30.4 sec in total
1.5 sec
24.6 sec
4.2 sec
Click here to check amazing Uchebnik Online content for Russia. Otherwise, check out these important facts you probably never knew about uchebnik-online.net
Сайт рассчитан на студентов высших учебных заведений (ВУЗ) Тут вы найдете много интересных учебников по дисциплинам.
Visit uchebnik-online.netWe analyzed Uchebnik-online.net page load time and found that the first response time was 1.5 sec and then it took 28.9 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster. Unfortunately, there was 1 request timeout, which can generally increase the web page load time, as the browser stays idle while waiting for website response.
uchebnik-online.net performance score
name
value
score
weighting
Value4.3 s
19/100
10%
Value5.3 s
22/100
25%
Value9.8 s
10/100
10%
Value1,640 ms
11/100
30%
Value0.327
35/100
15%
Value25.7 s
0/100
10%
1526 ms
1029 ms
138 ms
568 ms
356 ms
Our browser made a total of 137 requests to load all elements on the main page. We found that 89% of them (122 requests) were addressed to the original Uchebnik-online.net, 5% (7 requests) were made to Ajax.googleapis.com and 3% (4 requests) were made to Pagead2.googlesyndication.com. The less responsive or slowest element that took the longest time to load (20.1 sec) belongs to the original domain Uchebnik-online.net.
Page size can be reduced by 242.6 kB (66%)
367.9 kB
125.3 kB
In fact, the total size of Uchebnik-online.net main page is 367.9 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. 60% of websites need less resources to load. Javascripts take 230.8 kB which makes up the majority of the site volume.
Potential reduce by 96.4 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 96.4 kB or 86% of the original size.
Potential reduce by 2.2 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, Uchebnik Online needs image optimization as it can save up to 2.2 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 129.9 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 129.9 kB or 56% of the original size.
Potential reduce by 14.1 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. Uchebnik-online.net needs all CSS files to be minified and compressed as it can save up to 14.1 kB or 82% of the original size.
Number of requests can be reduced by 23 (18%)
130
107
The browser has sent 130 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Uchebnik Online. 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.
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uchebnik-online.net 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
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
Image elements do not have [alt] attributes
Links do not have a discernible name
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.
uchebnik-online.net best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Requests the notification permission on page load
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
uchebnik-online.net SEO score
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
UK
N/A
WINDOWS-1251
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Uchebnik-online.net can be misinterpreted by Google and other search engines. Our service has detected that Ukrainian 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 Uchebnik-online.net main page’s claimed encoding is windows-1251. 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.
uchebnik-online.net
Open Graph description is not detected on the main page of Uchebnik Online. 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: