3.7 sec in total
965 ms
2.6 sec
154 ms
Welcome to berkman.nl homepage info - get ready to check Berkman best content right away, or after learning these important things about berkman.nl
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Visit berkman.nlWe analyzed Berkman.nl page load time and found that the first response time was 965 ms and then it took 2.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.
berkman.nl performance score
name
value
score
weighting
Value5.3 s
7/100
10%
Value9.9 s
0/100
25%
Value7.4 s
28/100
10%
Value1,240 ms
19/100
30%
Value0.014
100/100
15%
Value16.5 s
5/100
10%
965 ms
375 ms
473 ms
568 ms
570 ms
Our browser made a total of 62 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Berkman.nl, 95% (59 requests) were made to Berkmanenergieservice.nl and 3% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.1 sec) relates to the external source Berkmanenergieservice.nl.
Page size can be reduced by 318.7 kB (57%)
561.1 kB
242.4 kB
In fact, the total size of Berkman.nl main page is 561.1 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 289.4 kB which makes up the majority of the site volume.
Potential reduce by 42.8 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 42.8 kB or 83% of the original size.
Potential reduce by 10.1 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. Berkman images are well optimized though.
Potential reduce by 201.1 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 201.1 kB or 69% of the original size.
Potential reduce by 64.6 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. Berkman.nl needs all CSS files to be minified and compressed as it can save up to 64.6 kB or 79% of the original size.
Number of requests can be reduced by 43 (70%)
61
18
The browser has sent 61 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Berkman. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 15 to 1 for JavaScripts and from 30 to 1 for CSS and as a result speed up the page load time.
berkman.nl
965 ms
system.base.css
375 ms
system.messages.css
473 ms
system.theme.css
568 ms
flexslider.css
570 ms
flexslider_img.css
571 ms
comment.css
574 ms
date.css
570 ms
datepicker.1.7.css
939 ms
field.css
661 ms
node.css
662 ms
search.css
662 ms
user.css
663 ms
views.css
664 ms
ctools.css
753 ms
jquery.fancybox-1.3.4.css
755 ms
alpha-reset.css
757 ms
alpha-mobile.css
757 ms
alpha-alpha.css
757 ms
formalize.css
847 ms
omega-branding.css
848 ms
omega-menu.css
848 ms
omega-forms.css
849 ms
global.css
850 ms
energie-alpha-default.css
943 ms
energie-alpha-default-narrow.css
944 ms
alpha-default-narrow-12.css
946 ms
energie-alpha-default-normal.css
947 ms
alpha-default-normal-12.css
949 ms
energie-alpha-default-wide.css
1023 ms
alpha-default-wide-12.css
1037 ms
jquery.js
1143 ms
jquery.once.js
1039 ms
drupal.js
1040 ms
jquery.flexslider-min.js
1041 ms
nl_pLjED4gXm57y0KDyB-5LHVSWL1vWtE1MptVysAL9zAY.js
1119 ms
cufon-yui.js
1136 ms
Berkman2.js
879 ms
cufon-drupal.js
679 ms
jquery.fancybox-1.3.4.js
588 ms
fancybox.js
665 ms
googleanalytics.js
676 ms
flexslider.load.js
676 ms
jquery.formalize.js
677 ms
omega-mediaqueries.js
600 ms
analytics.js
83 ms
src-bmes.png
100 ms
logo.png
199 ms
slogan_bg_sprite.png
102 ms
mm_bg_sprite.png
104 ms
c_INQ9419_2.jpg
195 ms
Afbeelding%20209.jpg
287 ms
Tankwagen%209%20%28bewerkt%29.jpg
384 ms
gradient.png
196 ms
mbn-left.png
197 ms
mbn-right.png
290 ms
news_item_bg.png
293 ms
Partnerovereenkomst%20Team%20Roompot%20%28website%20620x300%29_0.jpg
294 ms
Halsteren%20-%20na%20omkleuring%20%28website%20620x300%29.jpg
292 ms
Website%20afbeelding2_0.jpg
382 ms
bg_control_nav.png
323 ms
collect
12 ms
berkman.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
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
Image elements do not have [alt] attributes
Links do not have a discernible name
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
berkman.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
berkman.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 Berkman.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 Berkman.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.
berkman.nl
Open Graph description is not detected on the main page of Berkman. 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: