Tools & Wizards About Us
ventilab.ru screenshot

Report Summary

  • 97

    Performance

    Renders faster than
    94% of other websites

  • 59

    Accessibility

    Visual factors better than
    that of 26% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 67

    SEO

    Google-friendlier than
    26% of websites

ventilab.ru

Вентиляционная лаборатория: пусконаладка, наладка, контроль систем вентиляции.

Page Load Speed

1.7 sec in total

First Response

479 ms

Resources Loaded

1 sec

Page Rendered

210 ms

ventilab.ru screenshot

About Website

Visit ventilab.ru now to see the best up-to-date Ventilab content for Russia and also check out these interesting facts you probably never knew about ventilab.ru

Вентиляционная лаборатория: краткий перечень услуг - пусконаладка, наладка, паспортизация систем вентиляции.

Visit ventilab.ru

Key Findings

We analyzed Ventilab.ru page load time and found that the first response time was 479 ms and then it took 1.2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 25% of websites can load faster.

Performance Metrics

ventilab.ru performance score

97

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.2 s

99/100

10%

LCP (Largest Contentful Paint)

Value1.8 s

99/100

25%

SI (Speed Index)

Value1.5 s

100/100

10%

TBT (Total Blocking Time)

Value190 ms

90/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value2.0 s

99/100

10%

Network Requests Diagram

ventilab.ru

479 ms

ventlab.css

154 ms

watch.js

2 ms

mainlogo.png

407 ms

vk_ru40.png

423 ms

Our browser made a total of 11 requests to load all elements on the main page. We found that 73% of them (8 requests) were addressed to the original Ventilab.ru, 18% (2 requests) were made to Google-analytics.com and 9% (1 request) were made to Mc.yandex.ru. The less responsive or slowest element that took the longest time to load (541 ms) belongs to the original domain Ventilab.ru.

Page Optimization Overview & Recommendations

Page size can be reduced by 53.2 kB (25%)

Content Size

212.7 kB

After Optimization

159.5 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Ventilab.ru main page is 212.7 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. 15% of websites need less resources to load. Images take 173.6 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 16.6 kB

  • Original 21.7 kB
  • After minification 18.1 kB
  • After compression 5.1 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 3.6 kB, which is 17% 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 16.6 kB or 76% of the original size.

Image Optimization

-21%

Potential reduce by 36.5 kB

  • Original 173.6 kB
  • After minification 137.1 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, Ventilab needs image optimization as it can save up to 36.5 kB or 21% 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 34 B

  • Original 17.2 kB
  • After minification 17.2 kB
  • After compression 17.1 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

-22%

Potential reduce by 48 B

  • Original 221 B
  • After minification 221 B
  • After compression 173 B

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. Ventilab.ru needs all CSS files to be minified and compressed as it can save up to 48 B or 22% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

9

After Optimization

9

  • Images
  • JavaScript
  • CSS

The browser has sent 9 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ventilab. According to our analytics all requests are already optimized.

Network Requests Diagram

ventilab.ru

ventilab.ru

479 ms

ventlab.css

ventlab.css

154 ms

watch.js

watch.js

2 ms

mainlogo.png

mainlogo.png

407 ms

vk_ru40.png

vk_ru40.png

423 ms

linkerSmall.png

linkerSmall.png

408 ms

160a.png

160a.png

541 ms

pitot.png

pitot.png

411 ms

qrMalemeln.gif

qrMalemeln.gif

309 ms

ga.js

ga.js

10 ms

__utm.gif

__utm.gif

13 ms

Accessibility Review

ventilab.ru accessibility score

59

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

ventilab.ru best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

SEO Factors

ventilab.ru 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 Ventilab.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 Ventilab.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

ventilab.ru

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