3.2 sec in total
224 ms
2.8 sec
191 ms
Click here to check amazing DUO content for Netherlands. Otherwise, check out these important facts you probably never knew about duo.nl
Informatie voor studenten, terugbetalers en leraren. Informatie over studiefinanciering, studieschuld, reizen, lesgeld, diploma’s en staatsexamens.
Visit duo.nlWe analyzed Duo.nl page load time and found that the first response time was 224 ms and then it took 2.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.
duo.nl performance score
name
value
score
weighting
Value4.9 s
10/100
10%
Value6.1 s
12/100
25%
Value7.1 s
31/100
10%
Value1,280 ms
18/100
30%
Value0.008
100/100
15%
Value9.3 s
31/100
10%
224 ms
271 ms
281 ms
372 ms
375 ms
Our browser made a total of 32 requests to load all elements on the main page. We found that 97% of them (31 requests) were addressed to the original Duo.nl, 3% (1 request) were made to Collectie.duostats.nl. The less responsive or slowest element that took the longest time to load (734 ms) belongs to the original domain Duo.nl.
Page size can be reduced by 370.7 kB (24%)
1.6 MB
1.2 MB
In fact, the total size of Duo.nl main page is 1.6 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. 20% of websites need less resources to load. Images take 1.1 MB which makes up the majority of the site volume.
Potential reduce by 9.9 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 2.8 kB, which is 21% 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 9.9 kB or 77% of the original size.
Potential reduce by 7.4 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. DUO images are well optimized though.
Potential reduce by 298.7 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 298.7 kB or 81% of the original size.
Potential reduce by 54.7 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. Duo.nl needs all CSS files to be minified and compressed as it can save up to 54.7 kB or 85% of the original size.
Number of requests can be reduced by 12 (48%)
25
13
The browser has sent 25 CSS, Javascripts, AJAX and image requests in order to completely render the main page of DUO. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.
224 ms
all.css
271 ms
homepage.css
281 ms
respdesignAll.css
372 ms
respdesignHome.css
375 ms
font.css
374 ms
modernizr.js
382 ms
jquery.js
734 ms
jquery-migrate.js
377 ms
slideout.js
380 ms
generiek.js
413 ms
feedback.js
412 ms
changephoto.js
468 ms
piwik.js
469 ms
PageLogo.png
172 ms
digid40x40.png
175 ms
ROsanswebtextregular_woff.woff
334 ms
ROsanswebtextbold_woff.woff
453 ms
fontawesome_woff.woff
453 ms
ROserifwebbold_woff.woff
434 ms
ROserifwebregular_woff.woff
498 ms
ROsanswebtextitalic_woff.woff
502 ms
mbo-a.jpg
188 ms
international-a.jpg
368 ms
scholier-a.jpg
280 ms
ouder-a.jpg
278 ms
leraar-a.jpg
351 ms
Terugbetaler2.jpg
262 ms
staatex_A.jpg
387 ms
hbo-wo-a.jpg
538 ms
piwik.min.js
368 ms
piwik.php
526 ms
duo.nl accessibility score
duo.nl best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Page has valid source maps
duo.nl SEO score
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 Duo.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 Duo.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.
duo.nl
Open Graph description is not detected on the main page of DUO. 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: