Report Summary

  • 82

    Performance

    Renders faster than
    87% of other websites

  • 78

    Accessibility

    Visual factors better than
    that of 46% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

videocollege.tue.nl

Overzicht video colleges

Page Load Speed

11.2 sec in total

First Response

1.3 sec

Resources Loaded

4.2 sec

Page Rendered

5.7 sec

videocollege.tue.nl screenshot

About Website

Click here to check amazing Video College Tue content for Netherlands. Otherwise, check out these important facts you probably never knew about videocollege.tue.nl

Visit videocollege.tue.nl

Key Findings

We analyzed Videocollege.tue.nl page load time and found that the first response time was 1.3 sec and then it took 9.9 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

videocollege.tue.nl performance score

82

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.3 s

39/100

10%

LCP (Largest Contentful Paint)

Value3.3 s

69/100

25%

SI (Speed Index)

Value4.9 s

65/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.048

99/100

15%

TTI (Time to Interactive)

Value3.3 s

93/100

10%

Network Requests Diagram

videocollege.tue.nl

1300 ms

116 ms

749 ms

style.css

173 ms

logo.gif

339 ms

Our browser made a total of 6 requests to load all elements on the main page. We found that 33% of them (2 requests) were addressed to the original Videocollege.tue.nl, 67% (4 requests) were made to Sts.tue.nl. The less responsive or slowest element that took the longest time to load (1.3 sec) belongs to the original domain Videocollege.tue.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 72.0 kB (57%)

Content Size

126.2 kB

After Optimization

54.2 kB

In fact, the total size of Videocollege.tue.nl main page is 126.2 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. Only 10% of websites need less resources to load. Javascripts take 71.9 kB which makes up the majority of the site volume.

HTML Optimization

-71%

Potential reduce by 12.9 kB

  • Original 18.2 kB
  • After minification 17.2 kB
  • After compression 5.3 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 12.9 kB or 71% of the original size.

Image Optimization

-4%

Potential reduce by 962 B

  • Original 22.4 kB
  • After minification 21.5 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. Video College Tue images are well optimized though.

JavaScript Optimization

-66%

Potential reduce by 47.3 kB

  • Original 71.9 kB
  • After minification 71.9 kB
  • After compression 24.6 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 47.3 kB or 66% of the original size.

CSS Optimization

-79%

Potential reduce by 10.8 kB

  • Original 13.6 kB
  • After minification 8.2 kB
  • After compression 2.8 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. Videocollege.tue.nl needs all CSS files to be minified and compressed as it can save up to 10.8 kB or 79% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

3

After Optimization

3

The browser has sent 3 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Video College Tue. According to our analytics all requests are already optimized.

Accessibility Review

videocollege.tue.nl accessibility score

78

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.

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Some elements have a [tabindex] value greater than 0

Best Practices

videocollege.tue.nl 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

SEO Factors

videocollege.tue.nl SEO score

83

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Links do not have descriptive text

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

    N/A

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Videocollege.tue.nl can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else), while the claimed language is English. Our system also found out that Videocollege.tue.nl 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 description is not detected on the main page of Video College Tue. 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: