Tools & Wizards About Us

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

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

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

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: