4.1 sec in total
317 ms
3.2 sec
666 ms
Click here to check amazing Berdov content for Russia. Otherwise, check out these important facts you probably never knew about berdov.com
Большая коллекция видео, учебных материалов и задач для самостоятельного решения
Visit berdov.comWe analyzed Berdov.com page load time and found that the first response time was 317 ms and then it took 3.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.
berdov.com performance score
name
value
score
weighting
Value3.1 s
45/100
10%
Value3.1 s
74/100
25%
Value4.7 s
69/100
10%
Value1,230 ms
20/100
30%
Value0
100/100
15%
Value4.6 s
81/100
10%
317 ms
416 ms
226 ms
12 ms
246 ms
Our browser made a total of 64 requests to load all elements on the main page. We found that 27% of them (17 requests) were addressed to the original Berdov.com, 20% (13 requests) were made to Vk.com and 6% (4 requests) were made to Mc.yandex.ru. The less responsive or slowest element that took the longest time to load (1.1 sec) relates to the external source Cs10899.vk.me.
Page size can be reduced by 754.4 kB (60%)
1.3 MB
496.3 kB
In fact, the total size of Berdov.com main page is 1.3 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. Javascripts take 725.9 kB which makes up the majority of the site volume.
Potential reduce by 21.0 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 21.0 kB or 69% of the original size.
Potential reduce by 4.8 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. Berdov images are well optimized though.
Potential reduce by 482.2 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 482.2 kB or 66% of the original size.
Potential reduce by 246.4 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. Berdov.com needs all CSS files to be minified and compressed as it can save up to 246.4 kB or 82% of the original size.
Number of requests can be reduced by 30 (52%)
58
28
The browser has sent 58 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Berdov. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 21 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.
berdov.com
317 ms
www.berdov.com
416 ms
style.css
226 ms
jquery.min.js
12 ms
countdown.js
246 ms
openapi.js
372 ms
MathJax.js
464 ms
openapi.js
545 ms
watch.js
181 ms
watch.js
608 ms
ga.js
35 ms
logo.png
142 ms
repetitor-po-matematike-zanyatie.jpg
393 ms
repetitor-po-matematike-moskva.jpg
343 ms
2-medium.png
342 ms
3-hard.png
340 ms
1-light.png
341 ms
repetitor-po-matematike-pavel-berdov-foto4.jpg
407 ms
config.js
364 ms
config.js
364 ms
tex2jax.js
363 ms
__utm.gif
17 ms
AkH_WZcgzYU
66 ms
upload.gif
260 ms
widget_community.php
319 ms
www-embed-player-vflfNyN_r.css
25 ms
www-embed-player.js
49 ms
base.js
78 ms
Tqng9ngJVK4Gqvh3e602hP-HqlN49KFEUSDtmrOPmWo.js
81 ms
ad_status.js
91 ms
advert.gif
168 ms
zN7GBFwfMP4uA6AR0HCoLQ.ttf
66 ms
RxZJdnzeo3R5zSexge8UUaCWcynf_cDxXwCLxiixG1c.ttf
65 ms
hit
296 ms
header.php
127 ms
loader_nav19188_3.js
132 ms
lite.css
244 ms
lite.js
405 ms
lang3_0.js
254 ms
widget_community.css
254 ms
xdm.js
262 ms
al_community.js
363 ms
1
167 ms
hit
131 ms
eSqRqaUGr9Y.jpg
378 ms
3s-vGHv0nms.jpg
374 ms
e_b8790c3a.jpg
361 ms
ctgSXPVo9fA.jpg
368 ms
e_fb90da9c.jpg
376 ms
FKjEeU9cXZE.jpg
368 ms
L33CCjecyRM.jpg
368 ms
3pZIbY3km7U.jpg
373 ms
dp-kayOCPAo.jpg
384 ms
e_4ef1a24e.jpg
364 ms
vr8HHKxGtEI.jpg
372 ms
4g3pKhOfV_o.jpg
377 ms
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362 ms
e_db8dd33d.jpg
1121 ms
dooQfmXQmvc.jpg
379 ms
RScnPp2Fl6k.jpg
367 ms
Qr92mvmlQJQ.jpg
372 ms
camera_50.png
124 ms
w_logo.png
123 ms
MathMenu.js
228 ms
berdov.com accessibility score
berdov.com 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
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
berdov.com SEO score
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
Document uses legible font sizes
RU
RU
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Berdov.com 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 Berdov.com 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.
berdov.com
Open Graph description is not detected on the main page of Berdov. 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: