Access verkeerskunde.nl. Verkeerskunde | Hét multimediale platform voor verkeerskundigen

name

value

score

weighting

FCP (First Contentful Paint)

Value3.8 s

28/100

10%

LCP (Largest Contentful Paint)

Value13.9 s

0/100

25%

SI (Speed Index)

Value8.2 s

20/100

10%

TBT (Total Blocking Time)

Value1,000 ms

27/100

30%

CLS (Cumulative Layout Shift)

Value0.022

100/100

15%

TTI (Time to Interactive)

Value14.4 s

9/100

10%

verkeerskunde.nl

259 ms

verkeerskunde.nl

407 ms

www.verkeerskunde.nl

497 ms

css_nztB3SQYx9DKpOLuiyd5tXqC_gNC9yvrPNPH4idcG5k.css

97 ms

css_wa75ABvksOvPJXfUuKefxbIE2DFeZW_7OMGZBn3aBR0.css

373 ms

Our browser made a total of 64 requests to load all elements on the main page. We found that 72% of them (46 requests) were addressed to the original Verkeerskunde.nl, 13% (8 requests) were made to Adserver.acquire.nl and 9% (6 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (5.9 sec) relates to the external source Adserver.acquire.nl.

Content Size

3.4 MB

After Optimization

3.3 MB

In fact, the total size of Verkeerskunde.nl main page is 3.4 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 3.1 MB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 66.9 kB

Original 81.4 kB
After minification 74.8 kB
After compression 14.6 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 66.9 kB or 82% of the original size.

Image Optimization

-2%

Potential reduce by 53.8 kB

Original 3.1 MB
After minification 3.0 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. Verkeerskunde images are well optimized though.

JavaScript Optimization

-12%

Potential reduce by 15.7 kB

Original 130.4 kB
After minification 130.4 kB
After compression 114.7 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 15.7 kB or 12% of the original size.

CSS Optimization

-19%

Potential reduce by 18.3 kB

Original 96.5 kB
After minification 96.5 kB
After compression 78.2 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. Verkeerskunde.nl needs all CSS files to be minified and compressed as it can save up to 18.3 kB or 19% of the original size.

Requests Now

After Optimization

The browser has sent 51 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Verkeerskunde. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

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

These are opportunities to improve keyboard navigation in your application.

High

Heading elements are not in a sequentially-descending order

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.

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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

High

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

Areas of Improvement

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

High

Displays images with incorrect aspect ratio

Low

Detected JavaScript libraries

Search Engine Optimization Advices

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

High

Links are not crawlable

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

High

Image elements do not have [alt] attributes

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/).

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 Verkeerskunde.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 Verkeerskunde.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

verkeerskunde.nl

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

Report Summary

Performance

Accessibility

Best Practices

SEO

Verkeerskunde | Hét multimediale platform voor verkeerskundigen

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

verkeerskunde.nl

verkeerskunde.nl

www.verkeerskunde.nl

css_nztB3SQYx9DKpOLuiyd5tXqC_gNC9yvrPNPH4idcG5k.css

css_wa75ABvksOvPJXfUuKefxbIE2DFeZW_7OMGZBn3aBR0.css

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

verkeerskunde.nl

verkeerskunde.nl

www.verkeerskunde.nl

css_nztB3SQYx9DKpOLuiyd5tXqC_gNC9yvrPNPH4idcG5k.css

css_wa75ABvksOvPJXfUuKefxbIE2DFeZW_7OMGZBn3aBR0.css

icon

asyncjs.php

embed.php

js_hsbLr7oE9eIde1Rnq3FKmhWkUPRbwq1ZKE37ujdPbxg.js

css

gtm.js

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