3.8 sec in total
506 ms
3.1 sec
186 ms
Visit vdi.nl now to see the best up-to-date Vdi content for Netherlands and also check out these interesting facts you probably never knew about vdi.nl
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Visit vdi.nlWe analyzed Vdi.nl page load time and found that the first response time was 506 ms and then it took 3.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.
vdi.nl performance score
name
value
score
weighting
Value4.4 s
16/100
10%
Value10.4 s
0/100
25%
Value5.4 s
57/100
10%
Value490 ms
59/100
30%
Value0.304
39/100
15%
Value9.9 s
27/100
10%
506 ms
687 ms
494 ms
8 ms
22 ms
Our browser made a total of 50 requests to load all elements on the main page. We found that 80% of them (40 requests) were addressed to the original Vdi.nl, 4% (2 requests) were made to Google-analytics.com and 4% (2 requests) were made to S.ytimg.com. The less responsive or slowest element that took the longest time to load (2 sec) belongs to the original domain Vdi.nl.
Page size can be reduced by 808.4 kB (23%)
3.5 MB
2.7 MB
In fact, the total size of Vdi.nl main page is 3.5 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 2.6 MB which makes up the majority of the site volume.
Potential reduce by 14.5 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. This page needs HTML code to be minified as it can gain 2.8 kB, which is 15% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 14.5 kB or 78% of the original size.
Potential reduce by 113.6 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. Vdi images are well optimized though.
Potential reduce by 446.1 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 446.1 kB or 76% of the original size.
Potential reduce by 234.2 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. Vdi.nl needs all CSS files to be minified and compressed as it can save up to 234.2 kB or 82% of the original size.
Number of requests can be reduced by 9 (18%)
49
40
The browser has sent 49 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Vdi. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.
vdi.nl
506 ms
jquery-1.9.1.js
687 ms
cycle2_plugin.js
494 ms
jquery.easing.min.js
8 ms
font-awesome.min.css
22 ms
vdimain.css
298 ms
newstylevdi.css
194 ms
vandorpbg.svg
111 ms
logo-van-dorp-g.png
114 ms
vandorp_header_energie.jpg
530 ms
Van-Dorp-Energieconcepten.png
175 ms
vandorp_header_grootkeukens.jpg
679 ms
Van-Dorp-Grootkeukens.png
381 ms
vandorp_header_technisch%20beheer.jpg
689 ms
Van-Dorp-Technisch-Beheer.png
205 ms
vandorp_header_liften.jpg
569 ms
Van-Dorp-Liften.png
317 ms
vandorp_header_academie.jpg
786 ms
Van-Dorp-Academie.png
557 ms
vandorp_header_elektra%20met%20icoon.jpg
728 ms
vandorp_header_brandbeveiliging.jpg
1149 ms
Van-Dorp-Brandbeveiliging.png
664 ms
12_vandorp_header_klimaat.jpg
863 ms
vandorp_header_zwembaden.jpg
878 ms
Van-Dorp-Zwembaden.png
785 ms
vandorp_header_corporate.jpg
1649 ms
Van-Dorp-Corporate.png
880 ms
vandorp_header_beveiliging.jpg
1089 ms
Van-Dorp-Beveiliging.png
958 ms
vandorp_header_railinfra.jpg
2035 ms
Van-Dorp-Railinfra.png
979 ms
featuredbg.jpg
1058 ms
ImageGen.ashx
1089 ms
ImageGen.ashx
1165 ms
ImageGen.ashx
1198 ms
columnbg.jpg
1183 ms
ImageGen.ashx
1248 ms
middlecolumnbgsingle.jpg
1261 ms
greycolplacehol.png
1279 ms
ImageGen.ashx
1304 ms
righcolumnbg.jpg
1346 ms
ImageGen.ashx
1364 ms
ga.js
18 ms
LinkedIn_logo_initials.png
90 ms
tPw5x_tRoZc
147 ms
__utm.gif
18 ms
www-embed-player-vflfNyN_r.css
61 ms
www-embed-player.js
85 ms
Tqng9ngJVK4Gqvh3e602hP-HqlN49KFEUSDtmrOPmWo.js
40 ms
ad_status.js
36 ms
vdi.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
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
vdi.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
Page has valid source maps
vdi.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
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Vdi.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 Vdi.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.
vdi.nl
Open Graph description is not detected on the main page of Vdi. 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: