4.1 sec in total
285 ms
3.6 sec
278 ms
Click here to check amazing Proefdiervrij content for Netherlands. Otherwise, check out these important facts you probably never knew about proefdiervrij.nl
Nieuwsbrief Ontdek alles over proefdieren en vooral hoe we ze overbodig kunnen maken. In onze nieuwsbrief lees je als eerste de ontwikkelingen, feitjes en unieke verhalen over proefdiervrij onderzoek....
Visit proefdiervrij.nlWe analyzed Proefdiervrij.nl page load time and found that the first response time was 285 ms and then it took 3.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.
proefdiervrij.nl performance score
name
value
score
weighting
Value4.4 s
17/100
10%
Value21.2 s
0/100
25%
Value16.5 s
0/100
10%
Value1,200 ms
20/100
30%
Value0.433
22/100
15%
Value21.4 s
1/100
10%
285 ms
1994 ms
93 ms
184 ms
263 ms
Our browser made a total of 56 requests to load all elements on the main page. We found that 84% of them (47 requests) were addressed to the original Proefdiervrij.nl, 4% (2 requests) were made to Google-analytics.com and 2% (1 request) were made to Ajax.googleapis.com. The less responsive or slowest element that took the longest time to load (2 sec) belongs to the original domain Proefdiervrij.nl.
Page size can be reduced by 322.5 kB (29%)
1.1 MB
779.0 kB
In fact, the total size of Proefdiervrij.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. 30% of websites need less resources to load. Images take 656.6 kB which makes up the majority of the site volume.
Potential reduce by 30.8 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 30.8 kB or 78% of the original size.
Potential reduce by 35.6 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. Proefdiervrij images are well optimized though.
Potential reduce by 172.1 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 172.1 kB or 56% of the original size.
Potential reduce by 83.9 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. Proefdiervrij.nl needs all CSS files to be minified and compressed as it can save up to 83.9 kB or 86% of the original size.
Number of requests can be reduced by 31 (61%)
51
20
The browser has sent 51 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Proefdiervrij. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 19 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.
proefdiervrij.nl
285 ms
proefdiervrij.nl
1994 ms
normalize.css
93 ms
style.css
184 ms
donation.css
263 ms
modernizr-2.8.3.min.js
266 ms
jquery.min.js
16 ms
jquery.flexslider-min.js
299 ms
jquery.validate.min.js
301 ms
jquery.maskedinput-1.4.js
302 ms
icheck.min.js
298 ms
jquery.cookie.js
349 ms
plugins.js
353 ms
main.js
364 ms
styles.css
363 ms
style.css
458 ms
shortcodes.css
372 ms
jquery.js
529 ms
jquery-migrate.min.js
439 ms
script.js
452 ms
jquery.form.min.js
454 ms
scripts.js
454 ms
skip-link-focus-fix.js
549 ms
wp-embed.min.js
576 ms
wp-emoji-release.min.js
206 ms
analytics.js
14 ms
collect
12 ms
collect
132 ms
bad00dd6-be2f-4cf4-a06e-fa05b0481f21.gif
711 ms
YM7FOYez_normal.jpg
85 ms
background.gif
117 ms
btn-search-submit.png
117 ms
logo-proefdiervrij-5.jpg
200 ms
theme-info.png
112 ms
sanguin2.jpg
565 ms
Biobank-Vries2.jpg
745 ms
bg-col-home.png
199 ms
icon-calendar.png
207 ms
icon-blog.png
209 ms
vierkant-150x150.jpg
287 ms
Angelica-wieiswie-150x150.jpg
286 ms
JustGiving.png
297 ms
anbi.png
389 ms
cbf.png
372 ms
sdk.js
119 ms
nieuwsbrief.png
355 ms
facebook.png
370 ms
pattern-crossword.png
527 ms
twitter.png
442 ms
belons.png
460 ms
EurostileLTStd.otf
551 ms
EurostileLTStd-Bold.otf
527 ms
nav-donate.png
522 ms
cookiebar-close.png
585 ms
20 ms
xd_arbiter.php
122 ms
proefdiervrij.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.
ARIA
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
ARIA IDs are not unique
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
proefdiervrij.nl best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
proefdiervrij.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 Proefdiervrij.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 Proefdiervrij.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.
proefdiervrij.nl
Open Graph description is not detected on the main page of Proefdiervrij. 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: