Report Summary

  • 25

    Performance

    Renders faster than
    45% of other websites

  • 83

    Accessibility

    Visual factors better than
    that of 56% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

s-k-o.ru

Интернет магазин котельного оборудования и систем отопления

Page Load Speed

23.3 sec in total

First Response

679 ms

Resources Loaded

22.1 sec

Page Rendered

502 ms

s-k-o.ru screenshot

About Website

Welcome to s-k-o.ru homepage info - get ready to check S K O best content for Russia right away, or after learning these important things about s-k-o.ru

В Интернет-магазине СКО представлено котельное оборудование и различные системы отопления от известных брендов. Заказ онлайн или по телефону.

Visit s-k-o.ru

Key Findings

We analyzed S-k-o.ru page load time and found that the first response time was 679 ms and then it took 22.6 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. Unfortunately, there was 1 request timeout, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

s-k-o.ru performance score

25

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.9 s

25/100

10%

LCP (Largest Contentful Paint)

Value7.2 s

5/100

25%

SI (Speed Index)

Value6.8 s

35/100

10%

TBT (Total Blocking Time)

Value1,400 ms

16/100

30%

CLS (Cumulative Layout Shift)

Value0.169

70/100

15%

TTI (Time to Interactive)

Value10.0 s

26/100

10%

Network Requests Diagram

s-k-o.ru

679 ms

www.s-k-o.ru

812 ms

kernel_main.css

583 ms

page_f6702f7e753b6793361fc6a483c91be5.css

329 ms

template_197b1577c7976d4799b87bafdb82cadc.css

462 ms

Our browser made a total of 77 requests to load all elements on the main page. We found that 88% of them (68 requests) were addressed to the original S-k-o.ru, 4% (3 requests) were made to Mc.yandex.ru and 4% (3 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (19.7 sec) relates to the external source Mc.yandex.ru.

Page Optimization Overview & Recommendations

Page size can be reduced by 976.5 kB (61%)

Content Size

1.6 MB

After Optimization

614.2 kB

In fact, the total size of S-k-o.ru main page is 1.6 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. 30% of websites need less resources to load. Javascripts take 756.9 kB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 189.3 kB

  • Original 220.2 kB
  • After minification 198.0 kB
  • After compression 30.9 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 189.3 kB or 86% of the original size.

Image Optimization

-22%

Potential reduce by 113.5 kB

  • Original 513.0 kB
  • After minification 399.5 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, S K O needs image optimization as it can save up to 113.5 kB or 22% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-78%

Potential reduce by 587.1 kB

  • Original 756.9 kB
  • After minification 605.9 kB
  • After compression 169.8 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 587.1 kB or 78% of the original size.

CSS Optimization

-86%

Potential reduce by 86.6 kB

  • Original 100.6 kB
  • After minification 79.9 kB
  • After compression 13.9 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. S-k-o.ru needs all CSS files to be minified and compressed as it can save up to 86.6 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 32 (45%)

Requests Now

71

After Optimization

39

The browser has sent 71 CSS, Javascripts, AJAX and image requests in order to completely render the main page of S K O. 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 from 6 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

s-k-o.ru accessibility score

83

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

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

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

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

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

Best Practices

s-k-o.ru best practices score

58

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

s-k-o.ru SEO score

83

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

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

High

Image elements do not have [alt] attributes

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

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    RU

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise S-k-o.ru 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 S-k-o.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.

Social Sharing Optimization

Open Graph description is not detected on the main page of S K O. 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: