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Report Summary

About Website

Visit allingua.lu now to see the best up-to-date Allingua content and also check out these interesting facts you probably never knew about allingua.lu

Le CLL propose des cours de langues en Belgique en présentiel et en ligne. Apprendre l'anglais, le néerlandais, le français, l'espagnol ou 33 autres langues: les centres du CLL offrent des solutions ...

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name

value

score

weighting

FCP (First Contentful Paint)

Value3.6 s

33/100

10%

LCP (Largest Contentful Paint)

Value10.0 s

0/100

25%

SI (Speed Index)

Value7.8 s

24/100

10%

TBT (Total Blocking Time)

Value1,650 ms

11/100

30%

CLS (Cumulative Layout Shift)

Value0.039

100/100

15%

TTI (Time to Interactive)

Value16.1 s

6/100

10%

formateur-aux-institutions-europeennes

708 ms

main.css

203 ms

uc.js

112 ms

picturefill.js

805 ms

api.js

133 ms

Our browser made a total of 32 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Allingua.lu, 6% (2 requests) were made to Consent.cookiebot.com and 6% (2 requests) were made to Consentcdn.cookiebot.com. The less responsive or slowest element that took the longest time to load (2.2 sec) relates to the external source Cll.be.

Content Size

433.7 kB

After Optimization

382.0 kB

In fact, the total size of Allingua.lu main page is 433.7 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. 40% of websites need less resources to load. Javascripts take 294.4 kB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 41.7 kB

Original 48.2 kB
After minification 40.8 kB
After compression 6.5 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 7.4 kB, which is 15% 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 41.7 kB or 87% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

Original 47.1 kB
After minification 47.1 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. Allingua images are well optimized though.

JavaScript Optimization

-3%

Potential reduce by 9.7 kB

Original 294.4 kB
After minification 294.4 kB
After compression 284.8 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. This website has mostly compressed JavaScripts.

CSS Optimization

-1%

Potential reduce by 313 B

Original 44.0 kB
After minification 44.0 kB
After compression 43.7 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. Allingua.lu has all CSS files already compressed.

Requests Now

After Optimization

The browser has sent 27 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Allingua. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts 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 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

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

High

Missing source maps for large first-party JavaScript

Search Engine Optimization Advices

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

Language and Encoding

Language Detected

FR
Language Claimed

FR
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Allingua.lu can be misinterpreted by Google and other search engines. Our service has detected that French is used on the page, and it matches the claimed language. Our system also found out that Allingua.lu 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

allingua.lu

Open Graph data is detected on the main page of Allingua. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook:

Report Summary

Performance

Accessibility

Best Practices

SEO

Jobs - CLL

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)