Access tet.nl. De snelste theorie-cursus voor CBR examens auto, motor en bromfiets

name

value

score

weighting

FCP (First Contentful Paint)

Value8.3 s

0/100

10%

LCP (Largest Contentful Paint)

Value11.4 s

0/100

25%

SI (Speed Index)

Value11.1 s

6/100

10%

TBT (Total Blocking Time)

Value250 ms

84/100

30%

CLS (Cumulative Layout Shift)

Value1.01

2/100

15%

TTI (Time to Interactive)

Value11.4 s

19/100

10%

tet.nl

630 ms

gtm.js

106 ms

modal.css

165 ms

bootstrap.css

414 ms

mod_testimonials_slider.css

256 ms

Our browser made a total of 72 requests to load all elements on the main page. We found that 94% of them (68 requests) were addressed to the original Tet.nl, 3% (2 requests) were made to Googletagmanager.com and 3% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (910 ms) belongs to the original domain Tet.nl.

Content Size

237.1 kB

After Optimization

55.5 kB

In fact, the total size of Tet.nl main page is 237.1 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. 55% of websites need less resources to load. CSS take 162.8 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 41.5 kB

Original 51.2 kB
After minification 42.0 kB
After compression 9.7 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 9.1 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 41.5 kB or 81% of the original size.

Image Optimization

-1%

Potential reduce by 11 B

Original 1.0 kB
After minification 1.0 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. Tet images are well optimized though.

JavaScript Optimization

-3%

Potential reduce by 762 B

Original 22.1 kB
After minification 21.7 kB
After compression 21.3 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

-86%

Potential reduce by 139.3 kB

Original 162.8 kB
After minification 129.1 kB
After compression 23.5 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. Tet.nl needs all CSS files to be minified and compressed as it can save up to 139.3 kB or 86% of the original size.

Requests Now

After Optimization

The browser has sent 67 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Tet. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 22 to 1 for JavaScripts and from 22 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

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

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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 the experience of reading tabular or list data using assistive technology, like a screen reader.

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

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 Tet.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 Tet.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

tet.nl

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

De snelste theorie-cursus voor CBR examens auto, motor en bromfiets | tet.nl

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

tet.nl

gtm.js

modal.css

bootstrap.css

mod_testimonials_slider.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

tet.nl

gtm.js

modal.css

bootstrap.css

mod_testimonials_slider.css

mootools-core.js

core.js

mootools-more.js

modal.js

jquery.min.js

jquery-noconflict.js

jquery-migrate.min.js

bootstrap.min.js

itc-slider.js

base.css

layout.css

menus.css

tools.css

system.css

extensions.css

tet.css

selectbox.css

custom.css

arial.css

arial.css

style.css

warp.js

responsive.js

accordionmenu.js

dropdownmenu.js

detectmobilebrowser.js

capslockchecker.js

template.js

modernizr.custom.56597.js

ajax.js

js

jquery.stellar.js

base.css

layout.css

menus.css

tools.css

system.css

system.css