3.5 sec in total
670 ms
2.5 sec
311 ms
Click here to check amazing Booktech content for Russia. Otherwise, check out these important facts you probably never knew about booktech.ru
Открытая бесплатная электронная техническая библиотека для всех интересующихся наукой и техникой.
Visit booktech.ruWe analyzed Booktech.ru page load time and found that the first response time was 670 ms and then it took 2.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.
booktech.ru performance score
name
value
score
weighting
Value1.0 s
100/100
10%
Value1.1 s
100/100
25%
Value3.4 s
89/100
10%
Value1,090 ms
24/100
30%
Value1.06
2/100
15%
Value11.2 s
20/100
10%
670 ms
249 ms
255 ms
256 ms
259 ms
Our browser made a total of 62 requests to load all elements on the main page. We found that 37% of them (23 requests) were addressed to the original Booktech.ru, 8% (5 requests) were made to Openstat.net and 8% (5 requests) were made to Pagead2.googlesyndication.com. The less responsive or slowest element that took the longest time to load (670 ms) belongs to the original domain Booktech.ru.
Page size can be reduced by 259.9 kB (47%)
547.7 kB
287.8 kB
In fact, the total size of Booktech.ru main page is 547.7 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. 40% of websites need less resources to load. Javascripts take 349.6 kB which makes up the majority of the site volume.
Potential reduce by 48.8 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. 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 48.8 kB or 79% of the original size.
Potential reduce by 7.7 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. Booktech images are well optimized though.
Potential reduce by 184.1 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 184.1 kB or 53% of the original size.
Potential reduce by 19.3 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. Booktech.ru needs all CSS files to be minified and compressed as it can save up to 19.3 kB or 75% of the original size.
Number of requests can be reduced by 32 (55%)
58
26
The browser has sent 58 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Booktech. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 20 to 1 for JavaScripts and as a result speed up the page load time.
booktech.ru
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booktech.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
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
<frame> or <iframe> elements do not have a title
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
booktech.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
Page has valid source maps
booktech.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
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 Booktech.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 Booktech.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.
booktech.ru
Open Graph description is not detected on the main page of Booktech. 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: