Access videouroki.net. Видеоуроки в интернет

name

value

score

weighting

FCP (First Contentful Paint)

Value1.9 s

86/100

10%

LCP (Largest Contentful Paint)

Value3.7 s

59/100

25%

SI (Speed Index)

Value3.9 s

82/100

10%

TBT (Total Blocking Time)

Value400 ms

67/100

30%

CLS (Cumulative Layout Shift)

Value0.016

100/100

15%

TTI (Time to Interactive)

Value10.0 s

26/100

10%

videouroki.net

892 ms

style.css

323 ms

ckeditor.js

785 ms

comm.js

380 ms

jquery-1.7.min.js

500 ms

Our browser made a total of 84 requests to load all elements on the main page. We found that 68% of them (57 requests) were addressed to the original Videouroki.net, 5% (4 requests) were made to Google.com and 5% (4 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (989 ms) relates to the external source Apis.google.com.

Content Size

1.2 MB

After Optimization

701.8 kB

In fact, the total size of Videouroki.net 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. 50% of websites need less resources to load. Javascripts take 569.5 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 71.1 kB

Original 85.9 kB
After minification 67.9 kB
After compression 14.7 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. This page needs HTML code to be minified as it can gain 17.9 kB, which is 21% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 71.1 kB or 83% of the original size.

Image Optimization

-12%

Potential reduce by 63.2 kB

Original 544.8 kB
After minification 481.6 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. Obviously, Videouroki needs image optimization as it can save up to 63.2 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-65%

Potential reduce by 368.8 kB

Original 569.5 kB
After minification 565.8 kB
After compression 200.7 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 368.8 kB or 65% of the original size.

CSS Optimization

-83%

Potential reduce by 23.1 kB

Original 27.8 kB
After minification 22.5 kB
After compression 4.7 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. Videouroki.net needs all CSS files to be minified and compressed as it can save up to 23.1 kB or 83% of the original size.

Requests Now

After Optimization

The browser has sent 76 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Videouroki. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Issues

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.

High

Buttons do not have an accessible name

High

Links do not have a discernible name

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

These items highlight common accessibility best practices.

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

High

Serves images with low resolution

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

Search Engine Optimization Advices

To appear in search results, crawlers need access to your app.

High

Links are not crawlable

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/).

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

Language Detected

RU
Language Claimed

N/A
Encoding

WINDOWS-1251

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Videouroki.net can be misinterpreted by Google and other search engines. Our service has detected that Russian is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Videouroki.net 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.

Social Sharing Optimization

videouroki.net

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

Report Summary

Performance

Accessibility

Best Practices

SEO

Видеоуроки в интернет - сайт для учителей

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

videouroki.net

style.css

ckeditor.js

comm.js

jquery-1.7.min.js

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

videouroki.net

style.css

ckeditor.js

comm.js

jquery-1.7.min.js

jquery.fancybox-1.3.4.pack.js

jquery.fancybox-1.3.4.css

JsHttpRequest.js

brand

brand

tab.js

plusone.js

bc_bg.png

tlmini.jpg

listovka_t_mini.jpg

grey_light_rus.gif

bc_separator.png

home.png

bg_header.png

header.png

polka.png

119.png

arrow.jpg

fmban180x180.gif

kvu180x270.gif

ud_banner5_180%20%281%29.png

apr2016728.jpg

bestforteacherstop.jpg

97.jpg

96.png

95.png

427.png

426.png

425.png

424.png

423.png

422.png

421.png

420.png

419.png

418.png

98733910.jpg

98733909.jpg