Report Summary

  • 6

    Performance

    Renders faster than
    21% of other websites

  • 72

    Accessibility

    Visual factors better than
    that of 38% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 67

    SEO

    Google-friendlier than
    25% of websites

stib.be

STIB - Société des Transports Intercommunaux de Bruxelles

Page Load Speed

3.7 sec in total

First Response

286 ms

Resources Loaded

3.1 sec

Page Rendered

321 ms

stib.be screenshot

About Website

Click here to check amazing STIB content for Belgium. Otherwise, check out these important facts you probably never knew about stib.be

Notre service Customer Care est à votre entière disposition

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Key Findings

We analyzed Stib.be page load time and found that the first response time was 286 ms and then it took 3.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

stib.be performance score

6

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value10.0 s

0/100

10%

LCP (Largest Contentful Paint)

Value14.8 s

0/100

25%

SI (Speed Index)

Value17.6 s

0/100

10%

TBT (Total Blocking Time)

Value3,850 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0.322

36/100

15%

TTI (Time to Interactive)

Value31.7 s

0/100

10%

Network Requests Diagram

stib.be

286 ms

index.htm

365 ms

stib-utils.js

169 ms

style.css

416 ms

jquery-1.7.1.min.js

414 ms

Our browser made a total of 100 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Stib.be, 85% (85 requests) were made to Stib-mivb.be and 4% (4 requests) were made to Platform.twitter.com. The less responsive or slowest element that took the longest time to load (1.1 sec) relates to the external source Stib-mivb.be.

Page Optimization Overview & Recommendations

Page size can be reduced by 225.2 kB (74%)

Content Size

303.2 kB

After Optimization

78.0 kB

In fact, the total size of Stib.be main page is 303.2 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. 45% of websites need less resources to load. Javascripts take 250.0 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 41.4 kB

  • Original 51.2 kB
  • After minification 38.9 kB
  • After compression 9.8 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 12.3 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 41.4 kB or 81% of the original size.

Image Optimization

-3%

Potential reduce by 61 B

  • Original 2.0 kB
  • After minification 1.9 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. STIB images are well optimized though.

JavaScript Optimization

-73%

Potential reduce by 183.7 kB

  • Original 250.0 kB
  • After minification 250.0 kB
  • After compression 66.3 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 183.7 kB or 73% of the original size.

Requests Breakdown

Number of requests can be reduced by 37 (39%)

Requests Now

95

After Optimization

58

The browser has sent 95 CSS, Javascripts, AJAX and image requests in order to completely render the main page of STIB. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 27 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

stib.be accessibility score

72

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 input fields do not have accessible names

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

High

[aria-*] attributes do not have valid values

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

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

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

Best Practices

stib.be best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

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

stib.be SEO score

67

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

    FR

  • Language Claimed

    FR

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Stib.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 Stib.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

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