5.4 sec in total
452 ms
4.4 sec
535 ms
Visit t-atrium.nl now to see the best up-to-date T Atrium content for Netherlands and also check out these interesting facts you probably never knew about t-atrium.nl
Op 't Atrium kies je voor mavo, havo, vwo, Xplore, Atrium International of Sportklas. Jij vertrekt na je schooltijd op ‘t Atrium als een wereldwijze burger.
Visit t-atrium.nlWe analyzed T-atrium.nl page load time and found that the first response time was 452 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.
t-atrium.nl performance score
name
value
score
weighting
Value3.8 s
28/100
10%
Value13.3 s
0/100
25%
Value8.1 s
20/100
10%
Value130 ms
96/100
30%
Value0.196
63/100
15%
Value10.3 s
25/100
10%
452 ms
159 ms
162 ms
163 ms
328 ms
Our browser made a total of 50 requests to load all elements on the main page. We found that all of those requests were addressed to T-atrium.nl and no external sources were called. The less responsive or slowest element that took the longest time to load (2.8 sec) belongs to the original domain T-atrium.nl.
Page size can be reduced by 682.1 kB (11%)
6.2 MB
5.5 MB
In fact, the total size of T-atrium.nl main page is 6.2 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. 25% of websites need less resources to load. Images take 5.6 MB which makes up the majority of the site volume.
Potential reduce by 11.5 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 11.5 kB or 72% of the original size.
Potential reduce by 246.2 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. T Atrium images are well optimized though.
Potential reduce by 348.0 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 348.0 kB or 71% of the original size.
Potential reduce by 76.3 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. T-atrium.nl needs all CSS files to be minified and compressed as it can save up to 76.3 kB or 83% of the original size.
Number of requests can be reduced by 14 (29%)
49
35
The browser has sent 49 CSS, Javascripts, AJAX and image requests in order to completely render the main page of T Atrium. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.
t-atrium.nl
452 ms
jcemediabox.css
159 ms
style.css
162 ms
slideshow.min.css
163 ms
jcemediabox.js
328 ms
mootools-core.js
404 ms
core.js
979 ms
mootools-more.js
642 ms
slideshow.min.js
321 ms
system.css
244 ms
general.css
325 ms
template.css
566 ms
template.responsive.css
427 ms
jquery.js
569 ms
script.js
484 ms
script.responsive.js
487 ms
system.css
82 ms
popup.html
83 ms
tooltip.html
84 ms
block.png
82 ms
Amsterdam.jpg
464 ms
Debat.jpg
465 ms
Fietsen.jpg
468 ms
Kano.jpg
601 ms
Sciencemeisjes.jpg
769 ms
Studeermeisje.jpg
573 ms
Uitwisseling.jpg
631 ms
hout_snijden.jpg
726 ms
jongenin2dekamer.jpg
730 ms
jongensierland.jpg
829 ms
kaart.jpg
934 ms
klei.jpg
804 ms
meisjesmetvliegtuig.jpg
908 ms
mensen_voor_bord.jpg
912 ms
natuurkunde.jpg
1462 ms
saltojongens.jpg
966 ms
theatermensen.jpg
1017 ms
tweetalig.jpg
1069 ms
verhoofd_2.0.jpg
1083 ms
vliegtuigwatniksmethetatriumtemakenheeft.jpg
1103 ms
zwemmendeMeisjes.jpg
1129 ms
blockheader.png
1099 ms
blockheadericon.png
1148 ms
blockbullets.png
1162 ms
p1010357.jpg
1529 ms
p1010351.jpg
2752 ms
DSC_0605.jpg
1209 ms
footer.png
1227 ms
footerrssicon.png
1241 ms
loader.png
84 ms
t-atrium.nl accessibility score
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
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
t-atrium.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
User Experience
Impact
Issue
Displays images with incorrect aspect ratio
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Page has valid source maps
t-atrium.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
NL
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise T-atrium.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 T-atrium.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.
t-atrium.nl
Open Graph description is not detected on the main page of T Atrium. 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: