4.3 sec in total
257 ms
3.5 sec
510 ms
Welcome to duurzaamgebouwd.nl homepage info - get ready to check Duurzaam Gebouwd best content for Netherlands right away, or after learning these important things about duurzaamgebouwd.nl
Iedereen in Nederland wil duurzaam bouwen, maar wat is de zin en de onzin hiervan? Duurzaam Gebouwd is de leidende expertblog voor en door experts op het gebied van duurzaam bouwen. De weblogs worden ...
Visit duurzaamgebouwd.nlWe analyzed Duurzaamgebouwd.nl page load time and found that the first response time was 257 ms and then it took 4 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.
duurzaamgebouwd.nl performance score
name
value
score
weighting
Value3.9 s
26/100
10%
Value6.1 s
12/100
25%
Value8.2 s
20/100
10%
Value1,790 ms
10/100
30%
Value0.012
100/100
15%
Value11.9 s
16/100
10%
257 ms
939 ms
412 ms
582 ms
333 ms
Our browser made a total of 61 requests to load all elements on the main page. We found that 31% of them (19 requests) were addressed to the original Duurzaamgebouwd.nl, 56% (34 requests) were made to Cache.duurzaamgebouwd.nl and 3% (2 requests) were made to Ads.creative-serving.com. The less responsive or slowest element that took the longest time to load (1.8 sec) relates to the external source Cache.duurzaamgebouwd.nl.
Page size can be reduced by 255.2 kB (20%)
1.3 MB
1.0 MB
In fact, the total size of Duurzaamgebouwd.nl main page is 1.3 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 994.0 kB which makes up the majority of the site volume.
Potential reduce by 34.4 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 34.4 kB or 79% of the original size.
Potential reduce by 64.0 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. Duurzaam Gebouwd images are well optimized though.
Potential reduce by 108.7 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 108.7 kB or 63% of the original size.
Potential reduce by 48.1 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. Duurzaamgebouwd.nl needs all CSS files to be minified and compressed as it can save up to 48.1 kB or 84% of the original size.
Number of requests can be reduced by 16 (27%)
59
43
The browser has sent 59 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Duurzaam Gebouwd. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and as a result speed up the page load time.
duurzaamgebouwd.nl
257 ms
www.duurzaamgebouwd.nl
939 ms
default.css
412 ms
jquery.js
582 ms
default.js
333 ms
track.js
168 ms
pixel
5 ms
29619
34 ms
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gtm.js
66 ms
bckg_dg.png
168 ms
bckg_dg_.png
84 ms
sync
16 ms
match
14 ms
track.gif
90 ms
bckg_header_intro.jpg
251 ms
icons_sm.png
136 ms
cmadnx
85 ms
geometricslabserif703mediumcondensedbt-webfont.woff
316 ms
track.gif
160 ms
track.gif
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track.gif
203 ms
bckg_right_h3_all.gif
217 ms
icon-top.png
227 ms
analytics.js
22 ms
overlay.png
230 ms
collect
11 ms
duurzaamgebouwd.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.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
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
Image elements do not have [alt] attributes
Links do not have a discernible name
duurzaamgebouwd.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
Browser errors were logged to the console
Page has valid source maps
duurzaamgebouwd.nl SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
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 Duurzaamgebouwd.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 Duurzaamgebouwd.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.
duurzaamgebouwd.nl
Open Graph description is not detected on the main page of Duurzaam Gebouwd. 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: