5.4 sec in total
651 ms
4 sec
764 ms
Click here to check amazing Cals content for Netherlands. Otherwise, check out these important facts you probably never knew about cals.nl
Het Cals: de groei van je leven. Op het Cals College Nieuwegein & Ijsselstein staan je mentor, docenten en leerlingbegeleiders altijd voor je klaar.
Visit cals.nlWe analyzed Cals.nl page load time and found that the first response time was 651 ms and then it took 4.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.
cals.nl performance score
name
value
score
weighting
Value5.9 s
4/100
10%
Value8.7 s
1/100
25%
Value6.7 s
36/100
10%
Value500 ms
58/100
30%
Value0
100/100
15%
Value7.7 s
45/100
10%
651 ms
208 ms
485 ms
473 ms
558 ms
Our browser made a total of 39 requests to load all elements on the main page. We found that 79% of them (31 requests) were addressed to the original Cals.nl, 5% (2 requests) were made to Connect.facebook.net and 5% (2 requests) were made to Facebook.com. The less responsive or slowest element that took the longest time to load (2.2 sec) belongs to the original domain Cals.nl.
Page size can be reduced by 805.3 kB (48%)
1.7 MB
869.0 kB
In fact, the total size of Cals.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. 40% of websites need less resources to load. Images take 662.2 kB which makes up the majority of the site volume.
Potential reduce by 42.4 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 42.4 kB or 77% of the original size.
Potential reduce by 66.0 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. Cals images are well optimized though.
Potential reduce by 187.0 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 187.0 kB or 58% of the original size.
Potential reduce by 510.0 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. Cals.nl needs all CSS files to be minified and compressed as it can save up to 510.0 kB or 80% of the original size.
Number of requests can be reduced by 23 (64%)
36
13
The browser has sent 36 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cals. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 14 to 1 for CSS and as a result speed up the page load time.
www.cals.nl
651 ms
sdk.js
208 ms
wp-emoji-release.min.js
485 ms
sbi-styles.min.css
473 ms
style.min.css
558 ms
a-z-listing-default.css
393 ms
style.min.css
657 ms
style.min.css
706 ms
style.min.css
669 ms
style.min.css
753 ms
style.min.css
846 ms
blocks.style.build.css
833 ms
dashicons.min.css
1105 ms
default.min.css
936 ms
tablepress-responsive.min.css
963 ms
main.min.css
1368 ms
aframe-v1.0.4.min.js
1713 ms
modernizr.min.js
1122 ms
jquery.min.js
209 ms
logo.svg
1192 ms
Banners-website-4.jpg
1535 ms
switcher_nieuwegein1.png
1523 ms
switcher_ijsselstein3.png
1982 ms
Diagram-onderwijs-Cals.png
2048 ms
sdk.js
50 ms
public.css
1792 ms
scripts.min.js
2042 ms
leaflet.js
2132 ms
leaflet.responsive.popup-min.js
2011 ms
public.js
2206 ms
126 ms
14 ms
analytics.js
145 ms
circle_striped.svg
474 ms
circle_red.svg
489 ms
2DC757_1_0.woff
469 ms
fontawesome-webfont.woff
639 ms
collect
14 ms
collect
67 ms
cals.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
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.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
cals.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
Missing source maps for large first-party JavaScript
cals.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
NL
NL
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Cals.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 Cals.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.
cals.nl
Open Graph data is detected on the main page of Cals. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: