Tools & Wizards About Us
oefenen.nl screenshot

Report Summary

  • 30

    Performance

    Renders faster than
    50% of other websites

  • 92

    Accessibility

    Visual factors better than
    that of 78% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 88

    SEO

    Google-friendlier than
    65% of websites

oefenen.nl

Oefenen.nl

Page Load Speed

2.6 sec in total

First Response

367 ms

Resources Loaded

1.9 sec

Page Rendered

315 ms

oefenen.nl screenshot

About Website

Welcome to oefenen.nl homepage info - get ready to check Oefenen best content for Netherlands right away, or after learning these important things about oefenen.nl

Oefen met lezen, schrijven, rekenen en internetten. Leer tegelijkertijd over onderwerpen als werk, opvoeding, gezondheid en omgaan met geld. Populaire leerprogramma’s zijn Lees en Schrijf!, Taalklas.n...

Visit oefenen.nl

Key Findings

We analyzed Oefenen.nl page load time and found that the first response time was 367 ms and then it took 2.2 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

oefenen.nl performance score

30

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.8 s

26/100

10%

LCP (Largest Contentful Paint)

Value10.8 s

0/100

25%

SI (Speed Index)

Value5.2 s

59/100

10%

TBT (Total Blocking Time)

Value1,580 ms

12/100

30%

CLS (Cumulative Layout Shift)

Value0.091

92/100

15%

TTI (Time to Interactive)

Value8.1 s

41/100

10%

Network Requests Diagram

oefenen.nl

367 ms

oefenen.nl

391 ms

uc.js

116 ms

style.css

181 ms

rateit.css

260 ms

Our browser made a total of 56 requests to load all elements on the main page. We found that 68% of them (38 requests) were addressed to the original Oefenen.nl, 18% (10 requests) were made to Fonts.gstatic.com and 5% (3 requests) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (629 ms) belongs to the original domain Oefenen.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 180.9 kB (11%)

Content Size

1.7 MB

After Optimization

1.5 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Oefenen.nl main page is 1.7 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. 50% of websites need less resources to load. Images take 1.4 MB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 13.6 kB

  • Original 18.3 kB
  • After minification 16.7 kB
  • After compression 4.7 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 13.6 kB or 74% of the original size.

Image Optimization

-5%

Potential reduce by 71.2 kB

  • Original 1.4 MB
  • After minification 1.3 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. Oefenen images are well optimized though.

JavaScript Optimization

-38%

Potential reduce by 90.6 kB

  • Original 235.6 kB
  • After minification 235.6 kB
  • After compression 145.0 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 90.6 kB or 38% of the original size.

CSS Optimization

-12%

Potential reduce by 5.5 kB

  • Original 47.2 kB
  • After minification 47.2 kB
  • After compression 41.7 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. Oefenen.nl needs all CSS files to be minified and compressed as it can save up to 5.5 kB or 12% of the original size.

Requests Breakdown

Number of requests can be reduced by 29 (66%)

Requests Now

44

After Optimization

15

  • Images
  • JavaScript
  • CSS

The browser has sent 44 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Oefenen. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 16 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

oefenen.nl

oefenen.nl

367 ms

oefenen.nl

oefenen.nl

391 ms

uc.js

uc.js

116 ms

style.css

style.css

181 ms

rateit.css

rateit.css

260 ms

css

css

39 ms

css2

css2

56 ms

css2

css2

57 ms

style2016.css

style2016.css

264 ms

jquery-3.6.0.min.js

jquery-3.6.0.min.js

353 ms

jquery.cookie.js

jquery.cookie.js

264 ms

all.min.css

all.min.css

368 ms

layout-new.css

layout-new.css

272 ms

flashvideo.js

flashvideo.js

350 ms

login.js

login.js

367 ms

dialog.js

dialog.js

366 ms

jquery.rateit.js

jquery.rateit.js

373 ms

sorter.js

sorter.js

439 ms

lucide.min.js

lucide.min.js

541 ms

portal.js

portal.js

444 ms

jomi_html5.js

jomi_html5.js

446 ms

menu.js

menu.js

450 ms

js

js

78 ms

element.js

element.js

52 ms

gtm.js

gtm.js

70 ms

fbevents.js

fbevents.js

70 ms

align-justify.svg

align-justify.svg

121 ms

logo_RGB.svg

logo_RGB.svg

120 ms

homepage-header2.jpg

homepage-header2.jpg

629 ms

kader.png

kader.png

120 ms

taal_oefenen.jpg

taal_oefenen.jpg

183 ms

computer_en_internet_2.jpg

computer_en_internet_2.jpg

262 ms

rekenen_en_geld.jpg

rekenen_en_geld.jpg

296 ms

gezond_leven.jpg

gezond_leven.jpg

383 ms

samenleving.jpg

samenleving.jpg

388 ms

wil.jpeg

wil.jpeg

359 ms

sedika.jpeg

sedika.jpeg

520 ms

mario.jpeg

mario.jpeg

471 ms

icon-facebook.png

icon-facebook.png

450 ms

icon-x.svg

icon-x.svg

473 ms

icon-instagram.png

icon-instagram.png

479 ms

icon-youtube-1.png

icon-youtube-1.png

539 ms

icon-linkedin.png

icon-linkedin.png

561 ms

anbi.png

anbi.png

565 ms

dutch_flag.svg

dutch_flag.svg

570 ms

AMODz4SDuXOMCPfdoglY9JQuWHBGG0X45DmqkmFRCE4.ttf

AMODz4SDuXOMCPfdoglY9JQuWHBGG0X45DmqkmFRCE4.ttf

87 ms

AMODz4SDuXOMCPfdoglY9JQuWHBGG0X45DmqklNRCE4.ttf

AMODz4SDuXOMCPfdoglY9JQuWHBGG0X45DmqklNRCE4.ttf

108 ms

AMODz4SDuXOMCPfdoglY9JQuWHBGG0X45Dmqkr9WCE4.ttf

AMODz4SDuXOMCPfdoglY9JQuWHBGG0X45Dmqkr9WCE4.ttf

120 ms

AMODz4SDuXOMCPfdoglY9JQuWHBGG0X45DmqkoZWCE4.ttf

AMODz4SDuXOMCPfdoglY9JQuWHBGG0X45DmqkoZWCE4.ttf

157 ms

AMODz4SDuXOMCPfdoglY9JQuWHBGG0X45DmqkuFWCE4.ttf

AMODz4SDuXOMCPfdoglY9JQuWHBGG0X45DmqkuFWCE4.ttf

99 ms

AMOFz4SDuXOMCPfdoglY9JQEUUK5wyyTfpeth6kSPgrsnQ.ttf

AMOFz4SDuXOMCPfdoglY9JQEUUK5wyyTfpeth6kSPgrsnQ.ttf

170 ms

AMOFz4SDuXOMCPfdoglY9JQEUUK5wyyTfpeth6kSBwrsnQ.ttf

AMOFz4SDuXOMCPfdoglY9JQEUUK5wyyTfpeth6kSBwrsnQ.ttf

164 ms

AMOFz4SDuXOMCPfdoglY9JQEUUK5wyyTfpeth6kSYArsnQ.ttf

AMOFz4SDuXOMCPfdoglY9JQEUUK5wyyTfpeth6kSYArsnQ.ttf

183 ms

AMOFz4SDuXOMCPfdoglY9JQEUUK5wyyTfpeth6kS0g3snQ.ttf

AMOFz4SDuXOMCPfdoglY9JQEUUK5wyyTfpeth6kS0g3snQ.ttf

144 ms

AMOFz4SDuXOMCPfdoglY9JQEUUK5wyyTfpeth6kS4A3snQ.ttf

AMOFz4SDuXOMCPfdoglY9JQEUUK5wyyTfpeth6kS4A3snQ.ttf

174 ms

videooverlay.png

videooverlay.png

501 ms

Accessibility Review

oefenen.nl accessibility score

92

Accessibility Issues

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

Links do not have a discernible name

Best Practices

oefenen.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

Page has valid source maps

SEO Factors

oefenen.nl SEO score

88

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

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    NL

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Oefenen.nl can be misinterpreted by Google and other search engines. Our service has detected that Dutch is used on the page, and it does not match the claimed English language. Our system also found out that Oefenen.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

oefenen.nl

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