Tools & Wizards About Us
fsw.leidenuniv.nl screenshot

Report Summary

  • 33

    Performance

    Renders faster than
    53% of other websites

  • 77

    Accessibility

    Visual factors better than
    that of 44% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 91

    SEO

    Google-friendlier than
    70% of websites

fsw.leidenuniv.nl

Welkom bij de Leidse Faculteit der Sociale Wetenschappen - Universiteit Leiden

Page Load Speed

3.1 sec in total

First Response

284 ms

Resources Loaded

2.6 sec

Page Rendered

227 ms

fsw.leidenuniv.nl screenshot

About Website

Visit fsw.leidenuniv.nl now to see the best up-to-date Fsw Leiden Univ content for Netherlands and also check out these interesting facts you probably never knew about fsw.leidenuniv.nl

In de Faculteit der Sociale Wetenschappen is de verwevenheid van onderzoek, onderwijs en impact vanzelfsprekend.

Visit fsw.leidenuniv.nl

Key Findings

We analyzed Fsw.leidenuniv.nl page load time and found that the first response time was 284 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

fsw.leidenuniv.nl performance score

33

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.1 s

46/100

10%

LCP (Largest Contentful Paint)

Value7.5 s

4/100

25%

SI (Speed Index)

Value4.2 s

78/100

10%

TBT (Total Blocking Time)

Value570 ms

52/100

30%

CLS (Cumulative Layout Shift)

Value0.498

16/100

15%

TTI (Time to Interactive)

Value13.5 s

11/100

10%

Network Requests Diagram

fsw.leidenuniv.nl

284 ms

fsw.leidenuniv.nl

454 ms

sociale-wetenschappen

490 ms

screen.css

281 ms

ul2.js

312 ms

Our browser made a total of 28 requests to load all elements on the main page. We found that 7% of them (2 requests) were addressed to the original Fsw.leidenuniv.nl, 89% (25 requests) were made to Universiteitleiden.nl and 4% (1 request) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (1.1 sec) relates to the external source Universiteitleiden.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 29.2 kB (51%)

Content Size

57.4 kB

After Optimization

28.2 kB

  • HTML
  • JavaScript

In fact, the total size of Fsw.leidenuniv.nl main page is 57.4 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. 35% of websites need less resources to load. HTML takes 36.4 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 29.2 kB

  • Original 36.4 kB
  • After minification 29.8 kB
  • After compression 7.2 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 6.6 kB, which is 18% 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 29.2 kB or 80% of the original size.

JavaScript Optimization

-0%

Potential reduce by 50 B

  • Original 21.0 kB
  • After minification 21.0 kB
  • After compression 20.9 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 3 (14%)

Requests Now

22

After Optimization

19

  • Images
  • JavaScript
  • CSS

The browser has sent 22 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Fsw Leiden Univ. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

fsw.leidenuniv.nl

fsw.leidenuniv.nl

284 ms

fsw.leidenuniv.nl

fsw.leidenuniv.nl

454 ms

sociale-wetenschappen

sociale-wetenschappen

490 ms

screen.css

screen.css

281 ms

ul2.js

ul2.js

312 ms

gtm.js

gtm.js

75 ms

zegel.png

zegel.png

101 ms

d1180x250

d1180x250

821 ms

onze-opleidingen.png

onze-opleidingen.png

832 ms

wij-zijn-fsw.png

wij-zijn-fsw.png

1020 ms

ons-onderzoek.png

ons-onderzoek.png

1068 ms

d50x50

d50x50

299 ms

d50x50

d50x50

296 ms

d50x50

d50x50

393 ms

d50x50

d50x50

395 ms

d50x50

d50x50

491 ms

d50x50

d50x50

492 ms

d50x50

d50x50

590 ms

d50x50

d50x50

590 ms

d50x50

d50x50

688 ms

d50x50

d50x50

685 ms

d50x50

d50x50

795 ms

world-map.png

world-map.png

858 ms

vestulapro-semibold.woff

vestulapro-semibold.woff

915 ms

vestulapro-regular.woff

vestulapro-regular.woff

932 ms

fontello.woff

fontello.woff

855 ms

jquery.js

jquery.js

895 ms

main.js

main.js

95 ms

Accessibility Review

fsw.leidenuniv.nl accessibility score

77

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

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.

Best Practices

fsw.leidenuniv.nl best practices score

83

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

SEO Factors

fsw.leidenuniv.nl SEO score

91

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

robots.txt is not valid

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

    NL

  • Language Claimed

    NL

  • Encoding

    UTF-8

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

fsw.leidenuniv.nl

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