Report Summary

  • 57

    Performance

    Renders faster than
    74% of other websites

  • 90

    Accessibility

    Visual factors better than
    that of 75% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 78

    SEO

    Google-friendlier than
    40% of websites

tel.archives-ouvertes.fr

index - TEL - Thèses en ligne

Page Load Speed

4.5 sec in total

First Response

277 ms

Resources Loaded

4 sec

Page Rendered

217 ms

tel.archives-ouvertes.fr screenshot

About Website

Visit tel.archives-ouvertes.fr now to see the best up-to-date TEL Archives Ouvertes content for France and also check out these interesting facts you probably never knew about tel.archives-ouvertes.fr

Visit tel.archives-ouvertes.fr

Key Findings

We analyzed Tel.archives-ouvertes.fr page load time and found that the first response time was 277 ms and then it took 4.2 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

tel.archives-ouvertes.fr performance score

57

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.0 s

9/100

10%

LCP (Largest Contentful Paint)

Value5.7 s

16/100

25%

SI (Speed Index)

Value6.1 s

45/100

10%

TBT (Total Blocking Time)

Value110 ms

98/100

30%

CLS (Cumulative Layout Shift)

Value0.084

93/100

15%

TTI (Time to Interactive)

Value7.8 s

44/100

10%

Network Requests Diagram

tel.archives-ouvertes.fr

277 ms

tel.archives-ouvertes.fr

689 ms

ccsd_form.css

764 ms

jquery-ui-1.10.0.custom.css

996 ms

bootstrap.css

1084 ms

Our browser made a total of 37 requests to load all elements on the main page. We found that 35% of them (13 requests) were addressed to the original Tel.archives-ouvertes.fr, 30% (11 requests) were made to Static.ccsd.cnrs.fr and 14% (5 requests) were made to Thumb.ccsd.cnrs.fr. The less responsive or slowest element that took the longest time to load (1.5 sec) relates to the external source Static.ccsd.cnrs.fr.

Page Optimization Overview & Recommendations

Page size can be reduced by 845.5 kB (71%)

Content Size

1.2 MB

After Optimization

341.8 kB

In fact, the total size of Tel.archives-ouvertes.fr main page is 1.2 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. Javascripts take 829.1 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 35.2 kB

  • Original 44.9 kB
  • After minification 41.4 kB
  • After compression 9.7 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 35.2 kB or 78% of the original size.

Image Optimization

-4%

Potential reduce by 3.9 kB

  • Original 102.2 kB
  • After minification 98.4 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. TEL Archives Ouvertes images are well optimized though.

JavaScript Optimization

-75%

Potential reduce by 625.0 kB

  • Original 829.1 kB
  • After minification 680.5 kB
  • After compression 204.1 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 625.0 kB or 75% of the original size.

CSS Optimization

-86%

Potential reduce by 181.4 kB

  • Original 211.0 kB
  • After minification 167.6 kB
  • After compression 29.6 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. Tel.archives-ouvertes.fr needs all CSS files to be minified and compressed as it can save up to 181.4 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 21 (62%)

Requests Now

34

After Optimization

13

The browser has sent 34 CSS, Javascripts, AJAX and image requests in order to completely render the main page of TEL Archives Ouvertes. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

tel.archives-ouvertes.fr accessibility score

90

Accessibility Issues

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

Buttons do not have an accessible name

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

Best Practices

tel.archives-ouvertes.fr 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

SEO Factors

tel.archives-ouvertes.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

Links do not have descriptive text

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

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Tel.archives-ouvertes.fr can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Tel.archives-ouvertes.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 TEL Archives Ouvertes. 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: