22.5 sec in total
549 ms
21.3 sec
628 ms
Click here to check amazing Courson content for Russia. Otherwise, check out these important facts you probably never knew about courson.ru
Первая в России онлайн-площадка, объединившая практичные знания из всех областей. Платформа для онлайн-обучения и личностного развития, видеокурсы, кейсы и истории успеха от экспертов и практиков бизн...
Visit courson.ruWe analyzed Courson.ru page load time and found that the first response time was 549 ms and then it took 21.9 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster.
courson.ru performance score
name
value
score
weighting
Value4.5 s
15/100
10%
Value14.2 s
0/100
25%
Value21.9 s
0/100
10%
Value15,380 ms
0/100
30%
Value0.178
68/100
15%
Value37.3 s
0/100
10%
549 ms
2499 ms
655 ms
331 ms
332 ms
Our browser made a total of 122 requests to load all elements on the main page. We found that 77% of them (94 requests) were addressed to the original Courson.ru, 3% (4 requests) were made to Fonts.gstatic.com and 3% (4 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (8.4 sec) belongs to the original domain Courson.ru.
Page size can be reduced by 1.4 MB (45%)
3.1 MB
1.7 MB
In fact, the total size of Courson.ru main page is 3.1 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. 60% of websites need less resources to load. Images take 1.4 MB which makes up the majority of the site volume.
Potential reduce by 164.5 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 164.5 kB or 85% of the original size.
Potential reduce by 64.0 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. Courson images are well optimized though.
Potential reduce by 771.4 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 771.4 kB or 72% of the original size.
Potential reduce by 389.5 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. Courson.ru needs all CSS files to be minified and compressed as it can save up to 389.5 kB or 86% of the original size.
Number of requests can be reduced by 72 (68%)
106
34
The browser has sent 106 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Courson. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 62 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.
courson.ru
549 ms
www.courson.ru
2499 ms
main-page.css
655 ms
jquery.bxslider.css
331 ms
jquery-ui-timepicker-addon.min.css
332 ms
css
172 ms
script.js
304 ms
modernizr-2.6.2.min.js
404 ms
jquery.js
988 ms
jquery-migrate-1.2.1.js
641 ms
jquery-ui.min.js
3621 ms
jquery.form.min.js
896 ms
jquery.ui.touch-punch.min.js
894 ms
jquery.json.min.js
1123 ms
jquery.cookie.js
1120 ms
jquery.validate.min.js
1220 ms
jquery.validate.my-additional-methods.js
1259 ms
jquery.iframe-transport.js
1407 ms
jquery.fileupload.js
1778 ms
load-image.all.min.js
1585 ms
jquery.fileupload-process.js
1562 ms
jquery.fileupload-image.js
1679 ms
jquery.fileupload-audio.js
1839 ms
jquery.fileupload-video.js
1852 ms
jquery.fileupload-validate.js
1967 ms
jquery.scrollTo.min.js
1969 ms
jquery.mCustomScrollbar.concat.min.js
3806 ms
jquery.raty.js
2296 ms
regional-ru.js
2287 ms
jquery-ui-timepicker-addon.min.js
2481 ms
jquery.bxslider.min.js
3111 ms
jquery.mask.min.js
2591 ms
jquery.ba-throttle-debounce.min.js
2626 ms
regional-ru.js
