1.6 sec in total
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Mozilla is the not-for-profit behind the lightning fast Firefox browser. We put people over profit to give everyone more power online.Visit mozdev.org
We analyzed Mozdev.org page load time and found that the first response time was 466 ms and then it took 1.1 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 15% of websites can load faster. This domain responded with an error, which can significantly jeopardize Mozdev.org rating and web reputation
mozdev.org performance score
Our browser made a total of 1 request to load all elements on the main page. We found that all of those requests were addressed to Mozdev.org and no external sources were called. The less responsive or slowest element that took the longest time to load (466 ms) belongs to the original domain Mozdev.org.
Page size can be reduced by 375.3 kB (80%)
In fact, the total size of Mozdev.org main page is 467.8 kB. This result falls within the top 5000 of lightweight and thus fast loading web pages. Only a small number of websites need less resources to load. CSS take 381.6 kB which makes up the majority of the site volume.
Potential reduce by 444 B
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 398 B, which is 71% 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 444 B or 79% of the original size.
Potential reduce by 2.0 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. Mozdev images are well optimized though.
Potential reduce by 29.8 kB
Potential reduce by 343.1 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. Mozdev.org needs all CSS files to be minified and compressed as it can save up to 343.1 kB or 90% of the original size.
We found no issues to fix!
mozdev.org accessibility score
These are opportunities to improve the legibility of your content.
Background and foreground colors do not have a sufficient contrast ratio.
These are opportunities to improve keyboard navigation in your application.
Heading elements are not in a sequentially-descending order
mozdev.org best practices score
Trust and Safety
Does not use HTTPS
Ensure CSP is effective against XSS attacks
mozdev.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 Mozdev.org can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Mozdev.org main page’s claimed encoding is . 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.
Open Graph description is not detected on the main page of Mozdev. 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: