2.6 sec in total
453 ms
1.9 sec
179 ms
Visit teelen.nl now to see the best up-to-date Teelen content and also check out these interesting facts you probably never knew about teelen.nl
Wij zijn Teelen. Het is onze missie leren en toetsen beter, begrijpelijker en toegankelijker te maken in het VO, MBO, HO en bedrijfsleven.
Visit teelen.nlWe analyzed Teelen.nl page load time and found that the first response time was 453 ms and then it took 2.1 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.
teelen.nl performance score
name
value
score
weighting
Value4.8 s
11/100
10%
Value12.2 s
0/100
25%
Value11.6 s
4/100
10%
Value6,390 ms
0/100
30%
Value0.488
17/100
15%
Value15.6 s
6/100
10%
453 ms
199 ms
241 ms
108 ms
157 ms
Our browser made a total of 31 requests to load all elements on the main page. We found that 94% of them (29 requests) were addressed to the original Teelen.nl, 6% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1 sec) belongs to the original domain Teelen.nl.
Page size can be reduced by 24.2 kB (9%)
273.9 kB
249.7 kB
In fact, the total size of Teelen.nl main page is 273.9 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. 15% of websites need less resources to load. Images take 225.9 kB which makes up the majority of the site volume.
Potential reduce by 9.0 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. This page needs HTML code to be minified as it can gain 3.6 kB, which is 30% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 9.0 kB or 76% 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. Teelen images are well optimized though.
Potential reduce by 7.8 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 7.8 kB or 29% of the original size.
Potential reduce by 7.4 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. Teelen.nl needs all CSS files to be minified and compressed as it can save up to 7.4 kB or 81% of the original size.
We found no issues to fix!
30
30
The browser has sent 30 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Teelen. According to our analytics all requests are already optimized.
teelen.nl
453 ms
tk_main.css
199 ms
tk_general.js
241 ms
si-clear-children.js
108 ms
backcanvas.jpg
157 ms
backmain.jpg
538 ms
spacer.gif
153 ms
testvisionlogo01.jpg
285 ms
but_menuhome.jpg
195 ms
but_menuevenk.jpg
201 ms
but_menuprod.jpg
379 ms
but_menuvb.jpg
376 ms
but_menuminis.jpg
384 ms
but_menuvac.jpg
373 ms
but_menucon.jpg
517 ms
pijlpunt.gif
696 ms
pijlpunt_li.gif
607 ms
backright.jpg
688 ms
kasteel04_200.jpg
787 ms
toetsboekje03.jpg
829 ms
backfooter_index.jpg
1047 ms
ga.js
5 ms
__utm.gif
11 ms
but_menuhome_on.jpg
104 ms
but_menuevenk_over.jpg
104 ms
but_menuprod_over.jpg
108 ms
but_menuvb_over.jpg
103 ms
but_menuminis_over.jpg
113 ms
but_menuvac_over.jpg
100 ms
but_menucon_over.jpg
250 ms
but_menusmap_over.jpg
201 ms
teelen.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
[aria-*] attributes do not match their roles
[aria-hidden="true"] elements contain focusable descendents
ARIA input fields do not have accessible names
Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
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
Links do not have a discernible name
teelen.nl best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
teelen.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
Tap targets are not sized appropriately
NL
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Teelen.nl can be misinterpreted by Google and other search engines. Our service has detected that Dutch 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 Teelen.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.
teelen.nl
Open Graph description is not detected on the main page of Teelen. 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: