Report Summary

  • 16

    Performance

    Renders faster than
    30% of other websites

  • 76

    Accessibility

    Visual factors better than
    that of 42% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 81

    SEO

    Google-friendlier than
    42% of websites

examencentrum.nl

Voor het CBR Theorie-examen oefenen? - Examencentrum.nl!

Page Load Speed

2.3 sec in total

First Response

285 ms

Resources Loaded

1.9 sec

Page Rendered

58 ms

examencentrum.nl screenshot

About Website

Click here to check amazing Examencentrum content for Netherlands. Otherwise, check out these important facts you probably never knew about examencentrum.nl

Bereid je goed voor op het theorie-examen door online te oefenen! Voor welk type theorie-examen je ook gaat, hier vind je de beste oefenexamens!

Visit examencentrum.nl

Key Findings

We analyzed Examencentrum.nl page load time and found that the first response time was 285 ms and then it took 2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.

Performance Metrics

examencentrum.nl performance score

16

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.4 s

72/100

10%

LCP (Largest Contentful Paint)

Value14.1 s

0/100

25%

SI (Speed Index)

Value7.7 s

25/100

10%

TBT (Total Blocking Time)

Value1,430 ms

15/100

30%

CLS (Cumulative Layout Shift)

Value0.898

3/100

15%

TTI (Time to Interactive)

Value12.9 s

13/100

10%

Network Requests Diagram

examencentrum.nl

285 ms

examencentrum.nl

1060 ms

gtm.js

72 ms

public.7af8aa8d07cf7e4bc3d1.css

100 ms

runtime.4459950172d54c5996b7.js

201 ms

Our browser made a total of 10 requests to load all elements on the main page. We found that 60% of them (6 requests) were addressed to the original Examencentrum.nl, 10% (1 request) were made to Googletagmanager.com and 10% (1 request) were made to Google.com. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Examencentrum.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 5.4 kB (1%)

Content Size

502.9 kB

After Optimization

497.5 kB

In fact, the total size of Examencentrum.nl main page is 502.9 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. Only 10% of websites need less resources to load. Javascripts take 335.8 kB which makes up the majority of the site volume.

HTML Optimization

-70%

Potential reduce by 4.1 kB

  • Original 5.9 kB
  • After minification 5.2 kB
  • After compression 1.8 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 678 B, which is 11% 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 4.1 kB or 70% of the original size.

Image Optimization

-0%

Potential reduce by 32 B

  • Original 151.1 kB
  • After minification 151.1 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. Examencentrum images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 1.3 kB

  • Original 335.8 kB
  • After minification 335.8 kB
  • After compression 334.6 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. This website has mostly compressed JavaScripts.

CSS Optimization

-0%

Potential reduce by 22 B

  • Original 10.0 kB
  • After minification 10.0 kB
  • After compression 10.0 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. Examencentrum.nl has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 4 (50%)

Requests Now

8

After Optimization

4

The browser has sent 8 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Examencentrum. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

examencentrum.nl accessibility score

76

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

Links do not have a discernible name

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

examencentrum.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

examencentrum.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

    NL

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Examencentrum.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 Examencentrum.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

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