4.2 sec in total
370 ms
2 sec
1.8 sec
Click here to check amazing Theorie content for Netherlands. Otherwise, check out these important facts you probably never knew about theorie.nl
Leer en oefen voor je CBR theorie-examen bij Theorie.nl met onze online videocursus en oefenexamens. Wij helpen kandidaten al sinds 2001 met slagen!
Visit theorie.nlWe analyzed Theorie.nl page load time and found that the first response time was 370 ms and then it took 3.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.
theorie.nl performance score
name
value
score
weighting
Value2.3 s
74/100
10%
Value4.4 s
40/100
25%
Value3.1 s
93/100
10%
Value4,120 ms
1/100
30%
Value0.017
100/100
15%
Value11.1 s
20/100
10%
370 ms
32 ms
86 ms
171 ms
40 ms
Our browser made a total of 36 requests to load all elements on the main page. We found that 36% of them (13 requests) were addressed to the original Theorie.nl, 11% (4 requests) were made to Google-analytics.com and 6% (2 requests) were made to Bat.bing.com. The less responsive or slowest element that took the longest time to load (993 ms) belongs to the original domain Theorie.nl.
Page size can be reduced by 33.6 kB (22%)
151.4 kB
117.8 kB
In fact, the total size of Theorie.nl main page is 151.4 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. 45% of websites need less resources to load. Javascripts take 88.3 kB which makes up the majority of the site volume.
Potential reduce by 29.3 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 4.6 kB, which is 12% 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 29.3 kB or 77% of the original size.
Potential reduce by 893 B
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. This website has mostly compressed JavaScripts.
Potential reduce by 3.5 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. Theorie.nl needs all CSS files to be minified and compressed as it can save up to 3.5 kB or 14% of the original size.
Number of requests can be reduced by 16 (46%)
35
19
The browser has sent 35 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Theorie. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 17 to 1 for JavaScripts and as a result speed up the page load time.
theorie.nl
370 ms
css
32 ms
marketing.css
86 ms
modernizr-custom.min.js
171 ms
jquery.min.js
40 ms
marketing-min.js
334 ms
gtm.js
176 ms
icons.svg
186 ms
theorie-nl-logo-blue-subline.svg
291 ms
thuiswinkel-logo.svg
286 ms
kiyoh-logo-white.svg
290 ms
theorie-examen-gif.gif
993 ms
ideal-logo.svg
403 ms
paypal-logo.svg
401 ms
applepay-logo.svg
573 ms
kiyoh-logo-color.svg
571 ms
optimize.js
117 ms
analytics.js
69 ms
conversion_async.js
142 ms
bat.js
170 ms
hotjar-76948.js
221 ms
fbevents.js
144 ms
events.js
169 ms
collect
38 ms
collect
73 ms
72 ms
2279747322271743
112 ms
11026500.js
27 ms
ga-audiences
36 ms
11026500
155 ms
66 ms
modules.61e17720cf639c3e96a7.js
24 ms
box-69edcc3187336f9b0a3fbb4c73be9fe6.html
84 ms
clarity.js
22 ms
collect
4 ms
c.gif
61 ms
theorie.nl accessibility score
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
Buttons do not have an accessible name
Image elements do not have [alt] attributes
Links do not have a discernible name
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
theorie.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
Page has valid source maps
theorie.nl SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Image elements do not have [alt] attributes
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
NL
NL
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Theorie.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 Theorie.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.
theorie.nl
Open Graph data is detected on the main page of Theorie. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: