3.9 sec in total
606 ms
3.2 sec
136 ms
Welcome to dataportal.eso.org homepage info - get ready to check Dataportal Eso best content for China right away, or after learning these important things about dataportal.eso.org
Visit dataportal.eso.orgWe analyzed Dataportal.eso.org page load time and found that the first response time was 606 ms and then it took 3.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.
dataportal.eso.org performance score
name
value
score
weighting
Value3.3 s
41/100
10%
Value3.8 s
55/100
25%
Value4.3 s
76/100
10%
Value0 ms
100/100
30%
Value0.099
90/100
15%
Value3.3 s
94/100
10%
606 ms
1071 ms
131 ms
261 ms
260 ms
Our browser made a total of 19 requests to load all elements on the main page. We found that 5% of them (1 request) were addressed to the original Dataportal.eso.org, 95% (18 requests) were made to Eso.org. The less responsive or slowest element that took the longest time to load (1.1 sec) relates to the external source Eso.org.
Page size can be reduced by 71.7 kB (55%)
130.5 kB
58.8 kB
In fact, the total size of Dataportal.eso.org main page is 130.5 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. Only 10% of websites need less resources to load. CSS take 75.0 kB which makes up the majority of the site volume.
Potential reduce by 8.1 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 4.1 kB, which is 38% 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 8.1 kB or 76% of the original size.
Potential reduce by 21 B
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. Dataportal Eso images are well optimized though.
Potential reduce by 586 B
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 586 B or 68% of the original size.
Potential reduce by 63.0 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. Dataportal.eso.org needs all CSS files to be minified and compressed as it can save up to 63.0 kB or 84% of the original size.
Number of requests can be reduced by 10 (59%)
17
7
The browser has sent 17 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Dataportal Eso. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for CSS and as a result speed up the page load time.
dataportal.eso.org
606 ms
login
1071 ms
layout_eso_2007.css
131 ms
common.js
261 ms
base.css
260 ms
basemod_2col_left.css
598 ms
eso2008.css
488 ms
nav_vlist.css
593 ms
nav_shinybuttons.css
594 ms
header.css
1022 ms
navmain.css
1013 ms
footer.css
614 ms
frontpage.css
718 ms
print_003.css
716 ms
bg_left.gif
128 ms
headerimage.jpg
130 ms
esologo.jpg
129 ms
phot-17c-99-banner.jpg
133 ms
flags-sp-cz.gif
131 ms
dataportal.eso.org 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.
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
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Some elements have a [tabindex] value greater than 0
dataportal.eso.org 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
Browser errors were logged to the console
dataportal.eso.org 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
N/A
N/A
ISO-8859-1
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Dataportal.eso.org can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else) and no language is claimed in <html> or <meta> tags either. Our system also found out that Dataportal.eso.org main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.
dataportal.eso.org
Open Graph description is not detected on the main page of Dataportal Eso. 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: