2.9 sec in total
453 ms
2 sec
441 ms
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Visit developers.redhat.comWe analyzed Developers.redhat.com page load time and found that the first response time was 453 ms and then it took 2.5 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.
developers.redhat.com performance score
name
value
score
weighting
Value4.9 s
11/100
10%
Value13.1 s
0/100
25%
Value8.5 s
17/100
10%
Value1,760 ms
10/100
30%
Value0.238
52/100
15%
Value18.7 s
3/100
10%
453 ms
11 ms
43 ms
91 ms
71 ms
Our browser made a total of 78 requests to load all elements on the main page. We found that 3% of them (2 requests) were addressed to the original Developers.redhat.com, 49% (38 requests) were made to Static.jboss.org and 4% (3 requests) were made to Redhat.com. The less responsive or slowest element that took the longest time to load (1.3 sec) relates to the external source Static.jboss.org.
Page size can be reduced by 747.1 kB (55%)
1.4 MB
605.0 kB
In fact, the total size of Developers.redhat.com main page is 1.4 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. 65% of websites need less resources to load. CSS take 499.5 kB which makes up the majority of the site volume.
Potential reduce by 57.7 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. 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 57.7 kB or 71% of the original size.
Potential reduce by 1.6 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. Developers Red Hat images are well optimized though.
Potential reduce by 261.4 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 261.4 kB or 65% of the original size.
Potential reduce by 426.5 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. Developers.redhat.com needs all CSS files to be minified and compressed as it can save up to 426.5 kB or 85% of the original size.
Number of requests can be reduced by 38 (52%)
73
35
The browser has sent 73 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Developers Red Hat. 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 as a result speed up the page load time.
developers.redhat.com
453 ms
target.js
11 ms
ajax
43 ms
all-129.css
91 ms
angular.min.js
71 ms
raven.min.js
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bottom-112.js
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index-509.js
85 ms
aksb.min.js
154 ms
gtm.js
154 ms
j.php
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images_branding_RHDev_homeherovideo_jbosseap7beta-1.jpg
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RHDev_homefeature_reactisotopeflux.png
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RHDev_homefeature_deployingPSGI.png
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images_design_RHDev_homepage_jointext_desktop-2.svg
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images_design_RHDev_homepage_jointext_mobile-2.svg
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images_design_RHDev_homepage_download-3.svg
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images_design_RHDev_homepage_cloud-3.svg
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images_branding_RHLogo_white-5.svg
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login-status-iframe.html
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shim.css
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forms-ext.css
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com.atlassian.jira.collector.plugin.jira-issue-collector-plugin:issuecollector.js
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developers.redhat.com accessibility score
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
developers.redhat.com 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
Browser errors were logged to the console
Missing source maps for large first-party JavaScript
Issues were logged in the Issues panel in Chrome Devtools
developers.redhat.com 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
Image elements do not have [alt] attributes
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 Developers.redhat.com 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 Developers.redhat.com 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.
developers.redhat.com
Open Graph data is detected on the main page of Developers Red Hat. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: