Report Summary

  • 16

    Performance

    Renders faster than
    30% of other websites

  • 64

    Accessibility

    Visual factors better than
    that of 30% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 64

    SEO

    Google-friendlier than
    24% of websites

dvsr.ru

ДВС Ресурс - проектируем и производим газопоршневые электростанции и мини-ТЭЦ.

Page Load Speed

23.5 sec in total

First Response

8 sec

Resources Loaded

15.2 sec

Page Rendered

335 ms

dvsr.ru screenshot

About Website

Welcome to dvsr.ru homepage info - get ready to check Dvsr best content for Russia right away, or after learning these important things about dvsr.ru

ДВС Ресурс изготавливает на собственном заводе газопоршневые электростанции и мини-ТЭЦ в различных комплектациях на базе двигателей: mtu, MAN, Jenbacher и др. ☎ +7(812) 409-36-45

Visit dvsr.ru

Key Findings

We analyzed Dvsr.ru page load time and found that the first response time was 8 sec and then it took 15.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

dvsr.ru performance score

16

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.2 s

8/100

10%

LCP (Largest Contentful Paint)

Value10.9 s

0/100

25%

SI (Speed Index)

Value16.3 s

0/100

10%

TBT (Total Blocking Time)

Value16,270 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.048

99/100

15%

TTI (Time to Interactive)

Value25.7 s

0/100

10%

Network Requests Diagram

dvsr.ru

7961 ms

system.base.css

168 ms

system.menus.css

334 ms

system.messages.css

332 ms

system.theme.css

335 ms

Our browser made a total of 83 requests to load all elements on the main page. We found that all of those requests were addressed to Dvsr.ru and no external sources were called. The less responsive or slowest element that took the longest time to load (8 sec) belongs to the original domain Dvsr.ru.

Page Optimization Overview & Recommendations

Page size can be reduced by 276.8 kB (21%)

Content Size

1.3 MB

After Optimization

1.0 MB

In fact, the total size of Dvsr.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. 25% of websites need less resources to load. Images take 991.3 kB which makes up the majority of the site volume.

HTML Optimization

-73%

Potential reduce by 16.4 kB

  • Original 22.5 kB
  • After minification 21.3 kB
  • After compression 6.1 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. 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 16.4 kB or 73% of the original size.

Image Optimization

-5%

Potential reduce by 53.7 kB

  • Original 991.3 kB
  • After minification 937.6 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. Dvsr images are well optimized though.

JavaScript Optimization

-71%

Potential reduce by 142.0 kB

  • Original 199.8 kB
  • After minification 159.7 kB
  • After compression 57.8 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 142.0 kB or 71% of the original size.

CSS Optimization

-80%

Potential reduce by 64.7 kB

  • Original 80.4 kB
  • After minification 63.6 kB
  • After compression 15.7 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. Dvsr.ru needs all CSS files to be minified and compressed as it can save up to 64.7 kB or 80% of the original size.

Requests Breakdown

Number of requests can be reduced by 35 (44%)

Requests Now

80

After Optimization

45

The browser has sent 80 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Dvsr. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and from 17 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

dvsr.ru accessibility score

64

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.

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

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

dvsr.ru best practices score

67

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

SEO Factors

dvsr.ru SEO score

64

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

    RU

  • Language Claimed

    RU

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Dvsr.ru can be misinterpreted by Google and other search engines. Our service has detected that Russian is used on the page, and it matches the claimed language. Our system also found out that Dvsr.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 Dvsr. 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: