7.3 sec in total
1.9 sec
5 sec
366 ms
Visit bibliotheek.rotterdam.nl now to see the best up-to-date Bibliotheek Rotterdam content for Netherlands and also check out these interesting facts you probably never knew about bibliotheek.rotterdam.nl
Bibliotheek Rotterdam helpt Rotterdammers om bewust, kritisch en actief deel te nemen aan de samenleving. We geven toegang tot betrouwbare kennis en organiseren activiteiten.
Visit bibliotheek.rotterdam.nlWe analyzed Bibliotheek.rotterdam.nl page load time and found that the first response time was 1.9 sec and then it took 5.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.
bibliotheek.rotterdam.nl performance score
name
value
score
weighting
Value5.3 s
7/100
10%
Value5.3 s
22/100
25%
Value10.1 s
9/100
10%
Value1,960 ms
8/100
30%
Value0.311
37/100
15%
Value12.4 s
14/100
10%
1873 ms
202 ms
6 ms
541 ms
955 ms
Our browser made a total of 112 requests to load all elements on the main page. We found that 48% of them (54 requests) were addressed to the original Bibliotheek.rotterdam.nl, 20% (22 requests) were made to Pbs.twimg.com and 15% (17 requests) were made to Wise-web.bibliotheek.rotterdam.nl. The less responsive or slowest element that took the longest time to load (1.9 sec) belongs to the original domain Bibliotheek.rotterdam.nl.
Page size can be reduced by 653.4 kB (28%)
2.4 MB
1.7 MB
In fact, the total size of Bibliotheek.rotterdam.nl main page is 2.4 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. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 1.6 MB which makes up the majority of the site volume.
Potential reduce by 45.7 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 7.9 kB, which is 14% 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 45.7 kB or 79% of the original size.
Potential reduce by 51.0 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. Bibliotheek Rotterdam images are well optimized though.
Potential reduce by 164.3 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 164.3 kB or 64% of the original size.
Potential reduce by 392.4 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. Bibliotheek.rotterdam.nl needs all CSS files to be minified and compressed as it can save up to 392.4 kB or 84% of the original size.
Number of requests can be reduced by 34 (37%)
93
59
The browser has sent 93 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Bibliotheek Rotterdam. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and from 19 to 1 for CSS and as a result speed up the page load time.
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bibliotheek.rotterdam.nl accessibility score
ARIA
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
[aria-*] attributes do not match their roles
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
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.
bibliotheek.rotterdam.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
Missing source maps for large first-party JavaScript
bibliotheek.rotterdam.nl SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
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 Bibliotheek.rotterdam.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 Bibliotheek.rotterdam.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.
bibliotheek.rotterdam.nl
Open Graph description is not detected on the main page of Bibliotheek Rotterdam. 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: