Tools & Wizards About Us
lbz.ru screenshot

Report Summary

  • 28

    Performance

    Renders faster than
    47% of other websites

  • 64

    Accessibility

    Visual factors better than
    that of 29% of websites

  • 50

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 62

    SEO

    Google-friendlier than
    23% of websites

lbz.ru

Издательство «БИНОМ. Лаборатория знаний». Каталог изданий. Сотрудничество с авторами.

Page Load Speed

5.5 sec in total

First Response

562 ms

Resources Loaded

4.7 sec

Page Rendered

307 ms

lbz.ru screenshot

About Website

Welcome to lbz.ru homepage info - get ready to check Lbz best content for Russia right away, or after learning these important things about lbz.ru

Наше издательство специализируется на выпуске качественной научной, справочной, учебной и методической литературы. Наши книги пользуются заслуженным признанием среди школьников, студентов, преподавате...

Visit lbz.ru

Key Findings

We analyzed Lbz.ru page load time and found that the first response time was 562 ms and then it took 5 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

lbz.ru performance score

28

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.4 s

16/100

10%

LCP (Largest Contentful Paint)

Value4.4 s

39/100

25%

SI (Speed Index)

Value7.3 s

29/100

10%

TBT (Total Blocking Time)

Value930 ms

30/100

30%

CLS (Cumulative Layout Shift)

Value0.456

19/100

15%

TTI (Time to Interactive)

Value11.0 s

20/100

10%

Network Requests Diagram

lbz.ru

562 ms

lbz.ru

1210 ms

core.min.css

121 ms

ui.font.opensans.min.css

249 ms

main.popup.bundle.min.css

372 ms

Our browser made a total of 89 requests to load all elements on the main page. We found that 74% of them (66 requests) were addressed to the original Lbz.ru, 4% (4 requests) were made to Top-fwz1.mail.ru and 3% (3 requests) were made to Site.yandex.net. The less responsive or slowest element that took the longest time to load (1.2 sec) belongs to the original domain Lbz.ru.

Page Optimization Overview & Recommendations

Page size can be reduced by 176.2 kB (17%)

Content Size

1.0 MB

After Optimization

855.6 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Lbz.ru main page is 1.0 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. 55% of websites need less resources to load. Images take 552.5 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 81.3 kB

  • Original 107.1 kB
  • After minification 98.2 kB
  • After compression 25.8 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 81.3 kB or 76% of the original size.

Image Optimization

-10%

Potential reduce by 55.3 kB

  • Original 552.5 kB
  • After minification 497.2 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. Lbz images are well optimized though.

JavaScript Optimization

-10%

Potential reduce by 34.1 kB

  • Original 353.9 kB
  • After minification 353.2 kB
  • After compression 319.8 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. This website has mostly compressed JavaScripts.

CSS Optimization

-30%

Potential reduce by 5.5 kB

  • Original 18.4 kB
  • After minification 18.4 kB
  • After compression 12.8 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. Lbz.ru needs all CSS files to be minified and compressed as it can save up to 5.5 kB or 30% of the original size.

Requests Breakdown

Number of requests can be reduced by 41 (48%)

Requests Now

85

After Optimization

44

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 85 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Lbz. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 24 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

lbz.ru

lbz.ru

562 ms

lbz.ru

lbz.ru

1210 ms

core.min.css

core.min.css

121 ms

ui.font.opensans.min.css

ui.font.opensans.min.css

249 ms

main.popup.bundle.min.css

main.popup.bundle.min.css

372 ms

window.css

window.css

489 ms

page_79ea761480e308517dadd8739a736422_v1.css

page_79ea761480e308517dadd8739a736422_v1.css

493 ms

template_a12a13dbca9ef99c8cebc91fbfc060bb_v1.css

template_a12a13dbca9ef99c8cebc91fbfc060bb_v1.css

495 ms

core.min.js

core.min.js

837 ms

dynamic.min.js

dynamic.min.js

546 ms

jquery-1.9.1.min.js

jquery-1.9.1.min.js

645 ms

main.popup.bundle.min.js

main.popup.bundle.min.js

729 ms

error.js

error.js

612 ms

template_48ecbfedbce2ca7b6bf0a07afcb8520c_v1.js

template_48ecbfedbce2ca7b6bf0a07afcb8520c_v1.js

620 ms

jquery.min.js

jquery.min.js

25 ms

jquery.cookie.js

jquery.cookie.js

669 ms

owl.carousel.min.js

owl.carousel.min.js

732 ms

js

js

66 ms

openapi.c340c125c61ec5745ebb2a98626e46ab.js

openapi.c340c125c61ec5745ebb2a98626e46ab.js

209 ms

ba.js

ba.js

304 ms

watch.js

watch.js

38 ms

b06_rus.gif

b06_rus.gif

1119 ms

1x1.gif

1x1.gif

155 ms

logo.png

logo.png

181 ms

garm2.png

garm2.png

296 ms

sed2.png

sed2.png

155 ms

mp2.jpg

mp2.jpg

193 ms

zank2.jpg

zank2.jpg

217 ms

bd2.png

bd2.png

294 ms

vkontakte2.png

vkontakte2.png

297 ms

youtube2.png

youtube2.png

297 ms

phone2.png

phone2.png

329 ms

email2.png

email2.png

341 ms

lupa.gif

lupa.gif

403 ms

zip.gif

zip.gif

433 ms

logo-prosvechenie.jpg

logo-prosvechenie.jpg

413 ms

loglosnt.jpg

loglosnt.jpg

410 ms

logo-maro.jpg

logo-maro.jpg

478 ms

logo-21vek.jpg

logo-21vek.jpg

460 ms

labzna1.jpg

labzna1.jpg

543 ms

logo-iuo.jpg

logo-iuo.jpg

536 ms

logo-rusere.jpg

logo-rusere.jpg

541 ms

liogo-sch2000.jpg

liogo-sch2000.jpg

576 ms

vesti-obr.jpg

vesti-obr.jpg

609 ms

orphus.png

orphus.png

623 ms

%D0%B1%D0%B0%D0%BD%D0%BD%D0%B5%D1%80_%D0%BA%D1%83%D1%80%D1%81%D1%8B_%D0%BF%D1%80%D0%BE%D1%81%D0%B2%D0%B5%D1%89%D0%B5%D0%BD%D0%B8%D0%B5.PNG

%D0%B1%D0%B0%D0%BD%D0%BD%D0%B5%D1%80_%D0%BA%D1%83%D1%80%D1%81%D1%8B_%D0%BF%D1%80%D0%BE%D1%81%D0%B2%D0%B5%D1%89%D0%B5%D0%BD%D0%B8%D0%B5.PNG

800 ms

nov-gl.jpg

nov-gl.jpg

673 ms

vebi-gl.jpg

vebi-gl.jpg

670 ms

dsd.jpg

dsd.jpg

709 ms

365.jpg

365.jpg

759 ms

konv.jpg

konv.jpg

759 ms

osh.jpg

osh.jpg

797 ms

www.jpg

www.jpg

800 ms

gimnastrada1.jpg

gimnastrada1.jpg

851 ms

%D0%BB%D0%BE%D0%B3%D0%BE%203.png

%D0%BB%D0%BE%D0%B3%D0%BE%203.png

900 ms

%D0%BB%D0%BE%D0%B3%D0%BE%203.png

%D0%BB%D0%BE%D0%B3%D0%BE%203.png

899 ms

Lab%20Mordkovich.jpg

Lab%20Mordkovich.jpg

929 ms

all.js

all.js

35 ms

zank2.jpg

zank2.jpg

924 ms

all.js

all.js

1040 ms

all.js

all.js

8 ms

hit

hit

541 ms

code.js

code.js

814 ms

top100.js

top100.js

694 ms

%D0%BB%D0%BE%D0%B3%D0%BE%203.png

%D0%BB%D0%BE%D0%B3%D0%BE%203.png

777 ms

js

js

49 ms

analytics.js

analytics.js

21 ms

isdp.jpg

isdp.jpg

819 ms

logo755x254.jpg

logo755x254.jpg

967 ms

bin-det.jpg

bin-det.jpg

840 ms

collect

collect

66 ms

up.gif

up.gif

834 ms

bx_stat

bx_stat

197 ms

31x31.gif

31x31.gif

785 ms

voiper.jpg

voiper.jpg

797 ms

1px.gif

1px.gif

823 ms

header_menu_bg.gif

header_menu_bg.gif

875 ms

header_menu_bg.gif

header_menu_bg.gif

861 ms

header_menu_bg_selected.gif

header_menu_bg_selected.gif

870 ms

zebra_bg.gif

zebra_bg.gif

829 ms

content_block_bg.gif

content_block_bg.gif

844 ms

content_block_bg.gif

content_block_bg.gif

871 ms

counter2

counter2

125 ms

sync-loader.js

sync-loader.js

851 ms

counter

counter

126 ms

dyn-goal-config.js

dyn-goal-config.js

129 ms

jquery.min.js

jquery.min.js

592 ms

suggest.js

suggest.js

138 ms

opensearch.js

opensearch.js

284 ms

Accessibility Review

lbz.ru accessibility score

64

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

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

lbz.ru best practices score

50

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

Displays images with incorrect aspect ratio

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

lbz.ru SEO score

62

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

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

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 Lbz.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 Lbz.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

lbz.ru

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