6.9 sec in total
536 ms
6.1 sec
259 ms
Click here to check amazing Katakomba content. Otherwise, check out these important facts you probably never knew about katakomba.ru
Интерсвязь
Visit katakomba.ruWe analyzed Katakomba.ru page load time and found that the first response time was 536 ms and then it took 6.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.
katakomba.ru performance score
name
value
score
weighting
Value3.1 s
45/100
10%
Value12.8 s
0/100
25%
Value8.3 s
19/100
10%
Value7,440 ms
0/100
30%
Value0.028
100/100
15%
Value22.2 s
1/100
10%
536 ms
1725 ms
461 ms
308 ms
863 ms
Our browser made a total of 101 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Katakomba.ru, 87% (88 requests) were made to Is74.ru and 3% (3 requests) were made to Counter.yadro.ru. The less responsive or slowest element that took the longest time to load (2.2 sec) relates to the external source Is74.ru.
Page size can be reduced by 881.0 kB (53%)
1.7 MB
786.5 kB
In fact, the total size of Katakomba.ru main page is 1.7 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. 50% of websites need less resources to load. Javascripts take 841.8 kB which makes up the majority of the site volume.
Potential reduce by 52.6 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 8.4 kB, which is 13% 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 52.6 kB or 81% of the original size.
Potential reduce by 119.6 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. Obviously, Katakomba needs image optimization as it can save up to 119.6 kB or 19% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 608.0 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 608.0 kB or 72% of the original size.
Potential reduce by 100.8 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. Katakomba.ru needs all CSS files to be minified and compressed as it can save up to 100.8 kB or 83% of the original size.
Number of requests can be reduced by 34 (35%)
96
62
The browser has sent 96 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Katakomba. 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 from 10 to 1 for CSS and as a result speed up the page load time.
katakomba.ru
536 ms
www.is74.ru
1725 ms
jquery-1.11.2.min.js
461 ms
jquery.mobile.custom.min.js
308 ms
jquery-ui.min.js
863 ms
jquery.maskedinput.js
628 ms
style-production.css
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rocket-banner.css
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all.css
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jquery.js
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autoDonkey.js
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style.css
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script-production.js
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donkeys.css
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donkeys.js
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logo
262 ms
background.png
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index.js.php
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scenario.js
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print.css
155 ms
tracker
160 ms
katakomba.ru accessibility score
ARIA
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
[aria-*] attributes do not match their roles
button, link, and menuitem elements do not have accessible names.
[role]s are not contained by their required parent element
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
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
Links do not have a discernible name
katakomba.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
Missing source maps for large first-party JavaScript
katakomba.ru SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
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
N/A
N/A
N/A
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Katakomba.ru can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else) and no language is claimed in <html> or <meta> tags either. Our system also found out that Katakomba.ru 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.
katakomba.ru
Open Graph description is not detected on the main page of Katakomba. 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: