4.6 sec in total
776 ms
3.4 sec
391 ms
Click here to check amazing Vdonlib content for Russia. Otherwise, check out these important facts you probably never knew about vdonlib.ru
Visit vdonlib.ruWe analyzed Vdonlib.ru page load time and found that the first response time was 776 ms and then it took 3.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.
vdonlib.ru performance score
name
value
score
weighting
Value6.5 s
2/100
10%
Value13.3 s
0/100
25%
Value13.8 s
1/100
10%
Value4,830 ms
0/100
30%
Value0.078
95/100
15%
Value27.0 s
0/100
10%
776 ms
391 ms
321 ms
227 ms
227 ms
Our browser made a total of 66 requests to load all elements on the main page. We found that 89% of them (59 requests) were addressed to the original Vdonlib.ru, 5% (3 requests) were made to All.culture.ru and 2% (1 request) were made to Vk.com. The less responsive or slowest element that took the longest time to load (1.7 sec) belongs to the original domain Vdonlib.ru.
Page size can be reduced by 425.3 kB (30%)
1.4 MB
986.8 kB
In fact, the total size of Vdonlib.ru main page is 1.4 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. 30% of websites need less resources to load. Images take 937.2 kB which makes up the majority of the site volume.
Potential reduce by 55.2 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 55.2 kB or 78% of the original size.
Potential reduce by 95.7 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. Vdonlib images are well optimized though.
Potential reduce by 274.4 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 274.4 kB or 68% of the original size.
Number of requests can be reduced by 19 (30%)
63
44
The browser has sent 63 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Vdonlib. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and as a result speed up the page load time.
vdonlib.ru
776 ms
openapi.js
391 ms
jquery.1.1.4.pack.js
321 ms
jquery-easing.1.1.1.pack.js
227 ms
coda-slider.1.0.js
227 ms
api.js
716 ms
bg0.gif
191 ms
bg1.gif
190 ms
logo.gif
194 ms
logo1.gif
194 ms
menuli.gif
197 ms
bg3.gif
197 ms
Elect_catalog.gif
474 ms
reserv_book.gif
382 ms
prolong_book.gif
381 ms
electronic_delivery.gif
387 ms
volg_question.gif
394 ms
search.gif
395 ms
p_11714.jpg
573 ms
p_11746.jpg
582 ms
p_11724.jpg
656 ms
p_11715.jpg
583 ms
p_11748.jpg
585 ms
login1.gif
671 ms
login2.gif
779 ms
login3.gif
804 ms
11096.jpg
1106 ms
wi-fi.gif
807 ms
Litres.gif
867 ms
complect.gif
871 ms
8540.jpg
979 ms
4593.jpg
1175 ms
1933.jpg
1000 ms
3773.jpg
1166 ms
8341.jpg
1077 ms
10387.jpg
1262 ms
chasy.png
1295 ms
1757.jpg
1279 ms
3547.jpg
1399 ms
981.jpg
1356 ms
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1462 ms
3850.jpg
1463 ms
CiOcvbya2G
180 ms
i3gf1pqxwgwv2qnu
573 ms
4882.jpg
1425 ms
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1311 ms
4881.jpg
1480 ms
10165.jpg
1500 ms
1795.jpg
1475 ms
1796.jpg
1484 ms
widget_ru_RU.js
214 ms
down.gif
1311 ms
3354.jpg
1531 ms
3356.jpg
1617 ms
3358.jpg
1707 ms
10959.jpg
1614 ms
bg2.gif
1417 ms
nmgod3xzmm3kl6yq
148 ms
bg.jpg
1483 ms
li.gif
1540 ms
calendbg.gif
1560 ms
downbg.gif
1609 ms
counter
325 ms
svwloader.gif
100 ms
arrow-left.gif
193 ms
arrow-right.gif
194 ms
vdonlib.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
<frame> or <iframe> elements do not have a title
Image elements do not have [alt] attributes
Links do not have a discernible name
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
vdonlib.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
vdonlib.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
RU
N/A
WINDOWS-1251
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Vdonlib.ru can be misinterpreted by Google and other search engines. Our service has detected that Russian 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 Vdonlib.ru 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.
vdonlib.ru
Open Graph description is not detected on the main page of Vdonlib. 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: