css

470 ms

jquery.datepick.pack.js

jquery.datepick.pack.js

536 ms

jquery.datepick.ext.pack.js

jquery.datepick.ext.pack.js

546 ms

jquery.datepick-nl.js

jquery.datepick-nl.js

549 ms

scorm12.js

scorm12.js

549 ms

jquery.cycle.all.js

jquery.cycle.all.js

550 ms

chosen.jquery.min.js

chosen.jquery.min.js

552 ms

body_verloop.jpg

body_verloop.jpg

92 ms

IVM_Logo.png

IVM_Logo.png

271 ms

bullet1.png

bullet1.png

94 ms

linkedin.png

linkedin.png

90 ms

twitter.png

twitter.png

93 ms

facebook.png

facebook.png

94 ms

youtube.png

youtube.png

178 ms

home_back1.png

home_back1.png

1446 ms

home_back2.png

home_back2.png

1393 ms

home_back3.png

home_back3.png

1355 ms

bullet1_white.png

bullet1_white.png

183 ms

corner_left.png

corner_left.png

268 ms

corner_right.png

corner_right.png

273 ms

1457-Steun+ons.jpg

1457-Steun+ons.jpg

392 ms

menuline.png

menuline.png

361 ms

grey80.png

grey80.png

352 ms

green_divider.png

green_divider.png

439 ms

bullet2.png

bullet2.png

442 ms

grey_trans.png

grey_trans.png

467 ms

24D36E_0_0.svg

24D36E_0_0.svg

619 ms

24D36E_0_0.woff

24D36E_0_0.woff

712 ms

zurich-cn-light-webfont.svg

zurich-cn-light-webfont.svg

821 ms

zurich-cn-light-webfont.woff

zurich-cn-light-webfont.woff

710 ms

24AA96_0_0.svg

24AA96_0_0.svg

890 ms

24AA96_0_0.woff

24AA96_0_0.woff

802 ms

zurich-cn-bt-regular-webfont.svg

zurich-cn-bt-regular-webfont.svg

983 ms

zurich-cn-bt-regular-webfont.woff

zurich-cn-bt-regular-webfont.woff

911 ms

ga.js

ga.js

7 ms

__utm.gif

__utm.gif

11 ms

Accessibility Review

werkveilig.nl accessibility score

67

Accessibility Issues

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.

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

High

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

werkveilig.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

SEO Factors

werkveilig.nl SEO score

81

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

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

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    NL

  • Language Claimed

    N/A

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Werkveilig.nl can be misinterpreted by Google and other search engines. Our service has detected that Dutch is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Werkveilig.nl main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

werkveilig.nl

Open Graph description is not detected on the main page of Werk Veilig. 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: