Report Summary

  • 25

    Performance

    Renders faster than
    44% of other websites

  • 87

    Accessibility

    Visual factors better than
    that of 66% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

allingua.lu

Jobs - CLL

Page Load Speed

4.8 sec in total

First Response

708 ms

Resources Loaded

3.8 sec

Page Rendered

295 ms

allingua.lu screenshot

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 ...

Visit allingua.lu

Key Findings

We analyzed Allingua.lu page load time and found that the first response time was 708 ms and then it took 4.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

allingua.lu performance score

25

Measured Metrics

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%

Network Requests Diagram

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.

Page Optimization Overview & Recommendations

Page size can be reduced by 130.3 kB (25%)

Content Size

512.3 kB

After Optimization

382.0 kB

In fact, the total size of Allingua.lu main page is 512.3 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 373.1 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

-24%

Potential reduce by 88.3 kB

  • Original 373.1 kB
  • After minification 373.1 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 88.3 kB or 24% of the original size.

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 Breakdown

Number of requests can be reduced by 10 (37%)

Requests Now

27

After Optimization

17

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 Review

allingua.lu accessibility score

87

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

Best Practices

allingua.lu 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

High

Missing source maps for large first-party JavaScript

SEO Factors

allingua.lu SEO score

92

Search Engine Optimization Advices

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

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

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: