3.4 sec in total
616 ms
2.4 sec
368 ms
Click here to check amazing Uchebniki Online content for Ukraine. Otherwise, check out these important facts you probably never knew about uchebniki-online.net
Онлайн учебники - книги, содержащие основы научных знаний по учебным дисциплинам: математике, английскому, украинскому языку, биологии, географии, истории, физики, химии.
Visit uchebniki-online.netWe analyzed Uchebniki-online.net page load time and found that the first response time was 616 ms and then it took 2.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.
uchebniki-online.net performance score
name
value
score
weighting
Value2.1 s
80/100
10%
Value6.2 s
11/100
25%
Value5.1 s
61/100
10%
Value2,910 ms
3/100
30%
Value0.904
3/100
15%
Value6.7 s
56/100
10%
616 ms
390 ms
382 ms
254 ms
385 ms
Our browser made a total of 71 requests to load all elements on the main page. We found that 39% of them (28 requests) were addressed to the original Uchebniki-online.net, 18% (13 requests) were made to Vk.com and 11% (8 requests) were made to Pagead2.googlesyndication.com. The less responsive or slowest element that took the longest time to load (774 ms) belongs to the original domain Uchebniki-online.net.
Page size can be reduced by 476.3 kB (39%)
1.2 MB
730.0 kB
In fact, the total size of Uchebniki-online.net main page is 1.2 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. Images take 649.7 kB which makes up the majority of the site volume.
Potential reduce by 63.1 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. 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 63.1 kB or 85% of the original size.
Potential reduce by 63.8 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. Uchebniki Online images are well optimized though.
Potential reduce by 256.1 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 256.1 kB or 70% of the original size.
Potential reduce by 93.4 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. Uchebniki-online.net needs all CSS files to be minified and compressed as it can save up to 93.4 kB or 82% of the original size.
Number of requests can be reduced by 29 (44%)
66
37
The browser has sent 66 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Uchebniki 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 20 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.
uchebniki-online.net
616 ms
index.php
390 ms
styles.css
382 ms
engine.css
254 ms
jquery.liMarquee.js
385 ms
jquery.bxslider.min.js
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libs.js
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openapi.js
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share.js
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analytics.js
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bg.png
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logo.png
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upload.gif
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collect
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zrt_lookup.html
39 ms
show_ads_impl.js
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widget_community.php
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ads
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osd.js
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1
86 ms
uchebniki-online.net 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.
uchebniki-online.net best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
uchebniki-online.net 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
RU
RU
WINDOWS-1251
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Uchebniki-online.net 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 Uchebniki-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.
uchebniki-online.net
Open Graph description is not detected on the main page of Uchebniki 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: