Tools & Wizards About Us
sciences-techniques.univ-nantes.fr screenshot

Report Summary

  • 16

    Performance

    Renders faster than
    30% of other websites

  • 76

    Accessibility

    Visual factors better than
    that of 42% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

sciences-techniques.univ-nantes.fr

Faculté des sciences et des techniques Nantes Université

Page Load Speed

7.6 sec in total

First Response

615 ms

Resources Loaded

6.2 sec

Page Rendered

868 ms

sciences-techniques.univ-nantes.fr screenshot

About Website

Welcome to sciences-techniques.univ-nantes.fr homepage info - get ready to check Sciences Techniques Univ Nantes best content for France right away, or after learning these important things about sciences-techniques.univ-nantes.fr

Formations de Bac+1 à Bac+8 en sciences (biologie, chimie, informatique, maths, physique, svt, histoire des sciences). Structures de recherche de haut niveau. Licences professionnelles et Masters en a...

Visit sciences-techniques.univ-nantes.fr

Key Findings

We analyzed Sciences-techniques.univ-nantes.fr page load time and found that the first response time was 615 ms and then it took 7 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

sciences-techniques.univ-nantes.fr performance score

16

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.9 s

24/100

10%

LCP (Largest Contentful Paint)

Value32.1 s

0/100

25%

SI (Speed Index)

Value17.2 s

0/100

10%

TBT (Total Blocking Time)

Value3,620 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0.102

89/100

15%

TTI (Time to Interactive)

Value31.3 s

0/100

10%

Network Requests Diagram

sciences-techniques.univ-nantes.fr

615 ms

db299ce59b61ec5f70e3659bba547fcf5ded590a.css

287 ms

e74d38d32cf9e49681b3ffcfb1568b2a9c11ddf7.css

584 ms

7d2bde2be433fed2f5cc6d522c2842afa67ccb0b.css

275 ms

3e2a2a5ede328e3de915256cc57ee61179a8cad1.js

489 ms

Our browser made a total of 78 requests to load all elements on the main page. We found that 78% of them (61 requests) were addressed to the original Sciences-techniques.univ-nantes.fr, 10% (8 requests) were made to Youtube.com and 5% (4 requests) were made to Jnn-pa.googleapis.com. The less responsive or slowest element that took the longest time to load (4.2 sec) belongs to the original domain Sciences-techniques.univ-nantes.fr.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.2 MB (16%)

Content Size

7.8 MB

After Optimization

6.6 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Sciences-techniques.univ-nantes.fr main page is 7.8 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. 50% of websites need less resources to load. Images take 7.3 MB which makes up the majority of the site volume.

HTML Optimization

-89%

Potential reduce by 192.5 kB

  • Original 216.7 kB
  • After minification 164.6 kB
  • After compression 24.2 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 52.1 kB, which is 24% 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 192.5 kB or 89% of the original size.

Image Optimization

-14%

Potential reduce by 1.0 MB

  • Original 7.3 MB
  • After minification 6.3 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. Obviously, Sciences Techniques Univ Nantes needs image optimization as it can save up to 1.0 MB or 14% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-2%

Potential reduce by 2.9 kB

  • Original 167.1 kB
  • After minification 167.1 kB
  • After compression 164.2 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. This website has mostly compressed JavaScripts.

CSS Optimization

-0%

Potential reduce by 0 B

  • Original 59.3 kB
  • After minification 59.3 kB
  • After compression 59.3 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. Sciences-techniques.univ-nantes.fr has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 14 (21%)

Requests Now

67

After Optimization

53

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 67 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sciences Techniques Univ Nantes. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

sciences-techniques.univ-nantes.fr

sciences-techniques.univ-nantes.fr

615 ms

db299ce59b61ec5f70e3659bba547fcf5ded590a.css

db299ce59b61ec5f70e3659bba547fcf5ded590a.css

287 ms

e74d38d32cf9e49681b3ffcfb1568b2a9c11ddf7.css

e74d38d32cf9e49681b3ffcfb1568b2a9c11ddf7.css

584 ms

7d2bde2be433fed2f5cc6d522c2842afa67ccb0b.css

7d2bde2be433fed2f5cc6d522c2842afa67ccb0b.css

275 ms

3e2a2a5ede328e3de915256cc57ee61179a8cad1.js

3e2a2a5ede328e3de915256cc57ee61179a8cad1.js

489 ms

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deb4caf74be12b2311426604851cff2dc2e5b0ff.js

293 ms

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1ebe4e4feac7d0f2511f61820771dbe621d00ce8.js

291 ms

configuration.js

configuration.js

685 ms

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2a0193e321503615e32700a0510c4dcc11600bf0.js

1288 ms

jquery.data-lightbox.js

jquery.data-lightbox.js

685 ms

rtUKkZeJ_eY

rtUKkZeJ_eY

227 ms

sBd4vU2JOfw

sBd4vU2JOfw

642 ms

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117 ms

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716 ms

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714 ms

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714 ms

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714 ms

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781 ms

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1560 ms

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1831 ms

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2088 ms

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1564 ms

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1825 ms

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1301 ms

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1592 ms

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1922 ms

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1924 ms

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1877 ms

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2101 ms

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2105 ms

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2152 ms

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2198 ms

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2199 ms

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2363 ms

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2554 ms

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2380 ms

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3140 ms

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2827 ms

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2739 ms

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2727 ms

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2922 ms

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3013 ms

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4154 ms

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3102 ms

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3448 ms

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3090 ms

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3179 ms

SourceSansPro-Regular.ttf

SourceSansPro-Regular.ttf

3619 ms

www-player.css

www-player.css

12 ms

www-embed-player.js

www-embed-player.js

32 ms

base.js

base.js

59 ms

ad_status.js

ad_status.js

361 ms

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281 ms

embed.js

embed.js

177 ms

SourceSansPro-SemiBold.ttf

SourceSansPro-SemiBold.ttf

3060 ms

SourceSansPro-Bold.ttf

SourceSansPro-Bold.ttf

3307 ms

Beatrice-Regular.otf

Beatrice-Regular.otf

3059 ms

Beatrice-Medium.otf

Beatrice-Medium.otf

3296 ms

Beatrice-Semibold.otf

Beatrice-Semibold.otf

3448 ms

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280 ms

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370 ms

Beatrice-bold.ttf

Beatrice-bold.ttf

3424 ms

Create

Create

230 ms

Create

Create

328 ms

id

id

221 ms

GenerateIT

GenerateIT

12 ms

GenerateIT

GenerateIT

20 ms

icomoon.ttf

icomoon.ttf

2752 ms

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2741 ms

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2737 ms

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2728 ms

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2605 ms

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2731 ms

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logo_footer.png

2598 ms

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logo-MESRI.png

2650 ms

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log_event

15 ms

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15 ms

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190 ms

Accessibility Review

sciences-techniques.univ-nantes.fr accessibility score

76

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-hidden="true"] elements contain focusable descendents

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

High

<frame> or <iframe> elements do not have a title

High

Links do not have a discernible 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

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

High

Heading elements are not in a sequentially-descending order

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

sciences-techniques.univ-nantes.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

High

Missing source maps for large first-party JavaScript

SEO Factors

sciences-techniques.univ-nantes.fr SEO score

100

Search Engine Optimization Advices

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 Sciences-techniques.univ-nantes.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 Sciences-techniques.univ-nantes.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

sciences-techniques.univ-nantes.fr

Open Graph data is detected on the main page of Sciences Techniques Univ Nantes. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: