Tools & Wizards About Us

Report Summary

  • 9

    Performance

    Renders faster than
    23% of other websites

  • 58

    Accessibility

    Visual factors better than
    that of 25% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 62

    SEO

    Google-friendlier than
    23% of websites

viessmannstore.ru

ViessmannStore | ???? ??????, ?????? ????? viessmann (????? ??????), ????? ????????? viessmann, ????,

Page Load Speed

5.3 sec in total

First Response

556 ms

Resources Loaded

4.5 sec

Page Rendered

226 ms

About Website

Click here to check amazing Viessmann Store content for Russia. Otherwise, check out these important facts you probably never knew about viessmannstore.ru

??????? ????? ???????????? ??? ????????? ? ????????????? VIESSMANN.Vitopend, vitocell, vitoplex, vitodens

Visit viessmannstore.ru

Key Findings

We analyzed Viessmannstore.ru page load time and found that the first response time was 556 ms and then it took 4.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

viessmannstore.ru performance score

9

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.9 s

10/100

10%

LCP (Largest Contentful Paint)

Value8.9 s

1/100

25%

SI (Speed Index)

Value10.6 s

7/100

10%

TBT (Total Blocking Time)

Value1,400 ms

16/100

30%

CLS (Cumulative Layout Shift)

Value0.624

10/100

15%

TTI (Time to Interactive)

Value17.0 s

4/100

10%

Network Requests Diagram

viessmannstore.ru

556 ms

viessmannstore.ru

1268 ms

css-reset.css

137 ms

fonts.css

272 ms

styles.css

412 ms

Our browser made a total of 90 requests to load all elements on the main page. We found that 84% of them (76 requests) were addressed to the original Viessmannstore.ru, 2% (2 requests) were made to Widget.mango-office.ru and 2% (2 requests) were made to Bitrix.info. The less responsive or slowest element that took the longest time to load (1.3 sec) belongs to the original domain Viessmannstore.ru.

Page Optimization Overview & Recommendations

Page size can be reduced by 122.6 kB (9%)

Content Size

1.3 MB

After Optimization

1.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Viessmannstore.ru 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. 55% of websites need less resources to load. Images take 822.8 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 50.8 kB

  • Original 63.3 kB
  • After minification 53.6 kB
  • After compression 12.4 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. This page needs HTML code to be minified as it can gain 9.7 kB, which is 15% 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 50.8 kB or 80% of the original size.

Image Optimization

-5%

Potential reduce by 42.1 kB

  • Original 822.8 kB
  • After minification 780.7 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. Viessmann Store images are well optimized though.

JavaScript Optimization

-7%

Potential reduce by 26.0 kB

  • Original 398.0 kB
  • After minification 398.0 kB
  • After compression 372.0 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.

CSS Optimization

-12%

Potential reduce by 3.6 kB

  • Original 30.9 kB
  • After minification 30.9 kB
  • After compression 27.3 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. Viessmannstore.ru needs all CSS files to be minified and compressed as it can save up to 3.6 kB or 12% of the original size.

Requests Breakdown

Number of requests can be reduced by 40 (48%)

Requests Now

83

After Optimization

43

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 83 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Viessmann Store. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 28 to 1 for JavaScripts and from 14 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

viessmannstore.ru accessibility score

58

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

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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

Best Practices

viessmannstore.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

High

Missing source maps for large first-party JavaScript

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

viessmannstore.ru SEO score

62

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

Language and Encoding

  • Language Detected

    N/A

  • Language Claimed

    N/A

  • Encoding

    WINDOWS-1251

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Viessmannstore.ru can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else) and no language is claimed in <html> or <meta> tags either. Our system also found out that Viessmannstore.ru 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

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