5.4 sec in total
575 ms
4.4 sec
401 ms
Click here to check amazing Classdom content for Russia. Otherwise, check out these important facts you probably never knew about classdom.ru
Приложение Capcut – простой видеоредактор
Visit classdom.ruWe analyzed Classdom.ru page load time and found that the first response time was 575 ms and then it took 4.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.
classdom.ru performance score
name
value
score
weighting
Value2.9 s
53/100
10%
Value3.4 s
66/100
25%
Value4.1 s
80/100
10%
Value150 ms
94/100
30%
Value0.071
96/100
15%
Value7.4 s
48/100
10%
575 ms
211 ms
321 ms
10 ms
198 ms
Our browser made a total of 174 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Classdom.ru, 11% (20 requests) were made to Web.redhelper.ru and 10% (18 requests) were made to Openx.top55.info. The less responsive or slowest element that took the longest time to load (1.9 sec) relates to the external source Nsk.classdom.ru.
Page size can be reduced by 1.2 MB (42%)
2.8 MB
1.6 MB
In fact, the total size of Classdom.ru main page is 2.8 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. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 1.5 MB which makes up the majority of the site volume.
Potential reduce by 282.3 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 35.9 kB, which is 11% 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 282.3 kB or 87% of the original size.
Potential reduce by 154.6 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. Classdom images are well optimized though.
Potential reduce by 528.5 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 528.5 kB or 71% of the original size.
Potential reduce by 188.3 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. Classdom.ru needs all CSS files to be minified and compressed as it can save up to 188.3 kB or 83% of the original size.
Number of requests can be reduced by 78 (46%)
171
93
The browser has sent 171 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Classdom. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 28 to 1 for JavaScripts and from 14 to 1 for CSS and as a result speed up the page load time.
nsk.classdom.ru
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stylesheet_a039ac3b10.css
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style_2013.css
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style_bs_2013.css
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photog.css
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login.css
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jquery-1.9.1.min.js
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classdom.ru 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.
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
No form fields have multiple labels
Links do not have a discernible name
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
Tables and lists
These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.
Impact
Issue
Lists do not contain only <li> elements and script supporting elements (<script> and <template>).
classdom.ru best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
classdom.ru SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Page is blocked from indexing
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
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Classdom.ru 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 Classdom.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.
classdom.ru
Open Graph description is not detected on the main page of Classdom. 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: