4.7 sec in total
Click here to check amazing ESO content for China. Otherwise, check out these important facts you probably never knew about eso.org
ESO, European Organisation for Astronomical Research in the Southern HemisphereVisit eso.org
We analyzed Eso.org page load time and found that the first response time was 394 ms and then it took 4.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.
eso.org performance score
Our browser made a total of 51 requests to load all elements on the main page. We found that 43% of them (22 requests) were addressed to the original Eso.org, 31% (16 requests) were made to Cdn.eso.org and 8% (4 requests) were made to S.ytimg.com. The less responsive or slowest element that took the longest time to load (1.6 sec) belongs to the original domain Eso.org.
Page size can be reduced by 792.8 kB (16%)
In fact, the total size of Eso.org main page is 4.8 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. 55% of websites need less resources to load. Images take 3.9 MB which makes up the majority of the site volume.
Potential reduce by 168.9 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 168.9 kB or 86% of the original size.
Potential reduce by 78.2 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. ESO images are well optimized though.
Potential reduce by 148.4 kB
Potential reduce by 397.3 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. Eso.org needs all CSS files to be minified and compressed as it can save up to 397.3 kB or 83% of the original size.
Number of requests can be reduced by 8 (20%)
eso.org accessibility score
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.
[aria-hidden="true"] elements contain focusable descendents
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.
Buttons do not have an accessible name
Links do not have a discernible name
These are opportunities to improve the legibility of your content.
Background and foreground colors do not have a sufficient contrast ratio.
eso.org best practices score
Trust and Safety
Does not use HTTPS
Ensure CSP is effective against XSS attacks
eso.org SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Links do not have descriptive text
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/).
Document uses legible font sizes
Tap targets are not sized appropriately
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Eso.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 Eso.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.
Open Graph data is detected on the main page of ESO. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: