Tools & Wizards About Us

Report Summary

  • 31

    Performance

    Renders faster than
    51% of other websites

  • 93

    Accessibility

    Visual factors better than
    that of 80% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

abc.uva.nl

Amsterdam Brain and Cognition (ABC) - ABC - University of Amsterdam

Page Load Speed

3.9 sec in total

First Response

874 ms

Resources Loaded

2.7 sec

Page Rendered

359 ms

About Website

Click here to check amazing ABC Uva content for Netherlands. Otherwise, check out these important facts you probably never knew about abc.uva.nl

ABC (University of Amsterdam) is a research platform for cognitive sciences. ABC provides research and PhD grants and hosts events and lectures.

Visit abc.uva.nl

Key Findings

We analyzed Abc.uva.nl page load time and found that the first response time was 874 ms and then it took 3 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

abc.uva.nl performance score

31

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.3 s

18/100

10%

LCP (Largest Contentful Paint)

Value5.4 s

20/100

25%

SI (Speed Index)

Value7.1 s

31/100

10%

TBT (Total Blocking Time)

Value1,490 ms

14/100

30%

CLS (Cumulative Layout Shift)

Value0.051

99/100

15%

TTI (Time to Interactive)

Value10.7 s

22/100

10%

Network Requests Diagram

abc.uva.nl

874 ms

gtm.js

88 ms

app.min.css

298 ms

uvacookiebar.js

396 ms

app.js

546 ms

Our browser made a total of 20 requests to load all elements on the main page. We found that 70% of them (14 requests) were addressed to the original Abc.uva.nl, 10% (2 requests) were made to Cdnjs.cloudflare.com and 5% (1 request) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (1 sec) relates to the external source Analytics.ic.uva.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 246.8 kB (73%)

Content Size

339.6 kB

After Optimization

92.8 kB

  • HTML
  • JavaScript
  • CSS

In fact, the total size of Abc.uva.nl main page is 339.6 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. 25% of websites need less resources to load. Javascripts take 203.3 kB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 102.0 kB

  • Original 136.3 kB
  • After minification 130.0 kB
  • After compression 34.3 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 102.0 kB or 75% of the original size.

JavaScript Optimization

-71%

Potential reduce by 144.8 kB

  • Original 203.3 kB
  • After minification 203.3 kB
  • After compression 58.5 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 144.8 kB or 71% of the original size.

CSS Optimization

-0%

Potential reduce by 0 B

  • Original 5 B

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.

Requests Breakdown

Number of requests can be reduced by 13 (68%)

Requests Now

19

After Optimization

6

  • Images
  • JavaScript
  • CSS

The browser has sent 19 CSS, Javascripts, AJAX and image requests in order to completely render the main page of ABC Uva. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

abc.uva.nl accessibility score

93

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

Best Practices

abc.uva.nl 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

SEO Factors

abc.uva.nl SEO score

100

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

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Abc.uva.nl can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Abc.uva.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 ABC Uva. 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: