6.1 sec in total
279 ms
5.7 sec
200 ms
Click here to check amazing Usabilityweb content. Otherwise, check out these important facts you probably never knew about usabilityweb.nl
De kennisbank over User Centered Design, User Innovation, UX research
Visit usabilityweb.nlWe analyzed Usabilityweb.nl page load time and found that the first response time was 279 ms and then it took 5.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.
usabilityweb.nl performance score
name
value
score
weighting
Value5.5 s
6/100
10%
Value7.6 s
3/100
25%
Value7.2 s
30/100
10%
Value1,070 ms
25/100
30%
Value0.014
100/100
15%
Value8.3 s
39/100
10%
279 ms
2247 ms
88 ms
165 ms
166 ms
Our browser made a total of 49 requests to load all elements on the main page. We found that 45% of them (22 requests) were addressed to the original Usabilityweb.nl, 8% (4 requests) were made to Farm9.staticflickr.com and 6% (3 requests) were made to Farm7.staticflickr.com. The less responsive or slowest element that took the longest time to load (2.8 sec) relates to the external source Design.concept7.nl.
Page size can be reduced by 267.3 kB (43%)
617.8 kB
350.5 kB
In fact, the total size of Usabilityweb.nl main page is 617.8 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. 30% of websites need less resources to load. Javascripts take 336.1 kB which makes up the majority of the site volume.
Potential reduce by 19.3 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. 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 19.3 kB or 72% of the original size.
Potential reduce by 11.9 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. Usabilityweb images are well optimized though.
Potential reduce by 216.7 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 216.7 kB or 64% of the original size.
Potential reduce by 19.4 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. Usabilityweb.nl needs all CSS files to be minified and compressed as it can save up to 19.4 kB or 80% of the original size.
Number of requests can be reduced by 22 (48%)
46
24
The browser has sent 46 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Usabilityweb. 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 5 to 1 for CSS and as a result speed up the page load time.
usabilityweb.nl
279 ms
www.usabilityweb.nl
2247 ms
style.css
88 ms
widget.css
165 ms
sociable.css
166 ms
styles.css
167 ms
wpp.css
168 ms
jquery.js
267 ms
jquery-migrate.min.js
200 ms
sociable.js
248 ms
vuible.js
248 ms
addtofavorites.js
248 ms
plusone.js
46 ms
brand
17 ms
jquery.form.min.js
247 ms
scripts.js
294 ms
wp-embed.min.js
329 ms
re_.js
12 ms
brand
87 ms
wp-emoji-release.min.js
229 ms
i.js
11 ms
24eeadd6453b0c080a5e1707768acda93808a91e.1.js
44 ms
ga.js
6 ms
__utm.gif
35 ms
plusone.js
52 ms
cb=gapi.loaded_0
22 ms
vis_opt.js
46 ms
js_visitor_settings.php
5 ms
logo_usabilityweb.gif
153 ms
8433031938_55547af1db_s.jpg
195 ms
6554638649_5462c45a3a_s.jpg
172 ms
6330028000_67908d6b9e_s.jpg
190 ms
boekenlegger_250x250.jpg
2763 ms
f9067c03231e673d91ca500e0b8178c4
148 ms
4145e9c233f6c146780a2f09116684b1
148 ms
8433031872_d3da2f0c33_s.jpg
270 ms
8433031720_d9fda0384a_s.jpg
190 ms
7928993816_f6de6d557d_s.jpg
193 ms
6281188302_b518642883_s.jpg
212 ms
6279263521_13f6a64efa_s.jpg
191 ms
defaultthumbfeatured.jpg
2466 ms
c7logo_footer.gif
2411 ms
398e26d5c277a45def2c54d5e8b95744
174 ms
v.gif
8 ms
top_fade.gif
140 ms
vlak-grijs.gif
178 ms
link-arrow.png
139 ms
__utm.gif
103 ms
e
9 ms
usabilityweb.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.
usabilityweb.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
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Issues were logged in the Issues panel in Chrome Devtools
usabilityweb.nl SEO score
NL
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Usabilityweb.nl can be misinterpreted by Google and other search engines. Our service has detected that Dutch is used on the page, and it does not match the claimed English language. Our system also found out that Usabilityweb.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.
usabilityweb.nl
Open Graph description is not detected on the main page of Usabilityweb. 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: