Tools & Wizards About Us
vandusseldorp.com screenshot

Report Summary

  • 39

    Performance

    Renders faster than
    59% of other websites

  • 71

    Accessibility

    Visual factors better than
    that of 37% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

vandusseldorp.com

Van Dusseldorp's Future of events | Monique van Dusseldorp | Substack

Page Load Speed

10.7 sec in total

First Response

260 ms

Resources Loaded

10.2 sec

Page Rendered

278 ms

vandusseldorp.com screenshot

About Website

Welcome to vandusseldorp.com homepage info - get ready to check Van Dusseldorp best content right away, or after learning these important things about vandusseldorp.com

An exploration of online & hybrid events - what they are and what they will be. Click to read Van Dusseldorp's Future of events, by Monique van Dusseldorp, a Substack publication with thousands o...

Visit vandusseldorp.com

Key Findings

We analyzed Vandusseldorp.com page load time and found that the first response time was 260 ms and then it took 10.5 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

vandusseldorp.com performance score

39

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.1 s

46/100

10%

LCP (Largest Contentful Paint)

Value6.5 s

9/100

25%

SI (Speed Index)

Value4.2 s

77/100

10%

TBT (Total Blocking Time)

Value800 ms

36/100

30%

CLS (Cumulative Layout Shift)

Value0.189

65/100

15%

TTI (Time to Interactive)

Value8.1 s

42/100

10%

Network Requests Diagram

futureofevents.substack.com

260 ms

main.css

147 ms

color_links.css

326 ms

main.css

322 ms

c41771aeccbb43fbbffbc4755e65c9be.min.js

409 ms

Our browser made a total of 25 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Vandusseldorp.com, 4% (1 request) were made to Futureofevents.substack.com and 4% (1 request) were made to Js.sentry-cdn.com. The less responsive or slowest element that took the longest time to load (9.5 sec) relates to the external source Substackcdn.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 261.6 kB (43%)

Content Size

607.3 kB

After Optimization

345.7 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Vandusseldorp.com main page is 607.3 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. 55% of websites need less resources to load. Images take 395.3 kB which makes up the majority of the site volume.

HTML Optimization

-90%

Potential reduce by 189.0 kB

  • Original 210.9 kB
  • After minification 209.3 kB
  • After compression 21.9 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 189.0 kB or 90% of the original size.

Image Optimization

-18%

Potential reduce by 72.6 kB

  • Original 395.3 kB
  • After minification 322.8 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. Obviously, Van Dusseldorp needs image optimization as it can save up to 72.6 kB or 18% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-1%

Potential reduce by 14 B

  • Original 1.1 kB
  • After minification 1.1 kB
  • After compression 1.1 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

We found no issues to fix!

Requests Now

24

After Optimization

24

  • Images
  • JavaScript
  • CSS

The browser has sent 24 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Van Dusseldorp. According to our analytics all requests are already optimized.

Network Requests Diagram

futureofevents.substack.com

futureofevents.substack.com

260 ms

main.css

main.css

147 ms

color_links.css

color_links.css

326 ms

main.css

main.css

322 ms

c41771aeccbb43fbbffbc4755e65c9be.min.js

c41771aeccbb43fbbffbc4755e65c9be.min.js

409 ms

main.bundle.js

main.bundle.js

608 ms

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290 ms

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381 ms

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684 ms

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585 ms

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583 ms

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5612 ms

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2827 ms

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9460 ms

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5003 ms

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574 ms

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576 ms

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739 ms

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773 ms

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1144 ms

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1012 ms

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1170 ms

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1219 ms

kg7XIQZEiiM

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1176 ms

bundle.min.js

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21 ms

Accessibility Review

vandusseldorp.com accessibility score

71

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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

vandusseldorp.com 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

vandusseldorp.com SEO score

83

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

High

Tap targets are not sized appropriately

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 Vandusseldorp.com 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 Vandusseldorp.com 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

vandusseldorp.com

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