5.4 sec in total
345 ms
4.4 sec
610 ms
Welcome to radio4.nl homepage info - get ready to check Radio 4 best content for Bulgaria right away, or after learning these important things about radio4.nl
Op de site van NPO Klassiek luister je online naar speellijsten en concerten met de mooiste klassieke muziek. Beluister jouw favoriete stukken.
Visit radio4.nlWe analyzed Radio4.nl page load time and found that the first response time was 345 ms and then it took 5 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.
radio4.nl performance score
name
value
score
weighting
Value3.5 s
33/100
10%
Value17.2 s
0/100
25%
Value8.4 s
18/100
10%
Value1,600 ms
12/100
30%
Value0.022
100/100
15%
Value16.2 s
5/100
10%
345 ms
551 ms
1065 ms
279 ms
407 ms
Our browser made a total of 33 requests to load all elements on the main page. We found that 3% of them (1 request) were addressed to the original Radio4.nl, 79% (26 requests) were made to Npoklassiek.nl and 6% (2 requests) were made to Cdn.dimml.io. The less responsive or slowest element that took the longest time to load (2.4 sec) relates to the external source Npoklassiek.nl.
Page size can be reduced by 117.3 kB (68%)
172.7 kB
55.4 kB
In fact, the total size of Radio4.nl main page is 172.7 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 144.1 kB which makes up the majority of the site volume.
Potential reduce by 117.3 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 117.3 kB or 81% of the original size.
Potential reduce by 0 B
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. Radio 4 images are well optimized though.
Potential reduce by 15 B
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.
Number of requests can be reduced by 21 (75%)
28
7
The browser has sent 28 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Radio 4. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 22 to 1 for JavaScripts and as a result speed up the page load time.
radio4.nl
345 ms
www.nporadio4.nl
551 ms
www.npoklassiek.nl
1065 ms
bddfc46514048583.css
279 ms
polyfills-5cd94c89d3acac5f.js
407 ms
webpack-a9504702ac2f31f1.js
320 ms
framework-45ce3d09104a2cae.js
2380 ms
main-81c7169cf043ff40.js
376 ms
_app-36a2f113b33ed800.js
1614 ms
7b3ddd08-42b89039fcd123fb.js
423 ms
e44137f9-e8cf7cd2f0cd4bfa.js
423 ms
893ce3de-29266d1d9037f896.js
565 ms
4776-ea6235d9bc6dd3b1.js
502 ms
6808-928e8fd3c3cf1b1c.js
519 ms
9682-4b7ecde4d8c311f2.js
610 ms
8596-b21f19d3b29595b6.js
598 ms
6192-3d5f00247525d742.js
774 ms
4286-83e28dc76d7b260f.js
659 ms
7914-d188f96cc4cb314f.js
694 ms
index-04b60413cb504b54.js
709 ms
_buildManifest.js
818 ms
_ssgManifest.js
820 ms
_middlewareManifest.js
896 ms
fvwcn7onl2n-passaggio-late-night-pieter-lex.jpg
523 ms
eyJidWNrZXQiOiJwcmVzdG8tY292ZXItaW1hZ2VzIiwia2V5IjoiOTYwNzEyMC4xLmpwZyIsImVkaXRzIjp7InJlc2l6ZSI6eyJ3aWR0aCI6OTAwfSwid2VicCI6eyJxdWFsaXR5Ijo2NX0sInRvRm9ybWF0Ijoid2VicCJ9LCJ.webp
591 ms
dimml.js
290 ms
npo-klassiek-logo.svg
776 ms
unknown_track_m.webp
817 ms
npo-klassiek-vorm.svg
707 ms
NPOSans-Regular.woff
740 ms
NPOSans-Bold.woff
677 ms
bdaf8b7df1e702439bff7f25345f37a51047a670.js
2 ms
ccm-wrapper_v1.1.js
110 ms
radio4.nl accessibility score
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
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
Buttons do not have an accessible name
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
radio4.nl best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Missing source maps for large first-party JavaScript
radio4.nl SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
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
Document uses legible font sizes
NL
NL
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Radio4.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 Radio4.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.
radio4.nl
Open Graph data is detected on the main page of Radio 4. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: