121.5 sec in total
1 sec
119.5 sec
902 ms
Click here to check amazing Ostrovlib content for Russia. Otherwise, check out these important facts you probably never knew about ostrovlib.ru
ЦБС для детей им. Н. Островского
Visit ostrovlib.ruWe analyzed Ostrovlib.ru page load time and found that the first response time was 1 sec and then it took 120.4 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 were 122 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.
ostrovlib.ru performance score
name
value
score
weighting
Value16.9 s
0/100
10%
Value18.7 s
0/100
25%
Value21.1 s
0/100
10%
Value1,480 ms
14/100
30%
Value0.229
54/100
15%
Value35.7 s
0/100
10%
1046 ms
380 ms
753 ms
1961 ms
786 ms
Our browser made a total of 290 requests to load all elements on the main page. We found that 99% of them (287 requests) were addressed to the original Ostrovlib.ru, 0% (1 request) were made to Bs.yandex.ru and 0% (1 request) were made to Mc.yandex.ru. The less responsive or slowest element that took the longest time to load (20.5 sec) belongs to the original domain Ostrovlib.ru.
Page size can be reduced by 1.1 MB (4%)
27.8 MB
26.7 MB
In fact, the total size of Ostrovlib.ru main page is 27.8 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. 50% of websites need less resources to load. Images take 27.4 MB which makes up the majority of the site volume.
Potential reduce by 50.1 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 9.7 kB, which is 16% 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 50.1 kB or 81% of the original size.
Potential reduce by 781.2 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. Ostrovlib images are well optimized though.
Potential reduce by 244.2 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 244.2 kB or 77% of the original size.
Potential reduce by 8.6 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. Ostrovlib.ru needs all CSS files to be minified and compressed as it can save up to 8.6 kB or 82% of the original size.
Number of requests can be reduced by 14 (9%)
153
139
The browser has sent 153 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ostrovlib. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and as a result speed up the page load time.
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ostrovlib.ru 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.
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
Form elements do not have associated labels
Links do not have a discernible name
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
Tables and lists
These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.
Impact
Issue
Lists do not contain only <li> elements and script supporting elements (<script> and <template>).
ostrovlib.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
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Page has valid source maps
Issues were logged in the Issues panel in Chrome Devtools
ostrovlib.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
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Ostrovlib.ru can be misinterpreted by Google and other search engines. Our service has detected that Russian is used on the page, and it does not match the claimed English language. Our system also found out that Ostrovlib.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.
ostrovlib.ru
Open Graph description is not detected on the main page of Ostrovlib. 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: