Tools & Wizards About Us
cafesig.ulb.ac.be screenshot

Report Summary

  • 53

    Performance

    Renders faster than
    70% of other websites

  • 99

    Accessibility

    Visual factors better than
    that of 96% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 94

    SEO

    Google-friendlier than
    90% of websites

cafesig.ulb.ac.be

Accueil | - Environnement d'apprentissage en SIG libre -

Page Load Speed

3.3 sec in total

First Response

475 ms

Resources Loaded

2.6 sec

Page Rendered

171 ms

cafesig.ulb.ac.be screenshot

About Website

Click here to check amazing Cafe SIG Ulb content for Belgium. Otherwise, check out these important facts you probably never knew about cafesig.ulb.ac.be

Bienvenue !Ce site est développé dans le cadre de stages de formation en SIG libres donnés à l'Université Libre de Bruxelles, et financé par l'ARES. Il comprend : une collection de matériel ...

Visit cafesig.ulb.ac.be

Key Findings

We analyzed Cafesig.ulb.ac.be page load time and found that the first response time was 475 ms and then it took 2.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

cafesig.ulb.ac.be performance score

53

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.1 s

22/100

10%

LCP (Largest Contentful Paint)

Value4.7 s

33/100

25%

SI (Speed Index)

Value4.9 s

65/100

10%

TBT (Total Blocking Time)

Value460 ms

62/100

30%

CLS (Cumulative Layout Shift)

Value0.009

100/100

15%

TTI (Time to Interactive)

Value10.8 s

22/100

10%

Network Requests Diagram

cafesig.ulb.ac.be

475 ms

cafesig.ulb.ac.be

666 ms

yui_combo.php

179 ms

all

550 ms

polyfill.js

467 ms

Our browser made a total of 20 requests to load all elements on the main page. We found that 90% of them (18 requests) were addressed to the original Cafesig.ulb.ac.be, 5% (1 request) were made to I.creativecommons.org and 5% (1 request) were made to Licensebuttons.net. The less responsive or slowest element that took the longest time to load (666 ms) belongs to the original domain Cafesig.ulb.ac.be.

Page Optimization Overview & Recommendations

Page size can be reduced by 70.1 kB (38%)

Content Size

182.4 kB

After Optimization

112.3 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Cafesig.ulb.ac.be main page is 182.4 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. 15% of websites need less resources to load. Javascripts take 87.0 kB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 68.0 kB

  • Original 80.5 kB
  • After minification 64.3 kB
  • After compression 12.4 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 16.2 kB, which is 20% 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 68.0 kB or 85% of the original size.

Image Optimization

-13%

Potential reduce by 1.9 kB

  • Original 14.9 kB
  • After minification 12.9 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, Cafe SIG Ulb needs image optimization as it can save up to 1.9 kB or 13% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-0%

Potential reduce by 116 B

  • Original 87.0 kB
  • After minification 87.0 kB
  • After compression 86.9 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. This website has mostly compressed JavaScripts.

Requests Breakdown

Number of requests can be reduced by 7 (44%)

Requests Now

16

After Optimization

9

  • Images
  • JavaScript
  • CSS

The browser has sent 16 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cafe SIG Ulb. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

cafesig.ulb.ac.be

cafesig.ulb.ac.be

475 ms

cafesig.ulb.ac.be

cafesig.ulb.ac.be

666 ms

yui_combo.php

yui_combo.php

179 ms

all

all

550 ms

polyfill.js

polyfill.js

467 ms

yui_combo.php

yui_combo.php

495 ms

javascript-static.js

javascript-static.js

288 ms

require.min.js

require.min.js

216 ms

88x31.png

88x31.png

149 ms

Cafesig_logo.png

Cafesig_logo.png

226 ms

writer-24

writer-24

144 ms

monologo

monologo

143 ms

moodlelogo_grayhat

moodlelogo_grayhat

145 ms

collapsed

collapsed

89 ms

88x31.png

88x31.png

79 ms

yui_combo.php

yui_combo.php

89 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

100 ms

first.js

first.js

479 ms

yui_combo.php

yui_combo.php

88 ms

events.js

events.js

649 ms

Accessibility Review

cafesig.ulb.ac.be accessibility score

99

Accessibility Issues

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

cafesig.ulb.ac.be best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

cafesig.ulb.ac.be SEO score

94

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

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 Cafesig.ulb.ac.be 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 Cafesig.ulb.ac.be 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

cafesig.ulb.ac.be

Open Graph description is not detected on the main page of Cafe SIG Ulb. 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: