Report Summary

  • 56

    Performance

    Renders faster than
    73% of other websites

  • 74

    Accessibility

    Visual factors better than
    that of 41% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 78

    SEO

    Google-friendlier than
    40% of websites

col21-malraux.ac-dijon.fr

Collège André Malraux Dijon

Page Load Speed

3.3 sec in total

First Response

779 ms

Resources Loaded

2.4 sec

Page Rendered

143 ms

col21-malraux.ac-dijon.fr screenshot

About Website

Welcome to col21-malraux.ac-dijon.fr homepage info - get ready to check Col21 Malraux Ac Dijon best content for France right away, or after learning these important things about col21-malraux.ac-dijon.fr

Visit col21-malraux.ac-dijon.fr

Key Findings

We analyzed Col21-malraux.ac-dijon.fr page load time and found that the first response time was 779 ms and then it took 2.5 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

col21-malraux.ac-dijon.fr performance score

56

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.3 s

7/100

10%

LCP (Largest Contentful Paint)

Value7.0 s

6/100

25%

SI (Speed Index)

Value6.5 s

38/100

10%

TBT (Total Blocking Time)

Value50 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value7.1 s

51/100

10%

Network Requests Diagram

col21-malraux.ac-dijon.fr

779 ms

colorbox.css

103 ms

barre_outils.css

396 ms

spip.php

515 ms

jquery.js

523 ms

Our browser made a total of 34 requests to load all elements on the main page. We found that all of those requests were addressed to Col21-malraux.ac-dijon.fr and no external sources were called. The less responsive or slowest element that took the longest time to load (779 ms) belongs to the original domain Col21-malraux.ac-dijon.fr.

Page Optimization Overview & Recommendations

Page size can be reduced by 503.8 kB (39%)

Content Size

1.3 MB

After Optimization

797.1 kB

In fact, the total size of Col21-malraux.ac-dijon.fr main page is 1.3 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. 35% of websites need less resources to load. Images take 742.9 kB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 22.8 kB

  • Original 30.4 kB
  • After minification 27.4 kB
  • After compression 7.6 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 22.8 kB or 75% of the original size.

Image Optimization

-5%

Potential reduce by 34.8 kB

  • Original 742.9 kB
  • After minification 708.0 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. Col21 Malraux Ac Dijon images are well optimized though.

JavaScript Optimization

-84%

Potential reduce by 366.8 kB

  • Original 435.7 kB
  • After minification 235.8 kB
  • After compression 68.8 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 366.8 kB or 84% of the original size.

CSS Optimization

-86%

Potential reduce by 79.3 kB

  • Original 91.9 kB
  • After minification 59.5 kB
  • After compression 12.6 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. Col21-malraux.ac-dijon.fr needs all CSS files to be minified and compressed as it can save up to 79.3 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 18 (55%)

Requests Now

33

After Optimization

15

The browser has sent 33 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Col21 Malraux Ac Dijon. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

col21-malraux.ac-dijon.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

[id] attributes on active, focusable elements are not unique

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

col21-malraux.ac-dijon.fr best practices score

58

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

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

col21-malraux.ac-dijon.fr SEO score

78

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 Col21-malraux.ac-dijon.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 Col21-malraux.ac-dijon.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 description is not detected on the main page of Col21 Malraux Ac Dijon. 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: