4.7 sec in total
1.3 sec
3.1 sec
317 ms
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Chris van Tienhoven - Mathematics
Visit chrisvantienhoven.nlWe analyzed Chrisvantienhoven.nl page load time and found that the first response time was 1.3 sec and then it took 3.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.
chrisvantienhoven.nl performance score
name
value
score
weighting
Value7.1 s
1/100
10%
Value8.5 s
2/100
25%
Value7.9 s
23/100
10%
Value150 ms
95/100
30%
Value0.169
70/100
15%
Value9.3 s
32/100
10%
1315 ms
187 ms
192 ms
200 ms
214 ms
Our browser made a total of 58 requests to load all elements on the main page. We found that 67% of them (39 requests) were addressed to the original Chrisvantienhoven.nl, 7% (4 requests) were made to Google-analytics.com and 5% (3 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (1.3 sec) belongs to the original domain Chrisvantienhoven.nl.
Page size can be reduced by 717.1 kB (64%)
1.1 MB
406.8 kB
In fact, the total size of Chrisvantienhoven.nl main page is 1.1 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. 50% of websites need less resources to load. Javascripts take 537.8 kB which makes up the majority of the site volume.
Potential reduce by 38.8 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 38.8 kB or 82% of the original size.
Potential reduce by 111.3 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. Obviously, Chrisvantienhoven needs image optimization as it can save up to 111.3 kB or 35% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 378.6 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 378.6 kB or 70% of the original size.
Potential reduce by 188.4 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. Chrisvantienhoven.nl needs all CSS files to be minified and compressed as it can save up to 188.4 kB or 86% of the original size.
Number of requests can be reduced by 40 (74%)
54
14
The browser has sent 54 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Chrisvantienhoven. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 25 to 1 for JavaScripts and from 12 to 1 for CSS and as a result speed up the page load time.
chrisvantienhoven.nl
1315 ms
phocadownload.css
187 ms
phocadownload.css
192 ms
bootstrap.css
200 ms
template.css
214 ms
bootstrap-responsive.css
207 ms
template-responsive.css
211 ms
megamenu.css
287 ms
megamenu-responsive.css
289 ms
off-canvas.css
301 ms
system.css
308 ms
mootools-core.js
403 ms
mootools-more.js
501 ms
core.js
392 ms
caption.js
393 ms
jquery.min.js
7 ms
jquery-noconflict.js
393 ms
jquery-migrate.min.js
409 ms
jdownloadurl.js
497 ms
extrawatch.js
497 ms
heatmap.js
498 ms
bootstrap.js
514 ms
jquery.tap.min.js
517 ms
off-canvas.js
602 ms
script.js
598 ms
menu.js
603 ms
responsive.js
592 ms
html5.js
23 ms
respond.min.js
622 ms
template.js
646 ms
counter.js
7 ms
system.css
391 ms
powr.min.js
170 ms
all.js
169 ms
analytics.js
66 ms
personal3.png
292 ms
nav_active.png
291 ms
navparent.png
113 ms
EngelseVlag.jpg
115 ms
NL.png
114 ms
QA-QG-QL-Centroids-01.png
246 ms
Rooftiles.jpg
289 ms
PerspectivischVeld-06.gif
245 ms
collect
26 ms
agent.js
109 ms
collect
20 ms
collect
20 ms
t.php
168 ms
webfont.js
78 ms
t.php
158 ms
css
62 ms
chrisvantienhoven.nl
681 ms
110 ms
xd_arbiter.php
145 ms
xd_arbiter.php
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cJZKeOuBrn4kERxqtaUH3T8E0i7KZn-EPnyo3HZu7kw.woff
14 ms
DXI1ORHCpsQm3Vp6mXoaTXhCUOGz7vYGh680lGh-uXM.woff
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MTP_ySUJH_bn48VBG8sNSnhCUOGz7vYGh680lGh-uXM.woff
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chrisvantienhoven.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
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.
chrisvantienhoven.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
General
Impact
Issue
Detected JavaScript libraries
chrisvantienhoven.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
EN
NL
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Chrisvantienhoven.nl can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it does not match the claimed Dutch language. Our system also found out that Chrisvantienhoven.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.
chrisvantienhoven.nl
Open Graph description is not detected on the main page of Chrisvantienhoven. 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: