Access viessmann-rus.ru. Котлы viessmann - надежные газовые котлы viessmann и другое климатическое оборудование

name

value

score

weighting

FCP (First Contentful Paint)

Value3.3 s

41/100

10%

LCP (Largest Contentful Paint)

Value6.3 s

10/100

25%

SI (Speed Index)

Value5.2 s

60/100

10%

TBT (Total Blocking Time)

Value180 ms

92/100

30%

CLS (Cumulative Layout Shift)

Value0.522

15/100

15%

TTI (Time to Interactive)

Value5.8 s

67/100

10%

viessmann-rus.ru

527 ms

viessmann-rus.ru

752 ms

bootstrap335.min.css

128 ms

font-awesome.min.css

248 ms

bootstrap-theme.css

357 ms

Our browser made a total of 91 requests to load all elements on the main page. We found that 93% of them (85 requests) were addressed to the original Viessmann-rus.ru, 2% (2 requests) were made to Fonts.gstatic.com and 1% (1 request) were made to Neocomms.ru. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Viessmann-rus.ru.

Content Size

1.4 MB

After Optimization

1.3 MB

In fact, the total size of Viessmann-rus.ru main page is 1.4 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 1.2 MB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 33.8 kB

Original 41.5 kB
After minification 39.8 kB
After compression 7.7 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. 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 33.8 kB or 81% of the original size.

Image Optimization

-7%

Potential reduce by 78.7 kB

Original 1.2 MB
After minification 1.1 MB

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 Rus images are well optimized though.

JavaScript Optimization

-3%

Potential reduce by 5.2 kB

Original 155.2 kB
After minification 155.2 kB
After compression 150.0 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

-4%

Potential reduce by 1.9 kB

Original 45.6 kB
After minification 45.5 kB
After compression 43.6 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. Viessmann-rus.ru has all CSS files already compressed.

Requests Now

After Optimization

The browser has sent 85 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Viessmann Rus. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 24 to 1 for JavaScripts and from 14 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

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

These are opportunities to improve keyboard navigation in your application.

High

Heading elements are not in a sequentially-descending order

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

Links do not have a discernible name

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

Page has valid source maps

Search Engine Optimization Advices

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

Language and Encoding

Language Detected

RU
Language Claimed

EN
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Viessmann-rus.ru can be misinterpreted by Google and other search engines. Our service has detected that Russian is used on the page, and it does not match the claimed English language. Our system also found out that Viessmann-rus.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

viessmann-rus.ru

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

Котлы viessmann - надежные газовые котлы viessmann и другое климатическое оборудование

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

viessmann-rus.ru

viessmann-rus.ru

bootstrap335.min.css

font-awesome.min.css

bootstrap-theme.css

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

viessmann-rus.ru

viessmann-rus.ru

bootstrap335.min.css

font-awesome.min.css

bootstrap-theme.css

boot-custom.css

toastr.min.css

owl.carousel.css

jquery.bootstrap-touchspin.css

jquery.fancybox.css

bootstrap_wizart.css

green.css

sweetalert.min.css

bootstrap-select.min.css

custom.css

jquery.core.min.js

bootstrap.min.js

bootstrap-hover-dropdown.min.js

jquery.scrollTo.min.js

owl.carousel.min.js

toastr.min.js

jquery.bootstrap-touchspin.min.js

jquery.blockUI.min.js

jquery.mousewheel-3.0.6.pack.js

jquery.fancybox.pack.js

jquery.maskedinput.min.js

icheck.min.js

bootstrap-select.min.js

defaults-ru_RU.min.js

jquery.validate.min.js

additional-methods.min.js

messages_ru.js

jquery.form.min.js

sweetalert.min.js

jquery.bootstrap.wizard.min.js

menuautoscaling.js

fe_basket.min.js

callback.js

custom.js

css

viessmannrus_bg_body0.jpg

viessmannrus_logo.gif

viessmann_indexslide_pic3.png