3.5 sec in total
331 ms
2.9 sec
217 ms
Welcome to crow.nl homepage info - get ready to check CROW best content for Netherlands right away, or after learning these important things about crow.nl
De kennispartner voor (decentrale) overheden, aannemers en adviesbureaus. Bij CROW staan samenwerken, groei in kennis en het delen van kennis centraal.
Visit crow.nlWe analyzed Crow.nl page load time and found that the first response time was 331 ms and then it took 3.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.
crow.nl performance score
name
value
score
weighting
Value6.4 s
2/100
10%
Value10.8 s
0/100
25%
Value14.5 s
1/100
10%
Value250 ms
85/100
30%
Value0.105
88/100
15%
Value14.2 s
9/100
10%
331 ms
1597 ms
173 ms
454 ms
186 ms
Our browser made a total of 39 requests to load all elements on the main page. We found that 79% of them (31 requests) were addressed to the original Crow.nl, 5% (2 requests) were made to S7.addthis.com and 5% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.6 sec) belongs to the original domain Crow.nl.
Page size can be reduced by 793.1 kB (54%)
1.5 MB
663.8 kB
In fact, the total size of Crow.nl main page is 1.5 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. 45% of websites need less resources to load. Javascripts take 818.7 kB which makes up the majority of the site volume.
Potential reduce by 66.3 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 66.3 kB or 70% of the original size.
Potential reduce by 21.2 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. CROW images are well optimized though.
Potential reduce by 561.4 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 561.4 kB or 69% of the original size.
Potential reduce by 144.2 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. Crow.nl needs all CSS files to be minified and compressed as it can save up to 144.2 kB or 83% of the original size.
Number of requests can be reduced by 16 (52%)
31
15
The browser has sent 31 CSS, Javascripts, AJAX and image requests in order to completely render the main page of CROW. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.
crow.nl
331 ms
www.crow.nl
1597 ms
platform.css
173 ms
default.css
454 ms
medium.css
186 ms
large.css
189 ms
jquery.js
469 ms
flowtype.js
257 ms
slick.js
274 ms
WebResource.axd
282 ms
ScriptResource.axd
285 ms
ScriptResource.axd
433 ms
ScriptResource.axd
279 ms
addthis_widget.js
11 ms
default.js
289 ms
ga.js
9 ms
402851a6-e133-4ee5-a72e-e0d2eeebd3c9.js
8 ms
fbevents.js
8 ms
logo.png
271 ms
BANNER-SMALL.jpg.aspx
273 ms
CROW-SUMMER-SCHOOL.jpg.aspx
391 ms
Leergang-gww.jpg.aspx
391 ms
infradagen.jpg.aspx
391 ms
__utm.gif
27 ms
240 ms
header-icons.png
219 ms
social-icons.png
221 ms
museosans-300-webfont.woff
148 ms
museosans-500-webfont.woff
221 ms
museosans-700-webfont.woff
221 ms
slick.js
93 ms
flowtype.js
165 ms
300lo.json
60 ms
ajax-loader-slick.gif
102 ms
sh.8e5f85691f9aaa082472a194.html
31 ms
museosans-900-webfont.woff
100 ms
slick.woff
165 ms
print.css
98 ms
slick.ttf
100 ms
crow.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.
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
Impact
Issue
<html> element does not have a [lang] attribute
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
Links do not have a discernible name
Tables and lists
These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.
Impact
Issue
Lists do not contain only <li> elements and script supporting elements (<script> and <template>).
crow.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
crow.nl SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
Page is blocked from indexing
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
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Crow.nl can be misinterpreted by Google and other search engines. Our service has detected that Dutch is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Crow.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.
crow.nl
Open Graph description is not detected on the main page of CROW. 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: