Tools & Wizards About Us

Report Summary

  • 50

    Performance

    Renders faster than
    68% of other websites

  • 84

    Accessibility

    Visual factors better than
    that of 56% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 81

    SEO

    Google-friendlier than
    42% of websites

revue.sesamath.net

Les nouvelles technologies pour l'enseignement des mathématiques

Page Load Speed

2.3 sec in total

First Response

585 ms

Resources Loaded

1.5 sec

Page Rendered

244 ms

About Website

Visit revue.sesamath.net now to see the best up-to-date Revue Sesamath content for France and also check out these interesting facts you probably never knew about revue.sesamath.net

MathémaTICE, première revue en ligne destinée à promouvoir les TICE à travers l'enseignement des mathématiques.

Visit revue.sesamath.net

Key Findings

We analyzed Revue.sesamath.net page load time and found that the first response time was 585 ms and then it took 1.7 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.

Performance Metrics

revue.sesamath.net performance score

50

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.9 s

51/100

10%

LCP (Largest Contentful Paint)

Value2.9 s

79/100

25%

SI (Speed Index)

Value9.9 s

9/100

10%

TBT (Total Blocking Time)

Value770 ms

38/100

30%

CLS (Cumulative Layout Shift)

Value0.209

59/100

15%

TTI (Time to Interactive)

Value8.5 s

38/100

10%

Network Requests Diagram

revue.sesamath.net

585 ms

alaune.css

154 ms

f17dd7ede2b893fc16bfd0afaa06509e.css

236 ms

506b8c251a87e631e9c0bfd6607ced73.js

402 ms

tex-svg.js

1137 ms

Our browser made a total of 26 requests to load all elements on the main page. We found that 92% of them (24 requests) were addressed to the original Revue.sesamath.net, 8% (2 requests) were made to Mathgraph32.org. The less responsive or slowest element that took the longest time to load (1.1 sec) relates to the external source Mathgraph32.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 439.8 kB (76%)

Content Size

580.8 kB

After Optimization

141.1 kB

  • HTML
  • Images
  • CSS

In fact, the total size of Revue.sesamath.net main page is 580.8 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. 25% of websites need less resources to load. HTML takes 539.4 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 430.1 kB

  • Original 539.4 kB
  • After minification 445.0 kB
  • After compression 109.3 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. This page needs HTML code to be minified as it can gain 94.4 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 430.1 kB or 80% of the original size.

Image Optimization

-9%

Potential reduce by 277 B

  • Original 2.9 kB
  • After minification 2.7 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. Revue Sesamath images are well optimized though.

CSS Optimization

-24%

Potential reduce by 9.4 kB

  • Original 38.5 kB
  • After minification 38.4 kB
  • After compression 29.1 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. Revue.sesamath.net needs all CSS files to be minified and compressed as it can save up to 9.4 kB or 24% of the original size.

Requests Breakdown

Number of requests can be reduced by 11 (46%)

Requests Now

24

After Optimization

13

  • Images
  • JavaScript
  • CSS

The browser has sent 24 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Revue Sesamath. 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 as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

revue.sesamath.net accessibility score

84

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

<input type="image"> elements do not have [alt] text

High

Form elements do not have associated labels

Best Practices

revue.sesamath.net best practices score

83

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

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

revue.sesamath.net SEO score

81

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

High

robots.txt is not valid

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 Revue.sesamath.net 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 Revue.sesamath.net 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 Revue Sesamath. 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: