Report Summary

  • 19

    Performance

    Renders faster than
    39% of other websites

  • 74

    Accessibility

    Visual factors better than
    that of 50% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    86% of websites

  • 89

    SEO

    Google-friendlier than
    72% of websites

lelivrescolaire.fr

Lelivrescolaire.fr : manuels numériques pour le collège et le lycée

Page Load Speed

3.8 sec in total

First Response

350 ms

Resources Loaded

3 sec

Page Rendered

489 ms

lelivrescolaire.fr screenshot

About Website

Welcome to lelivrescolaire.fr homepage info - get ready to check Lelivrescolaire best content for France right away, or after learning these important things about lelivrescolaire.fr

Lelivrescolaire.fr : éditeur de manuels scolaires collaboratifs et innovants.

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Key Findings

We analyzed Lelivrescolaire.fr page load time and found that the first response time was 350 ms and then it took 3.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

lelivrescolaire.fr performance score

19

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value11.5 s

0/100

10%

LCP (Largest Contentful Paint)

Value21.0 s

0/100

25%

SI (Speed Index)

Value14.0 s

1/100

10%

TBT (Total Blocking Time)

Value1,630 ms

12/100

30%

CLS (Cumulative Layout Shift)

Value0.013

100/100

15%

TTI (Time to Interactive)

Value28.8 s

0/100

10%

Network Requests Diagram

lelivrescolaire.fr

350 ms

www.lelivrescolaire.fr

122 ms

main.css

40 ms

katex.min.css

6 ms

perfect-scrollbar.css

9 ms

Our browser made a total of 62 requests to load all elements on the main page. We found that 66% of them (41 requests) were addressed to the original Lelivrescolaire.fr, 8% (5 requests) were made to 0 and 5% (3 requests) were made to Code.highcharts.com. The less responsive or slowest element that took the longest time to load (1.6 sec) belongs to the original domain Lelivrescolaire.fr.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.9 MB (41%)

Content Size

4.6 MB

After Optimization

2.7 MB

In fact, the total size of Lelivrescolaire.fr main page is 4.6 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 2.1 MB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 34.2 kB

  • Original 43.5 kB
  • After minification 41.4 kB
  • After compression 9.3 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 34.2 kB or 79% of the original size.

Image Optimization

-0%

Potential reduce by 221 B

  • Original 2.1 MB
  • After minification 2.1 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. Lelivrescolaire images are well optimized though.

JavaScript Optimization

-68%

Potential reduce by 1.1 MB

  • Original 1.6 MB
  • After minification 1.6 MB
  • After compression 518.0 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 1.1 MB or 68% of the original size.

CSS Optimization

-89%

Potential reduce by 763.5 kB

  • Original 858.8 kB
  • After minification 725.9 kB
  • After compression 95.3 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. Lelivrescolaire.fr needs all CSS files to be minified and compressed as it can save up to 763.5 kB or 89% of the original size.

Requests Breakdown

Number of requests can be reduced by 18 (33%)

Requests Now

55

After Optimization

37

The browser has sent 55 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Lelivrescolaire. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 16 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

lelivrescolaire.fr accessibility score

74

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

lelivrescolaire.fr 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

High

Missing source maps for large first-party JavaScript

SEO Factors

lelivrescolaire.fr SEO score

89

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

High

Tap targets are not sized appropriately

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 Lelivrescolaire.fr 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 Lelivrescolaire.fr 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 Lelivrescolaire. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: