Tools & Wizards About Us

Report Summary

  • 16

    Performance

    Renders faster than
    30% of other websites

  • 60

    Accessibility

    Visual factors better than
    that of 26% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

alumni.unistra.fr

Alumni Université de Strasbourg | Restons connectés, vraiment.

Page Load Speed

13.8 sec in total

First Response

376 ms

Resources Loaded

12.8 sec

Page Rendered

623 ms

About Website

Visit alumni.unistra.fr now to see the best up-to-date Alumni Unistra content for France and also check out these interesting facts you probably never knew about alumni.unistra.fr

Le réseau Alumni développe l'entraide professionnelle entre les étudiants et diplômés de l'Université de Strasbourg.

Visit alumni.unistra.fr

Key Findings

We analyzed Alumni.unistra.fr page load time and found that the first response time was 376 ms and then it took 13.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

alumni.unistra.fr performance score

16

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value20.6 s

0/100

10%

LCP (Largest Contentful Paint)

Value22.4 s

0/100

25%

SI (Speed Index)

Value20.6 s

0/100

10%

TBT (Total Blocking Time)

Value2,790 ms

3/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value32.3 s

0/100

10%

Network Requests Diagram

alumni.unistra.fr

376 ms

alumni.unistra.fr

2456 ms

main.css

971 ms

modules.css

802 ms

styles.css

1300 ms

Our browser made a total of 138 requests to load all elements on the main page. We found that 51% of them (71 requests) were addressed to the original Alumni.unistra.fr, 14% (19 requests) were made to Maps.googleapis.com and 6% (8 requests) were made to Apis.google.com. The less responsive or slowest element that took the longest time to load (6.1 sec) belongs to the original domain Alumni.unistra.fr.

Page Optimization Overview & Recommendations

Page size can be reduced by 2.2 MB (73%)

Content Size

3.0 MB

After Optimization

823.4 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Alumni.unistra.fr main page is 3.0 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. 70% of websites need less resources to load. Javascripts take 1.5 MB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 355.2 kB

  • Original 424.7 kB
  • After minification 391.5 kB
  • After compression 69.5 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 355.2 kB or 84% of the original size.

Image Optimization

-15%

Potential reduce by 31.2 kB

  • Original 212.1 kB
  • After minification 180.9 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. Obviously, Alumni Unistra needs image optimization as it can save up to 31.2 kB or 15% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-72%

Potential reduce by 1.1 MB

  • Original 1.5 MB
  • After minification 1.4 MB
  • After compression 425.9 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 1.1 MB or 72% of the original size.

CSS Optimization

-82%

Potential reduce by 669.6 kB

  • Original 816.7 kB
  • After minification 815.0 kB
  • After compression 147.1 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. Alumni.unistra.fr needs all CSS files to be minified and compressed as it can save up to 669.6 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 83 (67%)

Requests Now

123

After Optimization

40

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 123 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Alumni Unistra. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 63 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

alumni.unistra.fr accessibility score

60

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

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

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

alumni.unistra.fr best practices score

67

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

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

alumni.unistra.fr SEO score

77

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

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

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Alumni.unistra.fr can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Alumni.unistra.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 data is detected on the main page of Alumni Unistra. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: