6 sec in total
514 ms
5.1 sec
428 ms
Welcome to deanbook.ru homepage info - get ready to check Deanbook best content for Russia right away, or after learning these important things about deanbook.ru
Нормативная и нормативно-техническая литература (промышленность, строительство, эксплуатация, ЖКХ, транспорт, энергетика); медицинская, художественная литература; научно-популярная и учебная литератур...
Visit deanbook.ruWe analyzed Deanbook.ru page load time and found that the first response time was 514 ms and then it took 5.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.
deanbook.ru performance score
name
value
score
weighting
Value4.5 s
15/100
10%
Value6.7 s
8/100
25%
Value10.8 s
7/100
10%
Value1,460 ms
15/100
30%
Value0.411
24/100
15%
Value21.0 s
2/100
10%
514 ms
771 ms
408 ms
273 ms
690 ms
Our browser made a total of 132 requests to load all elements on the main page. We found that 88% of them (116 requests) were addressed to the original Deanbook.ru, 3% (4 requests) were made to Top-fwz1.mail.ru and 2% (2 requests) were made to Image.subscribe.ru. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Deanbook.ru.
Page size can be reduced by 913.9 kB (50%)
1.8 MB
901.1 kB
In fact, the total size of Deanbook.ru main page is 1.8 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. 60% of websites need less resources to load. Javascripts take 872.0 kB which makes up the majority of the site volume.
Potential reduce by 113.1 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 20.0 kB, which is 15% 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 113.1 kB or 84% of the original size.
Potential reduce by 83.3 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, Deanbook needs image optimization as it can save up to 83.3 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 606.5 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 606.5 kB or 70% of the original size.
Potential reduce by 110.9 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. Deanbook.ru needs all CSS files to be minified and compressed as it can save up to 110.9 kB or 80% of the original size.
Number of requests can be reduced by 50 (39%)
128
78
The browser has sent 128 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Deanbook. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 24 to 1 for JavaScripts and from 13 to 1 for CSS and as a result speed up the page load time.
deanbook.ru
514 ms
www.deanbook.ru
771 ms
jquery-1.11.3.min.js
408 ms
jquery-migrate.min.js
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jquery-ui.min.js
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smfaq.js
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jquery.min.js
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template.css
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general.css
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deanbook.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
<object> elements do not have [alt] text
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
deanbook.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
User Experience
Impact
Issue
Displays images with incorrect aspect ratio
Serves images with low resolution
General
Impact
Issue
Registers an unload listener
Detected JavaScript libraries
Browser errors were logged to the console
Missing source maps for large first-party JavaScript
deanbook.ru SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
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
RU
RU
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Deanbook.ru can be misinterpreted by Google and other search engines. Our service has detected that Russian is used on the page, and it matches the claimed language. Our system also found out that Deanbook.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.
deanbook.ru
Open Graph description is not detected on the main page of Deanbook. 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: