2.7 sec in total
260 ms
1.8 sec
626 ms
Click here to check amazing Mozilla content for Czech Republic. Otherwise, check out these important facts you probably never knew about mozilla.cz
Česká komunita uživatelů aplikací Mozilly
Visit mozilla.czWe analyzed Mozilla.cz page load time and found that the first response time was 260 ms and then it took 2.4 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.
mozilla.cz performance score
name
value
score
weighting
Value3.1 s
45/100
10%
Value3.4 s
68/100
25%
Value4.1 s
78/100
10%
Value160 ms
94/100
30%
Value0.001
100/100
15%
Value6.5 s
58/100
10%
260 ms
120 ms
52 ms
226 ms
232 ms
Our browser made a total of 51 requests to load all elements on the main page. We found that 63% of them (32 requests) were addressed to the original Mozilla.cz, 12% (6 requests) were made to Mozorg.cdn.mozilla.net and 8% (4 requests) were made to Platform.twitter.com. The less responsive or slowest element that took the longest time to load (654 ms) belongs to the original domain Mozilla.cz.
Page size can be reduced by 273.4 kB (36%)
753.5 kB
480.2 kB
In fact, the total size of Mozilla.cz main page is 753.5 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. 50% of websites need less resources to load. Images take 428.4 kB which makes up the majority of the site volume.
Potential reduce by 30.2 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 30.2 kB or 76% of the original size.
Potential reduce by 39.7 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. Mozilla images are well optimized though.
Potential reduce by 149.1 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 149.1 kB or 68% of the original size.
Potential reduce by 54.4 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. Mozilla.cz needs all CSS files to be minified and compressed as it can save up to 54.4 kB or 83% of the original size.
Number of requests can be reduced by 23 (50%)
46
23
The browser has sent 46 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Mozilla. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and from 10 to 1 for CSS and as a result speed up the page load time.
www.mozilla.cz
260 ms
style.css
120 ms
tabzilla-min.css
52 ms
widget.css
226 ms
twitter-feed.css
232 ms
style.css
236 ms
download-button.css
243 ms
stone.css
244 ms
jquery.js
416 ms
jquery-migrate.min.js
337 ms
wp-embed.min.js
344 ms
wp-emoji-release.min.js
222 ms
tabzilla.js
3 ms
analytics.js
20 ms
collect
55 ms
tab.png
40 ms
a375266f9c45bddb8ae3af9267a65fd7
187 ms
firefox-small.png
461 ms
bg-stone.png
180 ms
mozilla-communities.png
179 ms
bg-date-lt.png
180 ms
icn-comment.png
179 ms
firefox-64.png
179 ms
AMO-2011-2016-600x500.gif
335 ms
AMO-2016soon-600x500.jpg
526 ms
iceweasel-firefox-600x300.jpg
413 ms
activity-stream-1-600x450.jpg
459 ms
activity-stream-2-600x450.jpg
530 ms
firefox-share-600x283.jpg
420 ms
memory_usage_graph-600x387.png
556 ms
icn-search.png
532 ms
help.gif
537 ms
twitter-16.png
605 ms
facebook-16.png
642 ms
rss-new-16.png
643 ms
firefox-16.png
647 ms
logo-cesky-hosting-150.png
654 ms
widgets.js
130 ms
logo-mozillacz-lt.png
640 ms
OpenSans-Semibold-webfont.woff
157 ms
OpenSans-Bold-webfont.woff
170 ms
OpenSans-Light-webfont.woff
176 ms
OpenSans-Regular-webfont.woff
43 ms
timeline.1b43d11859b7663a2225b885f87704a5.js
35 ms
syndication
113 ms
562553879095939073
108 ms
timeline.4d087f49a21e27038d9769d7c976b8fa.default.css
3 ms
timeline.4d087f49a21e27038d9769d7c976b8fa.default.css
6 ms
junkSC-k_normal.jpeg
28 ms
jot
27 ms
print.css
118 ms
mozilla.cz 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
mozilla.cz best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
mozilla.cz SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Image elements do not have [alt] attributes
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
CS
CS
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Mozilla.cz can be misinterpreted by Google and other search engines. Our service has detected that Czech is used on the page, and it matches the claimed language. Our system also found out that Mozilla.cz 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.
mozilla.cz
Open Graph data is detected on the main page of Mozilla. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: