2.7 sec in total
706 ms
1.8 sec
162 ms
Click here to check amazing Vlht content. Otherwise, check out these important facts you probably never knew about vlht.nl
De Vereniging van Laboratoriumhoudende Tandtechnici voor de tandtechniek
Visit vlht.nlWe analyzed Vlht.nl page load time and found that the first response time was 706 ms and then it took 2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.
vlht.nl performance score
name
value
score
weighting
Value2.0 s
83/100
10%
Value5.1 s
25/100
25%
Value4.0 s
81/100
10%
Value70 ms
99/100
30%
Value0.464
19/100
15%
Value4.7 s
80/100
10%
706 ms
98 ms
172 ms
298 ms
182 ms
Our browser made a total of 29 requests to load all elements on the main page. We found that 93% of them (27 requests) were addressed to the original Vlht.nl, 7% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (706 ms) belongs to the original domain Vlht.nl.
Page size can be reduced by 264.1 kB (48%)
547.9 kB
283.8 kB
In fact, the total size of Vlht.nl main page is 547.9 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 288.8 kB which makes up the majority of the site volume.
Potential reduce by 6.7 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 6.7 kB or 70% of the original size.
Potential reduce by 5.5 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. Vlht images are well optimized though.
Potential reduce by 217.8 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 217.8 kB or 75% of the original size.
Potential reduce by 34.1 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. Vlht.nl needs all CSS files to be minified and compressed as it can save up to 34.1 kB or 82% of the original size.
Number of requests can be reduced by 13 (46%)
28
15
The browser has sent 28 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Vlht. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and as a result speed up the page load time.
vlht.nl
706 ms
css.css
98 ms
_fix.css
172 ms
prototype.js
298 ms
scriptaculous.js
182 ms
general.js
220 ms
swfobject.js
219 ms
rgbcolor.js
220 ms
browserfix.js
257 ms
sortable.js
274 ms
_basic.css
217 ms
builder.js
104 ms
effects.js
103 ms
dragdrop.js
100 ms
controls.js
101 ms
slider.js
89 ms
sound.js
102 ms
vlhtLogo.jpg
97 ms
menuitem_bg.png
98 ms
homeBgr.jpg
471 ms
bg_nieuwsbriefBanner.gif
175 ms
banner_labtoppers_home.png
170 ms
banner_blog_home.png
279 ms
100logo.png
195 ms
ga.js
9 ms
HelveticaNeueLTStd-LtCn.woff
248 ms
HelveticaNeue-Bold.woff
646 ms
arrows.woff
238 ms
__utm.gif
11 ms
vlht.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
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
vlht.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
vlht.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
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 Vlht.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 Vlht.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.
vlht.nl
Open Graph description is not detected on the main page of Vlht. 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: