Tools & Wizards About Us
dzlib.ru screenshot

Report Summary

  • 35

    Performance

    Renders faster than
    55% of other websites

  • 83

    Accessibility

    Visual factors better than
    that of 54% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

dzlib.ru

Новости и события библиотечной жизни :: Централизованная библиотечная система г.Дзержинска

Page Load Speed

9 sec in total

First Response

2.4 sec

Resources Loaded

6.2 sec

Page Rendered

453 ms

dzlib.ru screenshot

About Website

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

Централизованная библиотечная система г. Дзержинска: новости и события библиотечной жизни, информация о городских библиотеках, электронный каталог, новинки литературы, музеи, краеведческий материал

Visit dzlib.ru

Key Findings

We analyzed Dzlib.ru page load time and found that the first response time was 2.4 sec and then it took 6.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

dzlib.ru performance score

35

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.7 s

12/100

10%

LCP (Largest Contentful Paint)

Value9.7 s

0/100

25%

SI (Speed Index)

Value12.5 s

3/100

10%

TBT (Total Blocking Time)

Value560 ms

53/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value9.9 s

27/100

10%

Network Requests Diagram

dzlib.ru

2384 ms

jquery.js

1946 ms

uhpv-full.min.js

1378 ms

jcemediabox.css

412 ms

jcemediabox_ie6.css

283 ms

Our browser made a total of 93 requests to load all elements on the main page. We found that 85% of them (79 requests) were addressed to the original Dzlib.ru, 3% (3 requests) were made to Pos.gosuslugi.ru and 2% (2 requests) were made to Lidrekon.ru. The less responsive or slowest element that took the longest time to load (2.4 sec) belongs to the original domain Dzlib.ru.

Page Optimization Overview & Recommendations

Page size can be reduced by 322.6 kB (27%)

Content Size

1.2 MB

After Optimization

887.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Dzlib.ru main page is 1.2 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. 40% of websites need less resources to load. Images take 741.3 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 62.9 kB

  • Original 78.5 kB
  • After minification 76.8 kB
  • After compression 15.6 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 62.9 kB or 80% of the original size.

Image Optimization

-7%

Potential reduce by 55.0 kB

  • Original 741.3 kB
  • After minification 686.3 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. Dzlib images are well optimized though.

JavaScript Optimization

-48%

Potential reduce by 160.5 kB

  • Original 336.9 kB
  • After minification 334.3 kB
  • After compression 176.4 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 160.5 kB or 48% of the original size.

CSS Optimization

-83%

Potential reduce by 44.2 kB

  • Original 53.0 kB
  • After minification 40.4 kB
  • After compression 8.8 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. Dzlib.ru needs all CSS files to be minified and compressed as it can save up to 44.2 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 33 (36%)

Requests Now

91

After Optimization

58

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 91 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Dzlib. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 15 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

dzlib.ru

dzlib.ru

2384 ms

jquery.js

jquery.js

1946 ms

uhpv-full.min.js

uhpv-full.min.js

1378 ms

jcemediabox.css

jcemediabox.css

412 ms

jcemediabox_ie6.css

jcemediabox_ie6.css

283 ms

style.css

style.css

416 ms

style_ie6.css

style_ie6.css

277 ms

jcemediabox.js

jcemediabox.js

687 ms

mediaobject.js

mediaobject.js

286 ms

default.js

default.js

424 ms

mootools.js

mootools.js

821 ms

caption.js

caption.js

424 ms

system.css

system.css

424 ms

general.css

general.css

551 ms

template.css

template.css

972 ms

style.css

style.css

564 ms

jquery.js

jquery.js

970 ms

script.js

script.js

691 ms

spxl.js

spxl.js

947 ms

js

js

64 ms

script.min.js

script.min.js

752 ms

ga.js

ga.js

29 ms

15.png

15.png

505 ms

3_0_EC2020FF_CC0000FF_1_pageviews

3_0_EC2020FF_CC0000FF_1_pageviews

1111 ms

45.jpg

45.jpg

503 ms

1.png

1.png

497 ms

02.png

02.png

502 ms

3.png

3.png

500 ms

30.png

30.png

499 ms

38.jpg

38.jpg

1104 ms

44.jpg

44.jpg

1105 ms

31.png

31.png

1106 ms

49.jpg

49.jpg

1108 ms

47.png

47.png

1106 ms

29.png

29.png

1108 ms

33.png

33.png

1143 ms

3.jpg

3.jpg

1143 ms

13.jpg

13.jpg

1144 ms

43.png

43.png

1145 ms

46.jpg

46.jpg

1142 ms

27.png

27.png

1142 ms

2.jpg

2.jpg

1269 ms

34.png

34.png

1268 ms

1.jpg

1.jpg

1264 ms

14.png

14.png

1266 ms

4.png

4.png

1268 ms

5.png

5.png

1266 ms

8.png

8.png

1405 ms

7.png

7.png

1409 ms

9.jpg

9.jpg

1413 ms

21.png

21.png

1410 ms

24.jpg

24.jpg

1410 ms

tag.js

tag.js

1125 ms

gosuslugi-logo-blue.svg

gosuslugi-logo-blue.svg

123 ms

1.png

1.png

1388 ms

2.png

2.png

1522 ms

01.jpg

01.jpg

1534 ms

496.jpg

496.jpg

1532 ms

01.jpg

01.jpg

1535 ms

01.jpg

01.jpg

1534 ms

01.jpg

01.jpg

1534 ms

entry.js

entry.js

1151 ms

__utm.gif

__utm.gif

12 ms

Lato-Regular.woff

Lato-Regular.woff

997 ms

popup.html

popup.html

1185 ms

tooltip.html

tooltip.html

1199 ms

01.jpg

01.jpg

1208 ms

175.jpg

175.jpg

1206 ms

174.jpg

174.jpg

1197 ms

01.jpg

01.jpg

1204 ms

0173.jpg

0173.jpg

717 ms

01.jpg

01.jpg

730 ms

Bottom_texture.jpg

Bottom_texture.jpg

871 ms

sheet_s.png

sheet_s.png

739 ms

sheet_h.png

sheet_h.png

736 ms

sheet_v.png

sheet_v.png

736 ms

header.png

header.png

950 ms

header.jpg

header.jpg

1103 ms

nav.png

nav.png

839 ms

menuitem.png

menuitem.png

841 ms

spacer.gif

spacer.gif

842 ms

subitem.png

subitem.png

906 ms

advert.gif

advert.gif

721 ms

button.png

button.png

858 ms

vmenublock_s.png

vmenublock_s.png

858 ms

vmenublock_h.png

vmenublock_h.png

858 ms

vmenublock_v.png

vmenublock_v.png

960 ms

vmenuitem.png

vmenuitem.png

987 ms

footer_s.png

footer_s.png

992 ms

footer_b.png

footer_b.png

860 ms

zoom-img.png

zoom-img.png

856 ms

menuseparator.png

menuseparator.png

954 ms

sync_cookie_image_decide

sync_cookie_image_decide

161 ms

Accessibility Review

dzlib.ru accessibility score

83

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.

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

Form elements do not have associated labels

Best Practices

dzlib.ru best practices score

58

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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

dzlib.ru SEO score

77

Search Engine Optimization Advices

Language and Encoding

  • Language Detected

    RU

  • Language Claimed

    RU

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Dzlib.ru can be misinterpreted by Google and other search engines. Our service has detected that Russian is used on the page, and it matches the claimed language. Our system also found out that Dzlib.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

dzlib.ru

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