15.2 sec in total
457 ms
12 sec
2.7 sec
Visit sci-book.com now to see the best up-to-date Sci Book content for Russia and also check out these interesting facts you probably never knew about sci-book.com
Научная литература, книги и учебники на портале sci-book.com для студентов и преподавателей
Visit sci-book.comWe analyzed Sci-book.com page load time and found that the first response time was 457 ms and then it took 14.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.
sci-book.com performance score
name
value
score
weighting
Value2.0 s
83/100
10%
Value2.0 s
97/100
25%
Value3.2 s
91/100
10%
Value620 ms
48/100
30%
Value0
100/100
15%
Value7.6 s
46/100
10%
457 ms
761 ms
28 ms
258 ms
66 ms
Our browser made a total of 51 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Sci-book.com, 24% (12 requests) were made to Sci.house and 14% (7 requests) were made to Widget.admitad.com. The less responsive or slowest element that took the longest time to load (10.5 sec) relates to the external source Mc.yandex.ru.
Page size can be reduced by 406.6 kB (42%)
972.9 kB
566.3 kB
In fact, the total size of Sci-book.com main page is 972.9 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. 35% of websites need less resources to load. Images take 350.7 kB which makes up the majority of the site volume.
Potential reduce by 243.1 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 243.1 kB or 82% of the original size.
Potential reduce by 528 B
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. Sci Book images are well optimized though.
Potential reduce by 156.0 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 156.0 kB or 49% of the original size.
Potential reduce by 7.0 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. Sci-book.com needs all CSS files to be minified and compressed as it can save up to 7.0 kB or 69% of the original size.
Number of requests can be reduced by 25 (52%)
48
23
The browser has sent 48 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sci Book. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 18 to 1 for JavaScripts and as a result speed up the page load time.
sci-book.com
457 ms
sci.house
761 ms
analytics.js
28 ms
widget.js
258 ms
adsbygoogle.js
66 ms
uch_08.jpg
293 ms
1303159122_diamonds_2.png
293 ms
bg_03.gif
294 ms
bg_men_main.gif
293 ms
kreditonline.jpg
292 ms
shadow.png
398 ms
uch_17.jpg
411 ms
book.png
422 ms
shadow_01.png
423 ms
collect
49 ms
ca-pub-7093721300735898.js
93 ms
zrt_lookup.html
82 ms
show_ads_impl.js
83 ms
uch_34.jpg
295 ms
uch_33.jpg
420 ms
ads
332 ms
osd.js
8 ms
init
154 ms
ads
328 ms
loader.js
194 ms
share.js
22 ms
ads
326 ms
watch.js
10430 ms
ads
289 ms
ya-share-cnt.html
18 ms
watch.js
189 ms
b-share-icon.png
51 ms
b-share_counter_small.png
50 ms
795 ms
share_count
607 ms
dk
740 ms
fql.query
171 ms
share.php
575 ms
prepare
160 ms
watch.js
10451 ms
layout
161 ms
css
57 ms
search.css
123 ms
jquery.js
361 ms
i
1262 ms
ad-logo.svg
121 ms
i
1518 ms
i
1648 ms
counter
261 ms
advert.gif
339 ms
1
87 ms
sci-book.com 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
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.
sci-book.com 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
sci-book.com 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
WINDOWS-1251
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Sci-book.com 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 Sci-book.com 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.
sci-book.com
Open Graph description is not detected on the main page of Sci Book. 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: