Access onlineklas.nl. Uitgeverij Onlineklas | Digitaal leren in het basisonderwijs

Report Summary

About Website

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

Onlineklas is een multimediale uitgeverij met een digitale leeromgeving en lesmethodes voor het basisonderwijs, zoals de zaakvakkenmethode TopOndernemers.

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name

value

score

weighting

FCP (First Contentful Paint)

Value2.7 s

61/100

10%

LCP (Largest Contentful Paint)

Value6.1 s

12/100

25%

SI (Speed Index)

Value5.8 s

50/100

10%

TBT (Total Blocking Time)

Value870 ms

33/100

30%

CLS (Cumulative Layout Shift)

Value0.157

74/100

15%

TTI (Time to Interactive)

Value15.4 s

7/100

10%

onlineklas.nl

398 ms

www.onlineklas.info

121 ms

originTrials.41d7301a.bundle.min.js

39 ms

minified.js

42 ms

focus-within-polyfill.js

38 ms

Our browser made a total of 41 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Onlineklas.nl, 44% (18 requests) were made to Static.parastorage.com and 29% (12 requests) were made to Static.wixstatic.com. The less responsive or slowest element that took the longest time to load (1.2 sec) relates to the external source Polyfill-fastly.io.

Content Size

1.4 MB

After Optimization

484.7 kB

In fact, the total size of Onlineklas.nl main page is 1.4 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. 30% of websites need less resources to load. HTML takes 1.0 MB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 824.8 kB

Original 1.0 MB
After minification 1.0 MB
After compression 192.4 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 824.8 kB or 81% of the original size.

Image Optimization

-2%

Potential reduce by 1.1 kB

Original 56.4 kB
After minification 55.3 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. Onlineklas images are well optimized though.

JavaScript Optimization

-17%

Potential reduce by 48.2 kB

Original 285.2 kB
After minification 285.1 kB
After compression 237.0 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 48.2 kB or 17% of the original size.

Requests Now

After Optimization

The browser has sent 28 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Onlineklas. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Issues

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.

High

Buttons do not have an accessible name

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

These are opportunities to improve keyboard navigation in your application.

High

Heading elements are not in a sequentially-descending order

Areas of Improvement

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

Low

Detected JavaScript libraries

High

Page has valid source maps

Search Engine Optimization Advices

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/).

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

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 Onlineklas.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 Onlineklas.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

onlineklas.nl

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

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Performance

Accessibility

Best Practices

SEO

Uitgeverij Onlineklas | Digitaal leren in het basisonderwijs | Overijssel

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)