Tools & Wizards About Us
ds.library.ru screenshot

Report Summary

  • 21

    Performance

    Renders faster than
    39% 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

  • 92

    SEO

    Google-friendlier than
    74% of websites

ds.library.ru

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Page Load Speed

16.3 sec in total

First Response

300 ms

Resources Loaded

13.1 sec

Page Rendered

2.9 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 300 ms and then it took 16 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster.

Performance Metrics

ds.library.ru performance score

21

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.7 s

5/100

10%

LCP (Largest Contentful Paint)

Value6.6 s

8/100

25%

SI (Speed Index)

Value13.8 s

1/100

10%

TBT (Total Blocking Time)

Value1,580 ms

12/100

30%

CLS (Cumulative Layout Shift)

Value0.004

100/100

15%

TTI (Time to Interactive)

Value49.5 s

0/100

10%

Network Requests Diagram

ds.library.ru

300 ms

ds.library.ru

887 ms

animate.css

571 ms

bootstrap.min.css

777 ms

et-line-icons.css

482 ms

Our browser made a total of 114 requests to load all elements on the main page. We found that 96% of them (109 requests) were addressed to the original Ds.library.ru, 2% (2 requests) were made to Comicsguide.rgub.ru and 2% (2 requests) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (4.8 sec) belongs to the original domain Ds.library.ru.

Page Optimization Overview & Recommendations

Page size can be reduced by 434.9 kB (3%)

Content Size

17.2 MB

After Optimization

16.8 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Ds.library.ru main page is 17.2 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. 70% of websites need less resources to load. Images take 16.6 MB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 200.6 kB

  • Original 231.7 kB
  • After minification 170.7 kB
  • After compression 31.1 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 61.0 kB, which is 26% 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 200.6 kB or 87% of the original size.

Image Optimization

-1%

Potential reduce by 194.8 kB

  • Original 16.6 MB
  • After minification 16.4 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 24.1 kB

  • Original 223.3 kB
  • After minification 223.3 kB
  • After compression 199.2 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 24.1 kB or 11% of the original size.

CSS Optimization

-10%

Potential reduce by 15.4 kB

  • Original 150.7 kB
  • After minification 150.7 kB
  • After compression 135.3 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

105

After Optimization

58

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 105 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

300 ms

ds.library.ru

ds.library.ru

887 ms

animate.css

animate.css

571 ms

bootstrap.min.css

bootstrap.min.css

777 ms

et-line-icons.css

et-line-icons.css

482 ms

et-line-icons.css

et-line-icons.css

485 ms

themify-icons.css

themify-icons.css

689 ms

font-awesome.min.css

font-awesome.min.css

1161 ms

swiper.min.css

swiper.min.css

1036 ms

justified-gallery.min.css

justified-gallery.min.css

1002 ms

magnific-popup.css

magnific-popup.css

1046 ms

settings.css

settings.css

1303 ms

layers.css

layers.css

1651 ms

navigation.css

navigation.css

1724 ms

bootsnav.css

bootsnav.css

1707 ms

style2.css

style2.css

1942 ms

responsive.css

responsive.css

2099 ms

flscns.css

flscns.css

1799 ms

addition.css

addition.css

2064 ms

32.jpg

32.jpg

2287 ms

19.jpg

19.jpg

2044 ms

16.jpg

16.jpg

2258 ms

22.jpg

22.jpg

2502 ms

17.jpg

17.jpg

2517 ms

31.jpg

31.jpg

2458 ms

11.jpg

11.jpg

2815 ms

33.jpg

33.jpg

3219 ms

14.jpg

14.jpg

3040 ms

4.jpg

4.jpg

3089 ms

5.jpg

5.jpg

3143 ms

7.jpg

7.jpg

3283 ms

30.jpg

30.jpg

3416 ms

book_01.jpg

book_01.jpg

3833 ms

book_02.jpg

book_02.jpg

3878 ms

book_03.jpg

book_03.jpg

3984 ms

book_04.jpg

book_04.jpg

3602 ms

book_05.jpg

book_05.jpg

4232 ms

logo_sm-1-7-2.png

logo_sm-1-7-2.png

293 ms

email-decode.min.js

email-decode.min.js

3344 ms

jquery.js

jquery.js

4486 ms

modernizr.js

modernizr.js

4216 ms

bootstrap.min.js

bootstrap.min.js

4278 ms

logo_sm-1-7-2.png

logo_sm-1-7-2.png

345 ms

jquery.easing.1.3.js

jquery.easing.1.3.js

4032 ms

smooth-scroll.js

smooth-scroll.js

4016 ms

jquery.appear.js

jquery.appear.js

3976 ms

bootsnav.js

bootsnav.js

4165 ms

jquery.nav.js

jquery.nav.js

4191 ms

wow.min.js

wow.min.js

4149 ms

page-scroll.js

page-scroll.js

4054 ms

swiper.min.js

swiper.min.js

4231 ms

jquery.count-to.js

jquery.count-to.js

3736 ms

jquery.stellar.js

jquery.stellar.js

4161 ms

jquery.magnific-popup.min.js

jquery.magnific-popup.min.js

4090 ms

css

css

34 ms

css

css

46 ms

fonts.css

fonts.css

3728 ms

isotope.pkgd.min.js

isotope.pkgd.min.js

3964 ms

imagesloaded.pkgd.min.js

imagesloaded.pkgd.min.js

3773 ms

classie.js

classie.js

3756 ms

hamburger-menu.js

hamburger-menu.js

3560 ms

counter.js

counter.js

3566 ms

jquery.fitvids.js

jquery.fitvids.js

3621 ms

equalize.min.js

equalize.min.js

3427 ms

skill.bars.jquery.js

skill.bars.jquery.js

3655 ms

justified-gallery.min.js

justified-gallery.min.js

3487 ms

jquery.easypiechart.min.js

jquery.easypiechart.min.js

3018 ms

instafeed.min.js

instafeed.min.js

3159 ms

retina.min.js

retina.min.js

3185 ms

jquery.themepunch.tools.min.js

jquery.themepunch.tools.min.js

3725 ms

jquery.themepunch.revolution.min.js

jquery.themepunch.revolution.min.js

3455 ms

main.js

main.js

3632 ms

book_06.jpg

book_06.jpg

3776 ms

book_07.jpg

book_07.jpg

3359 ms

book_08.jpg

book_08.jpg

3130 ms

book_09.jpg

book_09.jpg

3143 ms

book_10.jpg

book_10.jpg

3610 ms

book_11.jpg

book_11.jpg

3370 ms

book_12.jpg

book_12.jpg

3329 ms

book_13.jpg

book_13.jpg

3383 ms

book_14.jpg

book_14.jpg

3352 ms

1.png

1.png

3330 ms

2.png

2.png

3417 ms

3.png

3.png

3335 ms

4.png

4.png

3407 ms

8.png

8.png

3628 ms

5.png

5.png

3536 ms

6.png

6.png

3645 ms

7.png

7.png

3384 ms

9.png

9.png

3230 ms

10.png

10.png

3229 ms

header_sch3.jpg

header_sch3.jpg

3332 ms

header_sch.jpg

header_sch.jpg

3902 ms

font

font

121 ms

themify.woff%3F-fvbane

themify.woff%3F-fvbane

3700 ms

fa-brands-400.woff

fa-brands-400.woff

3581 ms

fa-solid-900.woff

fa-solid-900.woff

3662 ms

fa-regular-400.woff

fa-regular-400.woff

3559 ms

succsess7.jpg

succsess7.jpg

4073 ms

succsess8.jpg

succsess8.jpg

4164 ms

succsess6.jpg

succsess6.jpg

4265 ms

succsess4.jpg

succsess4.jpg

4435 ms

arrow-next-light-dark.png

arrow-next-light-dark.png

3432 ms

arrow-prev-light-dark.png

arrow-prev-light-dark.png

3619 ms

sep55.jpg

sep55.jpg

4487 ms

succsess3.jpg

succsess3.jpg

4400 ms

succsess9.jpg

succsess9.jpg

4013 ms

sep66.jpg

sep66.jpg

4174 ms

sep_6_2.jpg

sep_6_2.jpg

4359 ms

icon-move-black.png

icon-move-black.png

3946 ms

sep3.jpg

sep3.jpg

4832 ms

sep7.jpg

sep7.jpg

4767 ms

sep8.jpg

sep8.jpg

4311 ms

main.js

main.js

167 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

92

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

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: