Tools & Wizards About Us

Report Summary

  • 37

    Performance

    Renders faster than
    56% of other websites

  • 69

    Accessibility

    Visual factors better than
    that of 34% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

uzbrussel.be

UZ Brussel - Universitair Ziekenhuis Brussel - UZ Brussel

Page Load Speed

25.1 sec in total

First Response

970 ms

Resources Loaded

23.5 sec

Page Rendered

628 ms

About Website

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

Het UZ Brussel is een universitair ziekenhuis met bijna 4.000 medewerkers. Met 721 ziekenhuisbedden is het UZ Brussel jaarlijks goed voor meer dan 30.000 opnames, bijna evenveel dagopnames, 360.000 ra...

Visit uzbrussel.be

Key Findings

We analyzed Uzbrussel.be page load time and found that the first response time was 970 ms and then it took 24.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster. Unfortunately, there were 12 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

uzbrussel.be performance score

37

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.0 s

1/100

10%

LCP (Largest Contentful Paint)

Value7.0 s

6/100

25%

SI (Speed Index)

Value13.1 s

2/100

10%

TBT (Total Blocking Time)

Value420 ms

66/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value127.0 s

0/100

10%

Network Requests Diagram

www.uzbrussel.be

970 ms

mentions.css

260 ms

main.css

261 ms

aui.css

730 ms

main.css

538 ms

Our browser made a total of 75 requests to load all elements on the main page. We found that 99% of them (74 requests) were addressed to the original Uzbrussel.be, 1% (1 request) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (20 sec) belongs to the original domain Uzbrussel.be.

Page Optimization Overview & Recommendations

Page size can be reduced by 2.1 MB (8%)

Content Size

26.5 MB

After Optimization

24.4 MB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Uzbrussel.be main page is 26.5 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. 35% of websites need less resources to load. Images take 25.9 MB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 175.1 kB

  • Original 202.4 kB
  • After minification 148.9 kB
  • After compression 27.4 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 53.6 kB, which is 26% 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 175.1 kB or 86% of the original size.

Image Optimization

-7%

Potential reduce by 1.8 MB

  • Original 25.9 MB
  • After minification 24.1 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. UZ Brussel images are well optimized though.

JavaScript Optimization

-25%

Potential reduce by 91.5 kB

  • Original 368.8 kB
  • After minification 368.8 kB
  • After compression 277.3 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 91.5 kB or 25% of the original size.

Requests Breakdown

Number of requests can be reduced by 28 (50%)

Requests Now

56

After Optimization

28

  • Images
  • JavaScript
  • CSS

The browser has sent 56 CSS, Javascripts, AJAX and image requests in order to completely render the main page of UZ Brussel. 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 14 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

uzbrussel.be accessibility score

69

Accessibility Issues

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

Image elements do not have [alt] attributes

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

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

uzbrussel.be 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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

uzbrussel.be SEO score

86

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

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

Language and Encoding

  • Language Detected

    NL

  • Language Claimed

    NL

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Uzbrussel.be can be misinterpreted by Google and other search engines. Our service has detected that Dutch is used on the page, and it matches the claimed language. Our system also found out that Uzbrussel.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 UZ Brussel. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: