6.5 sec in total
472 ms
5.7 sec
357 ms
Click here to check amazing IRB Barcelona content for Spain. Otherwise, check out these important facts you probably never knew about irbbarcelona.org
IRB Barcelona. Biomedical research institute that works for a life free of cancer and other diseases linked to ageing.
Visit irbbarcelona.orgWe analyzed Irbbarcelona.org page load time and found that the first response time was 472 ms and then it took 6.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.
irbbarcelona.org performance score
name
value
score
weighting
Value4.8 s
12/100
10%
Value20.1 s
0/100
25%
Value12.4 s
3/100
10%
Value1,860 ms
9/100
30%
Value0.638
9/100
15%
Value22.8 s
1/100
10%
472 ms
128 ms
112 ms
232 ms
14 ms
Our browser made a total of 111 requests to load all elements on the main page. We found that 61% of them (68 requests) were addressed to the original Irbbarcelona.org, 18% (20 requests) were made to Pbs.twimg.com and 7% (8 requests) were made to O.twimg.com. The less responsive or slowest element that took the longest time to load (3.7 sec) belongs to the original domain Irbbarcelona.org.
Page size can be reduced by 1.0 MB (15%)
6.5 MB
5.5 MB
In fact, the total size of Irbbarcelona.org main page is 6.5 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. 65% of websites need less resources to load. Images take 5.7 MB which makes up the majority of the site volume.
Potential reduce by 31.4 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 31.4 kB or 76% of the original size.
Potential reduce by 313.9 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. IRB Barcelona images are well optimized though.
Potential reduce by 230.5 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 230.5 kB or 70% of the original size.
Potential reduce by 425.2 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. Irbbarcelona.org needs all CSS files to be minified and compressed as it can save up to 425.2 kB or 84% of the original size.
Number of requests can be reduced by 36 (34%)
106
70
The browser has sent 106 CSS, Javascripts, AJAX and image requests in order to completely render the main page of IRB Barcelona. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 26 to 1 for JavaScripts and from 12 to 1 for CSS and as a result speed up the page load time.
irbbarcelona.org
472 ms
en
128 ms
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irbbarcelona.org 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.
irbbarcelona.org 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
irbbarcelona.org SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Links do not have descriptive text
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
EN
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Irbbarcelona.org can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Irbbarcelona.org 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.
irbbarcelona.org
Open Graph description is not detected on the main page of IRB Barcelona. 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: