Tools & Wizards About Us
5klass.net screenshot

Report Summary

  • 47

    Performance

    Renders faster than
    65% of other websites

  • 71

    Accessibility

    Visual factors better than
    that of 36% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 67

    SEO

    Google-friendlier than
    26% of websites

5klass.net

Презентации для школьников

Page Load Speed

1.8 sec in total

First Response

45 ms

Resources Loaded

1.7 sec

Page Rendered

121 ms

5klass.net screenshot

About Website

Click here to check amazing 5 Klass content for Russia. Otherwise, check out these important facts you probably never knew about 5klass.net

Презентации для школьников, сгруппированные по урокам и классам

Visit 5klass.net

Key Findings

We analyzed 5klass.net page load time and found that the first response time was 45 ms and then it took 1.8 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.

Performance Metrics

5klass.net performance score

47

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.3 s

98/100

10%

LCP (Largest Contentful Paint)

Value9.3 s

1/100

25%

SI (Speed Index)

Value6.2 s

43/100

10%

TBT (Total Blocking Time)

Value630 ms

48/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value9.7 s

28/100

10%

Network Requests Diagram

5klass.net

45 ms

5klass.net

298 ms

div.css

280 ms

context.js

1044 ms

sc.js

241 ms

Our browser made a total of 9 requests to load all elements on the main page. We found that 67% of them (6 requests) were addressed to the original 5klass.net, 11% (1 request) were made to Yandex.ru and 11% (1 request) were made to Acint.net. The less responsive or slowest element that took the longest time to load (1 sec) relates to the external source Yandex.ru.

Page Optimization Overview & Recommendations

Page size can be reduced by 44.6 kB (25%)

Content Size

181.8 kB

After Optimization

137.2 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of 5klass.net main page is 181.8 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. Only 10% of websites need less resources to load. Javascripts take 93.4 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 28.7 kB

  • Original 35.1 kB
  • After minification 34.8 kB
  • After compression 6.4 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 28.7 kB or 82% of the original size.

Image Optimization

-30%

Potential reduce by 15.9 kB

  • Original 53.3 kB
  • After minification 37.3 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, 5 Klass needs image optimization as it can save up to 15.9 kB or 30% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-0%

Potential reduce by 0 B

  • Original 93.4 kB
  • After minification 93.4 kB
  • After compression 93.4 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. This website has mostly compressed JavaScripts.

Requests Breakdown

Number of requests can be reduced by 3 (43%)

Requests Now

7

After Optimization

4

  • Images
  • JavaScript
  • CSS

The browser has sent 7 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 5 Klass. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

5klass.net

5klass.net

45 ms

5klass.net

5klass.net

298 ms

div.css

div.css

280 ms

context.js

context.js

1044 ms

sc.js

sc.js

241 ms

mail5.png

mail5.png

226 ms

arrows.png

arrows.png

227 ms

aci.js

aci.js

531 ms

tag.js

tag.js

919 ms

Accessibility Review

5klass.net accessibility score

71

Accessibility Issues

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

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

Best Practices

5klass.net best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

5klass.net SEO score

67

Search Engine Optimization Advices

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

    N/A

  • Encoding

    WINDOWS-1251

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise 5klass.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 5klass.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

5klass.net

Open Graph description is not detected on the main page of 5 Klass. 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: