Tools & Wizards About Us
polytech.univ-nantes.fr screenshot

Report Summary

  • 22

    Performance

    Renders faster than
    40% of other websites

  • 78

    Accessibility

    Visual factors better than
    that of 46% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 90

    SEO

    Google-friendlier than
    68% of websites

polytech.univ-nantes.fr

Devenez ingénieur avec Polytech Nantes - Polytech Nantes - Ecole d'ingénieurs

Page Load Speed

8.1 sec in total

First Response

653 ms

Resources Loaded

6.2 sec

Page Rendered

1.2 sec

polytech.univ-nantes.fr screenshot

About Website

Visit polytech.univ-nantes.fr now to see the best up-to-date Polytech Univ Nantes content for France and also check out these interesting facts you probably never knew about polytech.univ-nantes.fr

Composante de Nantes Université, Polytech Nantes est la première école polytechnique universitaire. Située sur 3 campus, elle délivre des diplômes d'ingénieurs habilités par la CTI dans 10 spécial...

Visit polytech.univ-nantes.fr

Key Findings

We analyzed Polytech.univ-nantes.fr page load time and found that the first response time was 653 ms and then it took 7.5 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

polytech.univ-nantes.fr performance score

22

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.8 s

26/100

10%

LCP (Largest Contentful Paint)

Value23.1 s

0/100

25%

SI (Speed Index)

Value8.3 s

19/100

10%

TBT (Total Blocking Time)

Value2,490 ms

4/100

30%

CLS (Cumulative Layout Shift)

Value0.028

100/100

15%

TTI (Time to Interactive)

Value13.9 s

10/100

10%

Network Requests Diagram

polytech.univ-nantes.fr

653 ms

db299ce59b61ec5f70e3659bba547fcf5ded590a.css

292 ms

a78555aac9d0a8d7fdddfea883badbf6c272064.css

484 ms

7d2bde2be433fed2f5cc6d522c2842afa67ccb0b.css

288 ms

4d85520a914b920c4166c1ded8e8906bf69483eb.js

468 ms

Our browser made a total of 69 requests to load all elements on the main page. We found that 65% of them (45 requests) were addressed to the original Polytech.univ-nantes.fr, 13% (9 requests) were made to Youtube.com and 6% (4 requests) were made to Jnn-pa.googleapis.com. The less responsive or slowest element that took the longest time to load (4.6 sec) belongs to the original domain Polytech.univ-nantes.fr.

Page Optimization Overview & Recommendations

Page size can be reduced by 593.3 kB (17%)

Content Size

3.5 MB

After Optimization

2.9 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Polytech.univ-nantes.fr main page is 3.5 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. 55% of websites need less resources to load. Images take 2.8 MB which makes up the majority of the site volume.

HTML Optimization

-88%

Potential reduce by 182.3 kB

  • Original 206.2 kB
  • After minification 156.8 kB
  • After compression 23.9 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 49.5 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 182.3 kB or 88% of the original size.

Image Optimization

-3%

Potential reduce by 76.2 kB

  • Original 2.8 MB
  • After minification 2.7 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. Polytech Univ Nantes images are well optimized though.

JavaScript Optimization

-33%

Potential reduce by 24.6 kB

  • Original 73.9 kB
  • After minification 73.9 kB
  • After compression 49.3 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 24.6 kB or 33% of the original size.

CSS Optimization

-85%

Potential reduce by 310.1 kB

  • Original 367.0 kB
  • After minification 366.8 kB
  • After compression 56.9 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. Polytech.univ-nantes.fr needs all CSS files to be minified and compressed as it can save up to 310.1 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 24 (41%)

Requests Now

58

After Optimization

34

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 58 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Polytech 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 16 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

polytech.univ-nantes.fr

polytech.univ-nantes.fr

653 ms

db299ce59b61ec5f70e3659bba547fcf5ded590a.css

db299ce59b61ec5f70e3659bba547fcf5ded590a.css

292 ms

a78555aac9d0a8d7fdddfea883badbf6c272064.css

a78555aac9d0a8d7fdddfea883badbf6c272064.css

484 ms

7d2bde2be433fed2f5cc6d522c2842afa67ccb0b.css

7d2bde2be433fed2f5cc6d522c2842afa67ccb0b.css

288 ms

4d85520a914b920c4166c1ded8e8906bf69483eb.js

4d85520a914b920c4166c1ded8e8906bf69483eb.js

468 ms

deb4caf74be12b2311426604851cff2dc2e5b0ff.js

deb4caf74be12b2311426604851cff2dc2e5b0ff.js

270 ms

1ebe4e4feac7d0f2511f61820771dbe621d00ce8.js

1ebe4e4feac7d0f2511f61820771dbe621d00ce8.js

301 ms

js

js

63 ms

configuration.js

configuration.js

513 ms

cd25b103dce97bd3afdcb2415eea00cfd8b7b857.js

cd25b103dce97bd3afdcb2415eea00cfd8b7b857.js

1164 ms

jquery.data-lightbox.js

jquery.data-lightbox.js

712 ms

PolytechNantes.png

PolytechNantes.png

427 ms

PolytechNantes.png

PolytechNantes.png

429 ms

profile_1497983176695-png

profile_1497983176695-png

556 ms

facebook-letter-logo_1498153140627-png

facebook-letter-logo_1498153140627-png

552 ms

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twitter-logo-silhouette_1498153227173-png

552 ms

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linkedin-logo_1498153188063-png

1699 ms

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picto-information-oeil_1646391323537-png

1697 ms

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1917 ms

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1917 ms

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1918 ms

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picto-web-03-rogner_1530783449098-png

1916 ms

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2318 ms

logo_footer.png

logo_footer.png

2224 ms

logo-MESRI.png

logo-MESRI.png

2320 ms

piwik.js

piwik.js

1287 ms

IqN4isNP0AQ

IqN4isNP0AQ

342 ms

oLF_5OqvafQ

oLF_5OqvafQ

429 ms

gabarait-slideshow-page-accueil-welcome-at-polytech-nantes_1586421391977-jpg

gabarait-slideshow-page-accueil-welcome-at-polytech-nantes_1586421391977-jpg

2946 ms

image-diplomes-pn_1660745466379-jpg

image-diplomes-pn_1660745466379-jpg

2771 ms

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2714 ms

photo-equipe-nantes_1663083866037-JPG

photo-equipe-nantes_1663083866037-JPG

4605 ms

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gabarit-carte-thematique-decouvrir-pn_1530858808277-jpg

2670 ms

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gabarit-carte-thematique-admissions_1530858886637-jpg

2734 ms

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gabarit-nos-formations_1536746574238-jpg

3113 ms

gabarit-carte-thematique-vie-etudiante_1530859142381-jpg

gabarit-carte-thematique-vie-etudiante_1530859142381-jpg

3240 ms

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3170 ms

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3238 ms

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3462 ms

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gabarit-carte-thematique-developpement-durable_1530862243535-jpg

3644 ms

SourceSansPro-Regular.ttf

SourceSansPro-Regular.ttf

3728 ms

SourceSansPro-SemiBold.ttf

SourceSansPro-SemiBold.ttf

3616 ms

SourceSansPro-Bold.ttf

SourceSansPro-Bold.ttf

3728 ms

Beatrice-Regular.otf

Beatrice-Regular.otf

3728 ms

Beatrice-Medium.otf

Beatrice-Medium.otf

3984 ms

Beatrice-Semibold.otf

Beatrice-Semibold.otf

4095 ms

Beatrice-bold.ttf

Beatrice-bold.ttf

4163 ms

icomoon.ttf

icomoon.ttf

3983 ms

conversion_async.js

conversion_async.js

87 ms

www-player.css

www-player.css

201 ms

www-embed-player.js

www-embed-player.js

189 ms

base.js

base.js

374 ms

fetch-polyfill.js

fetch-polyfill.js

70 ms

140 ms

734 ms

ad_status.js

ad_status.js

885 ms

WmYtwbYsvJeTDmsuIOmqRAOrqYQ4FznKv6GQB7SOtoo.js

WmYtwbYsvJeTDmsuIOmqRAOrqYQ4FznKv6GQB7SOtoo.js

269 ms

embed.js

embed.js

187 ms

piwik.php

piwik.php

568 ms

id

id

415 ms

KFOmCnqEu92Fr1Mu4mxP.ttf

KFOmCnqEu92Fr1Mu4mxP.ttf

528 ms

KFOlCnqEu92Fr1MmEU9fBBc9.ttf

KFOlCnqEu92Fr1MmEU9fBBc9.ttf

532 ms

Create

Create

180 ms

Create

Create

243 ms

GenerateIT

GenerateIT

15 ms

GenerateIT

GenerateIT

22 ms

log_event

log_event

177 ms

log_event

log_event

57 ms

d61d7fdfedae547518ad37ea6a756a82a333d9c8.css

d61d7fdfedae547518ad37ea6a756a82a333d9c8.css

108 ms

Accessibility Review

polytech.univ-nantes.fr accessibility score

78

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

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

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

High

Some elements have a [tabindex] value greater than 0

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

polytech.univ-nantes.fr best practices score

75

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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

polytech.univ-nantes.fr SEO score

90

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

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 Polytech.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 Polytech.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

polytech.univ-nantes.fr

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