2846 ms
messages_ru.js
2867 ms
ZeroClipboard.min.js
3913 ms
skrollr.min.js
4263 ms
can.custom.js
4392 ms
in.js
135 ms
bootstrap.min.js
4121 ms
select2.min.js
5212 ms
date.js
4177 ms
chart.min.js
8128 ms
rangeslider.min.js
4427 ms
framework.js
4598 ms
-pre-init.js
4502 ms
application.js
4838 ms
logo.png
248 ms
header.jpg
4223 ms
1.jpg
4053 ms
2.jpg
1519 ms
3.jpg
3608 ms
4.jpg
3962 ms
5.jpg
2550 ms
55ce084664f844.64580034_330x201.jpg
3605 ms
55cbb7b56d8b11.80195916_330x201.jpg
2980 ms
55ce36edc74852.98940429_330x201.jpg
3609 ms
55cbb7b5086d46.42994419_330x201.jpg
3973 ms
55cbb7c0c135e3.71568878_40x40.jpeg
3897 ms
55cbb7b53df627.56760208_330x201.jpg
4089 ms
55cbb7d3845ef2.23418231_40x40.jpeg
4199 ms
55d30c94c0de44.20596173_330x201.jpeg
4563 ms
55cbb7d5a00412.17819778_40x40.jpeg
4275 ms
55d30e06299c48.33654913_330x201.jpg
5192 ms
55cbb8257e0c61.19119419_40x40.png
4450 ms
55d30f4d604528.23856864_330x201.jpg
4674 ms
55cbb826819324.10505220_0,123,3326,3326_40x40.jpeg
4677 ms
55cbb7b685db48.87837740_330x201.jpg
4933 ms
55cbb7f7585325.58242050_0,0,4912,4912_40x40.jpeg
5471 ms
55cbb7b6b3e3e0.20884030_330x201.jpg
5102 ms
55cbb7ef7fbdc5.02024612_40x40.jpeg
5257 ms
55cbb7b7e1f6a8.29792502_330x201.jpg
6153 ms
55cbb7d698cc74.11603633_40x40.jpeg
5475 ms
55cbb7b82aa596.68263467_330x201.jpg
5836 ms
55cbb8884a5d91.46286037_0,34,2466,2466_40x40.jpeg
5853 ms
55cbb7b85ad8d1.75653561_330x201.jpg
6023 ms
55cbb891551007.21643531_0,643,2574,2574_40x40.jpeg
6041 ms
gtm.js
364 ms
watch.js
73 ms
analytics.js
303 ms
atrk.js
334 ms
userspace
360 ms
sdk.js
1239 ms
client:plusone.js
353 ms
social-logos.png
5846 ms
RjgO7rYTmqiVp7vzi-Q5UaCWcynf_cDxXwCLxiixG1c.ttf
313 ms
open-sans-regular.woff
6442 ms
DXI1ORHCpsQm3Vp6mXoaTfOEPOIfcPv-fZ-WyMUtx48.ttf
813 ms
open-sans-light.woff
8401 ms
MTP_ySUJH_bn48VBG8sNSvOEPOIfcPv-fZ-WyMUtx48.ttf
695 ms
open-sans-semi-bold.woff
6644 ms
k3k702ZOKiLJc3WVjuplzPOEPOIfcPv-fZ-WyMUtx48.ttf
694 ms
open-sans-bold.woff
6758 ms
Courson_icons.ttf
7471 ms
rouble.woff
7247 ms
rtrg
1932 ms
collect
77 ms
atrk.gif
490 ms
ec.js
119 ms
framework
322 ms
cb=gapi.loaded_0
942 ms
collect
693 ms
collect
202 ms
collect
680 ms
317 ms
xd_arbiter.php
290 ms
postmessageRelay
187 ms
modal.js
5479 ms
1077434459-postmessagerelay.js
73 ms
rpc:shindig_random.js
51 ms
cb=gapi.loaded_0
45 ms
observer.js
4822 ms
socket.js
193 ms
main.js
387 ms
navbar-triggers.js
386 ms
metrics.js
860 ms
notifications.js
2024 ms
caps-watcher.js
1585 ms
chosen-arraw-down.png
1024 ms
bx_loader.gif
1198 ms
tooltip.js
1401 ms
400 ms
courson.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
<frame> or <iframe> elements do not have a title
Links do not have a discernible name
courson.ru best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Missing source maps for large first-party JavaScript
courson.ru SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
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
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 Courson.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 Courson.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.
courson.ru
Open Graph description is not detected on the main page of Courson. 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: