Tools & Wizards About Us

Report Summary

  • 87

    Performance

    Renders faster than
    89% of other websites

  • 86

    Accessibility

    Visual factors better than
    that of 61% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

crans.org

Accueil - Crans

Page Load Speed

1.9 sec in total

First Response

245 ms

Resources Loaded

1.5 sec

Page Rendered

139 ms

About Website

Visit crans.org now to see the best up-to-date Crans content for France and also check out these interesting facts you probably never knew about crans.org

Le Crans est une l'association réseau de l'ENS Paris-Saclay

Visit crans.org

Key Findings

We analyzed Crans.org page load time and found that the first response time was 245 ms and then it took 1.6 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

crans.org performance score

87

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.1 s

47/100

10%

LCP (Largest Contentful Paint)

Value3.1 s

76/100

25%

SI (Speed Index)

Value3.8 s

84/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value3.1 s

95/100

10%

Network Requests Diagram

crans.org

245 ms

www.crans.org

328 ms

www.crans.org

339 ms

style.min.1d27a222395bd7cbbb0cb9a6703f8f5e128f1cda7ac256981fb6a75f6b7ab05d.css

395 ms

fontello.css

238 ms

Our browser made a total of 12 requests to load all elements on the main page. We found that all of those requests were addressed to Crans.org and no external sources were called. The less responsive or slowest element that took the longest time to load (395 ms) belongs to the original domain Crans.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 193.8 kB (85%)

Content Size

226.9 kB

After Optimization

33.1 kB

  • HTML
  • JavaScript
  • CSS

In fact, the total size of Crans.org main page is 226.9 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. Only 10% of websites need less resources to load. CSS take 198.2 kB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 7.0 kB

  • Original 9.4 kB
  • After minification 7.4 kB
  • After compression 2.4 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 2.1 kB, which is 22% 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 7.0 kB or 75% of the original size.

JavaScript Optimization

-79%

Potential reduce by 15.1 kB

  • Original 19.2 kB
  • After minification 13.8 kB
  • After compression 4.1 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 15.1 kB or 79% of the original size.

CSS Optimization

-87%

Potential reduce by 171.7 kB

  • Original 198.2 kB
  • After minification 197.2 kB
  • After compression 26.6 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. Crans.org needs all CSS files to be minified and compressed as it can save up to 171.7 kB or 87% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

8

After Optimization

8

  • Images
  • JavaScript
  • CSS

The browser has sent 8 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Crans. According to our analytics all requests are already optimized.

Network Requests Diagram

Accessibility Review

crans.org accessibility score

86

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

crans.org 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

SEO Factors

crans.org 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 Crans.org 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 Crans.org 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 Crans. 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: