2.6 sec in total
430 ms
2 sec
216 ms
Click here to check amazing Java Rush content for Russia. Otherwise, check out these important facts you probably never knew about javarush.ru
JavaRush — современный подход к изучению программирования и обучению в целом. Курсы Java подходят для начинающих в сфере IT и для программистов желающих расширить свои знания
Visit javarush.ruWe analyzed Javarush.ru page load time and found that the first response time was 430 ms and then it took 2.2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.
javarush.ru performance score
name
value
score
weighting
Value2.9 s
52/100
10%
Value4.8 s
30/100
25%
Value7.8 s
23/100
10%
Value9,530 ms
0/100
30%
Value0.002
100/100
15%
Value14.0 s
10/100
10%
430 ms
125 ms
244 ms
249 ms
382 ms
Our browser made a total of 41 requests to load all elements on the main page. We found that 44% of them (18 requests) were addressed to the original Javarush.ru, 34% (14 requests) were made to Vk.com and 7% (3 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (808 ms) belongs to the original domain Javarush.ru.
Page size can be reduced by 527.7 kB (78%)
680.5 kB
152.8 kB
In fact, the total size of Javarush.ru main page is 680.5 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. 35% of websites need less resources to load. Javascripts take 555.6 kB which makes up the majority of the site volume.
Potential reduce by 15.8 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 4.3 kB, which is 21% 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 15.8 kB or 78% of the original size.
Potential reduce by 7.1 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. Obviously, Java Rush needs image optimization as it can save up to 7.1 kB or 27% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 438.8 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 438.8 kB or 79% of the original size.
Potential reduce by 65.9 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. Javarush.ru needs all CSS files to be minified and compressed as it can save up to 65.9 kB or 84% of the original size.
Number of requests can be reduced by 20 (53%)
38
18
The browser has sent 38 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Java Rush. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and as a result speed up the page load time.
javarush.ru
430 ms
main.css
125 ms
statistics.js.jsp
244 ms
common.js
249 ms
openapi.js
382 ms
share.js
506 ms
jquery-1.9.1.js
621 ms
jquery.cookie.js
247 ms
analytics.js
10 ms
ecommerce.js
9 ms
collect
3 ms
collect
78 ms
ga-audiences
51 ms
fbds.js
46 ms
bg_wrapper.png
133 ms
Logo.png
134 ms
header-2.png
133 ms
menu_has_submenu.png
133 ms
menu_nav_submenu.png
129 ms
4.gif
808 ms
7.gif
786 ms
6.gif
795 ms
5.gif
514 ms
1.gif
802 ms
3.gif
629 ms
statistics.json
616 ms
share.php
144 ms
share_logo.png
249 ms
widget_like.php
285 ms
watch.js
6 ms
110 ms
upload.gif
248 ms
loader_nav19239_3.js
128 ms
lite.css
129 ms
lite.js
374 ms
lang3_0.js
132 ms
widgets.css
269 ms
xdm.js
251 ms
al_like.js
255 ms
like_widget.png
126 ms
27 ms
javarush.ru 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
Buttons do not have an accessible name
Links do not have a discernible name
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
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
javarush.ru 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
javarush.ru SEO score
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
RU
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Javarush.ru can be misinterpreted by Google and other search engines. Our service has detected that Russian 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 Javarush.ru 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.
javarush.ru
Open Graph description is not detected on the main page of Java Rush. 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: