4 sec in total
872 ms
2.8 sec
341 ms
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.ruWe analyzed Lbz.ru page load time and found that the first response time was 872 ms and then it took 3.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.
lbz.ru performance score
name
value
score
weighting
Value8.0 s
0/100
10%
Value8.0 s
2/100
25%
Value12.7 s
3/100
10%
Value7,490 ms
0/100
30%
Value0.194
63/100
15%
Value16.7 s
5/100
10%
872 ms
570 ms
295 ms
431 ms
1016 ms
Our browser made a total of 70 requests to load all elements on the main page. We found that 67% of them (47 requests) were addressed to the original Lbz.ru, 4% (3 requests) were made to Site.yandex.net and 3% (2 requests) were made to Counter.rambler.ru. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Lbz.ru.
Page size can be reduced by 610.3 kB (63%)
961.1 kB
350.8 kB
In fact, the total size of Lbz.ru main page is 961.1 kB. 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. Javascripts take 640.8 kB which makes up the majority of the site volume.
Potential reduce by 73.7 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 73.7 kB or 80% of the original size.
Potential reduce by 14.4 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.
Potential reduce by 468.0 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 468.0 kB or 73% of the original size.
Potential reduce by 54.1 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 54.1 kB or 87% of the original size.
Number of requests can be reduced by 27 (42%)
65
38
The browser has sent 65 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 15 to 1 for JavaScripts and as a result speed up the page load time.
lbz.ru
872 ms
kernel_main.css
570 ms
page_a34098d3a6e2a7a6ff862efd9835babb.css
295 ms
template_af31da43756733752e4750d4c052b591.css
431 ms
kernel_main.js
1016 ms
rsasecurity.min.js
437 ms
template_22acece916fb841aad444bcbdf9ecd26.js
428 ms
jquery.js
904 ms
jquery.cookie.js
440 ms
openapi.js
373 ms
share.js
20 ms
orphus.js
432 ms
top100.jcn
410 ms
ba.js
192 ms
watch.js
31 ms
up.gif
487 ms
b06_rus.gif
423 ms
logo.png
416 ms
email.png
145 ms
eng.gif
146 ms
lupa.gif
147 ms
series.gif
148 ms
zip.gif
146 ms
vk.gif
276 ms
xls.gif
278 ms
ie.gif
277 ms
twitter.png
277 ms
livejournal.png
277 ms
vkontakte.png
412 ms
facebook.png
414 ms
youtube-g.png
414 ms
orphus.gif
414 ms
aiul.jpg
414 ms
0001.jpg
589 ms
0001.jpg
575 ms
0001.jpg
589 ms
0001.jpg
577 ms
image-0001.jpg
576 ms
image-0001.jpg
576 ms
keu.jpg
899 ms
uvup.jpg
849 ms
eumk.jpg
995 ms
konk.jpg
715 ms
4authors.jpg
868 ms
ev.jpg
725 ms
31x31.gif
853 ms
1px.gif
867 ms
voiper.jpg
1140 ms
all.js
83 ms
all.js
72 ms
header_menu_bg.jpg
976 ms
header_menu_bg.jpg
990 ms
zebra_bg.gif
990 ms
content_block_bg.gif
1013 ms
sec.png
1106 ms
hit
284 ms
top100.scn
151 ms
b-share-icon.png
46 ms
watch.js
3 ms
b-share-popup_down__tail.png
41 ms
143 ms
collapsed.gif
1007 ms
xd_arbiter.php
79 ms
xd_arbiter.php
93 ms
suggest.js
74 ms
opensearch.js
77 ms
bx_stat
237 ms
hit
129 ms
b06_rus.gif
618 ms
counter
320 ms
lbz.ru accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
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
Image elements do not have [alt] attributes
Form elements do not have associated labels
Links do not have a discernible name
lbz.ru best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Displays images with incorrect aspect ratio
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Page has valid source maps
lbz.ru SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
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
Image elements do not have [alt] attributes
N/A
RU
WINDOWS-1251
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. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else), while the claimed language is Russian. Our system also found out that Lbz.ru main page’s claimed encoding is windows-1251. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.
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: