9 sec in total
370 ms
8.4 sec
239 ms
Welcome to boek9.nl homepage info - get ready to check Boek9 best content for Netherlands right away, or after learning these important things about boek9.nl
Visit boek9.nlWe analyzed Boek9.nl page load time and found that the first response time was 370 ms and then it took 8.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.
boek9.nl performance score
name
value
score
weighting
Value2.6 s
64/100
10%
Value2.7 s
85/100
25%
Value4.4 s
75/100
10%
Value1,000 ms
27/100
30%
Value0
100/100
15%
Value8.4 s
38/100
10%
370 ms
4127 ms
409 ms
254 ms
254 ms
Our browser made a total of 84 requests to load all elements on the main page. We found that 98% of them (82 requests) were addressed to the original Boek9.nl, 2% (2 requests) were made to Ssl.google-analytics.com. The less responsive or slowest element that took the longest time to load (4.1 sec) belongs to the original domain Boek9.nl.
Page size can be reduced by 156.6 kB (25%)
634.1 kB
477.5 kB
In fact, the total size of Boek9.nl main page is 634.1 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. 35% of websites need less resources to load. Images take 473.3 kB which makes up the majority of the site volume.
Potential reduce by 43.3 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. This page needs HTML code to be minified as it can gain 11.4 kB, which is 22% 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 43.3 kB or 84% of the original size.
Potential reduce by 50.2 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. Obviously, Boek9 needs image optimization as it can save up to 50.2 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 47.8 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 47.8 kB or 53% of the original size.
Potential reduce by 15.3 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. Boek9.nl needs all CSS files to be minified and compressed as it can save up to 15.3 kB or 77% of the original size.
Number of requests can be reduced by 4 (5%)
82
78
The browser has sent 82 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Boek9. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and as a result speed up the page load time.
boek9.nl
370 ms
www.boek9.nl
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style.css
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user-content.css
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modernizr-2.6.2.custom.min.js
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jquery-1.3.2.min.js
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boek9.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
boek9.nl best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
boek9.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
NL
NL
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Boek9.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 Boek9.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.
boek9.nl
Open Graph description is not detected on the main page of Boek9. 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: