Tools & Wizards About Us
sterren.nl screenshot

Report Summary

  • 32

    Performance

    Renders faster than
    52% of other websites

  • 89

    Accessibility

    Visual factors better than
    that of 71% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

sterren.nl

Sterren NL | De nummer 1 in Nederlandstalige muziek

Page Load Speed

2.5 sec in total

First Response

56 ms

Resources Loaded

1.9 sec

Page Rendered

528 ms

sterren.nl screenshot

About Website

Visit sterren.nl now to see the best up-to-date Sterren content and also check out these interesting facts you probably never knew about sterren.nl

NPO Sterren NL is DE plek voor muziek, nieuws, video's en acties van de allerbeste Nederlandse artiesten!

Visit sterren.nl

Key Findings

We analyzed Sterren.nl page load time and found that the first response time was 56 ms and then it took 2.4 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

sterren.nl performance score

32

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.4 s

71/100

10%

LCP (Largest Contentful Paint)

Value7.8 s

3/100

25%

SI (Speed Index)

Value5.6 s

53/100

10%

TBT (Total Blocking Time)

Value1,830 ms

9/100

30%

CLS (Cumulative Layout Shift)

Value0.018

100/100

15%

TTI (Time to Interactive)

Value15.0 s

8/100

10%

Network Requests Diagram

sterren.nl

56 ms

sterrennl

888 ms

111ed83414637e28.css

191 ms

polyfills-5cd94c89d3acac5f.js

372 ms

webpack-974ac8dd40facae9.js

282 ms

Our browser made a total of 37 requests to load all elements on the main page. We found that 3% of them (1 request) were addressed to the original Sterren.nl, 70% (26 requests) were made to Nporadio5.nl and 16% (6 requests) were made to Npo-artistdb.b-cdn.net. The less responsive or slowest element that took the longest time to load (934 ms) relates to the external source Npo-artistdb.b-cdn.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 154.2 kB (30%)

Content Size

508.9 kB

After Optimization

354.6 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Sterren.nl main page is 508.9 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. 40% of websites need less resources to load. Images take 388.0 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 95.4 kB

  • Original 118.5 kB
  • After minification 118.4 kB
  • After compression 23.0 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 95.4 kB or 81% of the original size.

Image Optimization

-15%

Potential reduce by 58.8 kB

  • Original 388.0 kB
  • After minification 329.2 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, Sterren needs image optimization as it can save up to 58.8 kB or 15% 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 32 B

  • Original 2.4 kB
  • After minification 2.4 kB
  • After compression 2.4 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 22 (63%)

Requests Now

35

After Optimization

13

  • Images
  • JavaScript
  • CSS

The browser has sent 35 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sterren. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 23 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

sterren.nl

sterren.nl

56 ms

sterrennl

sterrennl

888 ms

111ed83414637e28.css

111ed83414637e28.css

191 ms

polyfills-5cd94c89d3acac5f.js

polyfills-5cd94c89d3acac5f.js

372 ms

webpack-974ac8dd40facae9.js

webpack-974ac8dd40facae9.js

282 ms

framework-45ce3d09104a2cae.js

framework-45ce3d09104a2cae.js

389 ms

main-dbd15142bf3786bf.js

main-dbd15142bf3786bf.js

464 ms

_app-fa11d5f122ec0ddc.js

_app-fa11d5f122ec0ddc.js

648 ms

7b3ddd08-42b89039fcd123fb.js

7b3ddd08-42b89039fcd123fb.js

388 ms

e44137f9-e8cf7cd2f0cd4bfa.js

e44137f9-e8cf7cd2f0cd4bfa.js

427 ms

893ce3de-29266d1d9037f896.js

893ce3de-29266d1d9037f896.js

559 ms

4776-ea6235d9bc6dd3b1.js

4776-ea6235d9bc6dd3b1.js

562 ms

6808-928e8fd3c3cf1b1c.js

6808-928e8fd3c3cf1b1c.js

485 ms

8229-da3ae963132143cc.js

8229-da3ae963132143cc.js

614 ms

8596-b21f19d3b29595b6.js

8596-b21f19d3b29595b6.js

558 ms

6192-7326792576e01ff8.js

6192-7326792576e01ff8.js

567 ms

4286-83e28dc76d7b260f.js

4286-83e28dc76d7b260f.js

669 ms

4701-8259c02a79646d0e.js

4701-8259c02a79646d0e.js

670 ms

9855-c0d96049080056a5.js

9855-c0d96049080056a5.js

671 ms

index-1e123c966a485018.js

index-1e123c966a485018.js

672 ms

_buildManifest.js

_buildManifest.js

709 ms

_ssgManifest.js

_ssgManifest.js

740 ms

_middlewareManifest.js

_middlewareManifest.js

744 ms

3cu14pjbklsr-non-stop22.png

3cu14pjbklsr-non-stop22.png

687 ms

1997d7aa-d748-4067-b3f6-9ffa887ee394__Hartslag.jpg

1997d7aa-d748-4067-b3f6-9ffa887ee394__Hartslag.jpg

477 ms

dimml.js

dimml.js

293 ms

npo_sterrennl_logo.svg

npo_sterrennl_logo.svg

736 ms

avrotros_logo.svg

avrotros_logo.svg

755 ms

kafke-en-frans-bauer.jpeg

kafke-en-frans-bauer.jpeg

671 ms

3b9c0567-a0eb-451d-b24a-2dba26c0f695__MarcoSchuitmaker_SchaamJeVoorJeTranenNiet_3K_2024-04-01-205751_mfdw.jpg

3b9c0567-a0eb-451d-b24a-2dba26c0f695__MarcoSchuitmaker_SchaamJeVoorJeTranenNiet_3K_2024-04-01-205751_mfdw.jpg

908 ms

a9b020de-db36-4b8e-948e-6292e9e63b12__Django-Wagner-_-New-TImeless-Where-Is-The-Love_2024-04-01-210039_apfv.jpg

a9b020de-db36-4b8e-948e-6292e9e63b12__Django-Wagner-_-New-TImeless-Where-Is-The-Love_2024-04-01-210039_apfv.jpg

934 ms

fd442cf2-17ce-4f14-b2c2-0c996191fb64__Sieneke-Morgen-schijnt-weer-de-zon_2024-04-01-205747_webb.jpg

fd442cf2-17ce-4f14-b2c2-0c996191fb64__Sieneke-Morgen-schijnt-weer-de-zon_2024-04-01-205747_webb.jpg

914 ms

senna-kleine-vogel.jpeg

senna-kleine-vogel.jpeg

928 ms

blue-diamonds.webp

blue-diamonds.webp

551 ms

diamond.webp

diamond.webp

588 ms

735a66778a8024a61339aca057125c8a51383999.js

735a66778a8024a61339aca057125c8a51383999.js

385 ms

ccm-wrapper_v1.1.js

ccm-wrapper_v1.1.js

131 ms

Accessibility Review

sterren.nl accessibility score

89

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

button, link, and menuitem elements do not have accessible names.

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

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

sterren.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

Missing source maps for large first-party JavaScript

SEO Factors

sterren.nl SEO score

92

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

    NL

  • Language Claimed

    NL

  • Encoding

    UTF-8

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

sterren.nl

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