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platform21.nl screenshot

Report Summary

  • 92

    Performance

    Renders faster than
    92% of other websites

  • 75

    Accessibility

    Visual factors better than
    that of 41% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 58

    SEO

    Google-friendlier than
    20% of websites

platform21.nl

Platform 21 - Curatorial Cooking

Page Load Speed

3 sec in total

First Response

389 ms

Resources Loaded

2.4 sec

Page Rendered

203 ms

platform21.nl screenshot

About Website

Welcome to platform21.nl homepage info - get ready to check Platform 21 best content right away, or after learning these important things about platform21.nl

Curatorial Cooking

Visit platform21.nl

Key Findings

We analyzed Platform21.nl page load time and found that the first response time was 389 ms and then it took 2.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

platform21.nl performance score

92

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.2 s

79/100

10%

LCP (Largest Contentful Paint)

Value2.5 s

89/100

25%

SI (Speed Index)

Value2.8 s

96/100

10%

TBT (Total Blocking Time)

Value10 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value5.4 s

72/100

10%

Network Requests Diagram

platform21.nl

389 ms

platform21.nl

417 ms

jquery.min.js

9 ms

ddaccordion.js

99 ms

utils+link+menu+tooltip+imgzoomer+imgannotations_view+lightbox+dialog.css

197 ms

Our browser made a total of 31 requests to load all elements on the main page. We found that 87% of them (27 requests) were addressed to the original Platform21.nl, 6% (2 requests) were made to Ajax.googleapis.com and 6% (2 requests) were made to Ssl.google-analytics.com. The less responsive or slowest element that took the longest time to load (1.2 sec) belongs to the original domain Platform21.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 264.0 kB (14%)

Content Size

1.9 MB

After Optimization

1.7 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Platform21.nl main page is 1.9 MB. 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. Images take 1.6 MB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 23.7 kB

  • Original 31.4 kB
  • After minification 28.6 kB
  • After compression 7.7 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 23.7 kB or 76% of the original size.

Image Optimization

-2%

Potential reduce by 36.2 kB

  • Original 1.6 MB
  • After minification 1.5 MB

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. Platform 21 images are well optimized though.

JavaScript Optimization

-64%

Potential reduce by 195.6 kB

  • Original 305.8 kB
  • After minification 305.8 kB
  • After compression 110.2 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 195.6 kB or 64% of the original size.

CSS Optimization

-36%

Potential reduce by 8.4 kB

  • Original 23.1 kB
  • After minification 22.7 kB
  • After compression 14.7 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. Platform21.nl needs all CSS files to be minified and compressed as it can save up to 8.4 kB or 36% of the original size.

Requests Breakdown

Number of requests can be reduced by 8 (28%)

Requests Now

29

After Optimization

21

  • Images
  • JavaScript
  • CSS

The browser has sent 29 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Platform 21. 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

platform21.nl

platform21.nl

389 ms

platform21.nl

platform21.nl

417 ms

jquery.min.js

jquery.min.js

9 ms

ddaccordion.js

ddaccordion.js

99 ms

utils+link+menu+tooltip+imgzoomer+imgannotations_view+lightbox+dialog.css

utils+link+menu+tooltip+imgzoomer+imgannotations_view+lightbox+dialog.css

197 ms

gmaps.css

gmaps.css

283 ms

base+typography+style.css

base+typography+style.css

379 ms

mediaobjectfactory+winobject+qtobject+flashobject.js

mediaobjectfactory+winobject+qtobject+flashobject.js

283 ms

utils+rest+link+unlink+menu+tooltip+imgzoomer+imgannotations_view+lightbox+dialog.js

utils+rest+link+unlink+menu+tooltip+imgzoomer+imgannotations_view+lightbox+dialog.js

404 ms

jquery-ui.min.js

jquery-ui.min.js

13 ms

6306-429-605.png

6306-429-605.png

1174 ms

296-159-18-scale-.jpg

296-159-18-scale-.jpg

100 ms

6150-210-135-crop-.png

6150-210-135-crop-.png

376 ms

5708-210-135-crop-.png

5708-210-135-crop-.png

486 ms

4360-201-86-crop-.png

4360-201-86-crop-.png

97 ms

3794-210-135-crop-.png

3794-210-135-crop-.png

292 ms

4039-210-135-crop-.png

4039-210-135-crop-.png

376 ms

4009-210-135-crop-.jpg

4009-210-135-crop-.jpg

191 ms

6026-210-135-crop-.png

6026-210-135-crop-.png

391 ms

4315-210-135-crop-.jpg

4315-210-135-crop-.jpg

285 ms

5747-210-135-crop-.png

5747-210-135-crop-.png

564 ms

3293-210-135-crop-.jpg

3293-210-135-crop-.jpg

389 ms

6022-210-135-crop-.png

6022-210-135-crop-.png

562 ms

3796-210-135-crop-.jpg

3796-210-135-crop-.jpg

470 ms

6145-210-135-crop-.jpg

6145-210-135-crop-.jpg

487 ms

6149-210-135-crop-.png

6149-210-135-crop-.png

581 ms

button.png

button.png

556 ms

cr.png

cr.png

575 ms

ga.js

ga.js

20 ms

__utm.gif

__utm.gif

12 ms

print.css

print.css

99 ms

Accessibility Review

platform21.nl accessibility score

75

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.

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

Form elements do not have associated labels

Best Practices

platform21.nl best practices score

58

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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

platform21.nl SEO score

58

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

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Platform21.nl can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Platform21.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

platform21.nl

Open Graph description is not detected on the main page of Platform 21. 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: