Tools & Wizards About Us

Report Summary

  • 69

    Performance

    Renders faster than
    80% of other websites

  • 87

    Accessibility

    Visual factors better than
    that of 66% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

joukevandijk.nl

Jouke van Dijk

Page Load Speed

1.6 sec in total

First Response

502 ms

Resources Loaded

1 sec

Page Rendered

55 ms

About Website

Click here to check amazing Jouke Van Dijk content. Otherwise, check out these important facts you probably never knew about joukevandijk.nl

Jouke van Dijk Hoogleraar Regionale Arbeidsmarktanalyse Professor of Regional Labour Market Analysis

Visit joukevandijk.nl

Key Findings

We analyzed Joukevandijk.nl page load time and found that the first response time was 502 ms and then it took 1.1 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 25% of websites can load faster.

Performance Metrics

joukevandijk.nl performance score

69

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.4 s

70/100

10%

LCP (Largest Contentful Paint)

Value5.9 s

14/100

25%

SI (Speed Index)

Value3.5 s

88/100

10%

TBT (Total Blocking Time)

Value30 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value7.4 s

48/100

10%

Network Requests Diagram

www.joukevandijk.com

502 ms

minified.js

32 ms

focus-within-polyfill.js

29 ms

polyfill.min.js

24 ms

thunderbolt-commons.2ae1974e.bundle.min.js

20 ms

Our browser made a total of 35 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Joukevandijk.nl, 34% (12 requests) were made to Sentry-next.wixpress.com and 11% (4 requests) were made to Static.wixstatic.com. The less responsive or slowest element that took the longest time to load (502 ms) relates to the external source Joukevandijk.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 303.0 kB (45%)

Content Size

675.2 kB

After Optimization

372.2 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Joukevandijk.nl main page is 675.2 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. 30% of websites need less resources to load. HTML takes 346.6 kB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 254.9 kB

  • Original 346.6 kB
  • After minification 345.0 kB
  • After compression 91.7 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 254.9 kB or 74% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 35.8 kB
  • After minification 35.8 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. Jouke Van Dijk images are well optimized though.

JavaScript Optimization

-16%

Potential reduce by 48.1 kB

  • Original 292.8 kB
  • After minification 292.8 kB
  • After compression 244.7 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 48.1 kB or 16% of the original size.

Requests Breakdown

Number of requests can be reduced by 10 (53%)

Requests Now

19

After Optimization

9

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 19 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jouke Van Dijk. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

joukevandijk.nl accessibility score

87

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

joukevandijk.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

High

Page has valid source maps

SEO Factors

joukevandijk.nl SEO score

93

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

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

    NL

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Joukevandijk.nl can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it does not match the claimed Dutch language. Our system also found out that Joukevandijk.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 data is detected on the main page of Jouke Van Dijk. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: