Tools & Wizards About Us
ds.library.ru screenshot

Report Summary

  • 18

    Performance

    Renders faster than
    34% of other websites

  • 75

    Accessibility

    Visual factors better than
    that of 41% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 90

    SEO

    Google-friendlier than
    68% of websites

ds.library.ru

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Page Load Speed

8.3 sec in total

First Response

426 ms

Resources Loaded

6 sec

Page Rendered

1.8 sec

ds.library.ru screenshot

About Website

Visit ds.library.ru now to see the best up-to-date Ds Library content for Russia and also check out these interesting facts you probably never knew about ds.library.ru

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Visit ds.library.ru

Key Findings

We analyzed Ds.library.ru page load time and found that the first response time was 426 ms and then it took 7.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

ds.library.ru performance score

18

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.7 s

5/100

10%

LCP (Largest Contentful Paint)

Value6.9 s

6/100

25%

SI (Speed Index)

Value14.6 s

1/100

10%

TBT (Total Blocking Time)

Value2,560 ms

4/100

30%

CLS (Cumulative Layout Shift)

Value0.004

100/100

15%

TTI (Time to Interactive)

Value48.5 s

0/100

10%

Network Requests Diagram

ds.library.ru

426 ms

ds.library.ru

577 ms

animate.css

1427 ms

bootstrap.min.css

434 ms

et-line-icons.css

441 ms

Our browser made a total of 122 requests to load all elements on the main page. We found that 89% of them (109 requests) were addressed to the original Ds.library.ru, 7% (9 requests) were made to Fonts.gstatic.com and 2% (2 requests) were made to Comicsguide.rgub.ru. The less responsive or slowest element that took the longest time to load (2.3 sec) belongs to the original domain Ds.library.ru.

Page Optimization Overview & Recommendations

Page size can be reduced by 441.0 kB (3%)

Content Size

15.2 MB

After Optimization

14.8 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Ds.library.ru main page is 15.2 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. Only a small number of websites need less resources to load. Images take 14.6 MB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 206.7 kB

  • Original 236.8 kB
  • After minification 170.9 kB
  • After compression 30.1 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 66.0 kB, which is 28% 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 206.7 kB or 87% of the original size.

Image Optimization

-1%

Potential reduce by 194.1 kB

  • Original 14.6 MB
  • After minification 14.4 MB

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. Ds Library images are well optimized though.

JavaScript Optimization

-11%

Potential reduce by 24.3 kB

  • Original 223.4 kB
  • After minification 223.4 kB
  • After compression 199.1 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 24.3 kB or 11% of the original size.

CSS Optimization

-10%

Potential reduce by 15.9 kB

  • Original 151.5 kB
  • After minification 151.5 kB
  • After compression 135.6 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. Ds.library.ru has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 47 (45%)

Requests Now

104

After Optimization

57

  • Images
  • JavaScript
  • CSS

The browser has sent 104 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ds Library. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 31 to 1 for JavaScripts and from 18 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

ds.library.ru

ds.library.ru

426 ms

ds.library.ru

ds.library.ru

577 ms

animate.css

animate.css

1427 ms

bootstrap.min.css

bootstrap.min.css

434 ms

et-line-icons.css

et-line-icons.css

441 ms

et-line-icons.css

et-line-icons.css

440 ms

themify-icons.css

themify-icons.css

417 ms

font-awesome.min.css

font-awesome.min.css

442 ms

swiper.min.css

swiper.min.css

826 ms

justified-gallery.min.css

justified-gallery.min.css

848 ms

magnific-popup.css

magnific-popup.css

834 ms

settings.css

settings.css

845 ms

layers.css

layers.css

859 ms

navigation.css

navigation.css

1240 ms

bootsnav.css

bootsnav.css

1271 ms

style2.css

style2.css

1253 ms

responsive.css

responsive.css

1272 ms

flscns.css

flscns.css

1282 ms

addition.css

addition.css

1647 ms

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1280 ms

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1282 ms

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1293 ms

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1298 ms

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1297 ms

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1311 ms

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1310 ms

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1314 ms

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book_01_new.jpg

1324 ms

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1391 ms

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book_03_new.jpg

1323 ms

book_04_new.jpg

book_04_new.jpg

1336 ms

book_05_new.jpg

book_05_new.jpg

1337 ms

logo_sm-1-7-2.png

logo_sm-1-7-2.png

405 ms

email-decode.min.js

email-decode.min.js

1326 ms

logo_sm-1-7-2.png

logo_sm-1-7-2.png

556 ms

jquery.js

jquery.js

1324 ms

modernizr.js

modernizr.js

1309 ms

bootstrap.min.js

bootstrap.min.js

1316 ms

jquery.easing.1.3.js

jquery.easing.1.3.js

1380 ms

smooth-scroll.js

smooth-scroll.js

1392 ms

jquery.appear.js

jquery.appear.js

1216 ms

bootsnav.js

bootsnav.js

1323 ms

jquery.nav.js

jquery.nav.js

1314 ms

wow.min.js

wow.min.js

1316 ms

page-scroll.js

page-scroll.js

1354 ms

swiper.min.js

swiper.min.js

1000 ms

css

css

46 ms

css

css

65 ms

fonts.css

fonts.css

1183 ms

jquery.count-to.js

jquery.count-to.js

1332 ms

jquery.stellar.js

jquery.stellar.js

1331 ms

jquery.magnific-popup.min.js

jquery.magnific-popup.min.js

1329 ms

isotope.pkgd.min.js

isotope.pkgd.min.js

1371 ms

imagesloaded.pkgd.min.js

imagesloaded.pkgd.min.js

1528 ms

classie.js

classie.js

1589 ms

hamburger-menu.js

hamburger-menu.js

1668 ms

counter.js

counter.js

1689 ms

jquery.fitvids.js

jquery.fitvids.js

1674 ms

equalize.min.js

equalize.min.js

1744 ms

skill.bars.jquery.js

skill.bars.jquery.js

1905 ms

justified-gallery.min.js

justified-gallery.min.js

1971 ms

jquery.easypiechart.min.js

jquery.easypiechart.min.js

2057 ms

instafeed.min.js

instafeed.min.js

2070 ms

retina.min.js

retina.min.js

2060 ms

jquery.themepunch.tools.min.js

jquery.themepunch.tools.min.js

2130 ms

jquery.themepunch.revolution.min.js

jquery.themepunch.revolution.min.js

2290 ms

main.js

main.js

2349 ms

book_06_new.jpg

book_06_new.jpg

2050 ms

book_07_new.jpg

book_07_new.jpg

2049 ms

book_08_new.jpg

book_08_new.jpg

2055 ms

book_14.jpg

book_14.jpg

2002 ms

book_08.jpg

book_08.jpg

1986 ms

book_09.jpg

book_09.jpg

1767 ms

book_06.jpg

book_06.jpg

1673 ms

book_02.jpg

book_02.jpg

1681 ms

book_04.jpg

book_04.jpg

1679 ms

1.png

1.png

1743 ms

2.png

2.png

2046 ms

3.png

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1838 ms

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1722 ms

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1835 ms

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1625 ms

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1876 ms

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1696 ms

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1653 ms

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1651 ms

header_sch3.jpg

header_sch3.jpg

1267 ms

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JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCtr6Hw5aXx-p7K4GLs.woff

96 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCtZ6Hw5aXx-p7K4GLs.woff

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCtZ6Hw5aXx-p7K4GLs.woff

97 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCs16Hw5aXx-p7K4GLs.woff

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCs16Hw5aXx-p7K4GLs.woff

169 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCvr6Hw5aXx-p7K4GLs.woff

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCvr6Hw5aXx-p7K4GLs.woff

186 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCtr6Xw5aXx-p7K4GLs.woff

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCtr6Xw5aXx-p7K4GLs.woff

189 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCu173w5aXx-p7K4GLs.woff

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188 ms

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188 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCvr73w5aXx-p7K4GLs.woff

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCvr73w5aXx-p7K4GLs.woff

189 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCvC73w5aXx-p7K4GLs.woff

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCvC73w5aXx-p7K4GLs.woff

187 ms

themify.woff%3F-fvbane

themify.woff%3F-fvbane

1904 ms

fa-brands-400.woff

fa-brands-400.woff

1883 ms

fa-solid-900.woff

fa-solid-900.woff

1872 ms

fa-regular-400.woff

fa-regular-400.woff

1746 ms

header_sch.jpg

header_sch.jpg

1319 ms

succsess7.jpg

succsess7.jpg

1329 ms

succsess8.jpg

succsess8.jpg

1326 ms

succsess6.jpg

succsess6.jpg

1282 ms

succsess4.jpg

succsess4.jpg

1120 ms

arrow-next-light-dark.png

arrow-next-light-dark.png

1467 ms

arrow-prev-light-dark.png

arrow-prev-light-dark.png

1372 ms

sep55.jpg

sep55.jpg

1210 ms

succsess3.jpg

succsess3.jpg

1204 ms

succsess9.jpg

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1216 ms

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sep66.jpg

1230 ms

sep_6_2.jpg

sep_6_2.jpg

1284 ms

icon-move-black.png

icon-move-black.png

1606 ms

sep3.jpg

sep3.jpg

1272 ms

sep7.jpg

sep7.jpg

1273 ms

sep8.jpg

sep8.jpg

1274 ms

main.js

main.js

51 ms

Accessibility Review

ds.library.ru accessibility score

75

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

High

Links do not have a discernible name

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

ds.library.ru best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

ds.library.ru SEO score

90

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

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

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Ds.library.ru can be misinterpreted by Google and other search engines. Our service has detected that English 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 Ds.library.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.

Social Sharing Optimization

ds.library.ru

Open Graph description is not detected on the main page of Ds Library. 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: