Report Summary

  • 46

    Performance

    Renders faster than
    65% of other websites

  • 39

    Accessibility

    Visual factors better than
    that of 18% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 69

    SEO

    Google-friendlier than
    28% of websites

Page Load Speed

4.3 sec in total

First Response

689 ms

Resources Loaded

3.3 sec

Page Rendered

266 ms

chemsystem.ru screenshot

About Website

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

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Key Findings

We analyzed Chemsystem.ru page load time and found that the first response time was 689 ms and then it took 3.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

chemsystem.ru performance score

46

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.0 s

83/100

10%

LCP (Largest Contentful Paint)

Value2.3 s

93/100

25%

SI (Speed Index)

Value6.0 s

47/100

10%

TBT (Total Blocking Time)

Value1,370 ms

16/100

30%

CLS (Cumulative Layout Shift)

Value0.389

26/100

15%

TTI (Time to Interactive)

Value12.9 s

13/100

10%

Network Requests Diagram

chemsystem.ru

689 ms

style.css

269 ms

jquery.js

410 ms

jscript.js

281 ms

jqueryslidemenu.js

282 ms

Our browser made a total of 71 requests to load all elements on the main page. We found that 72% of them (51 requests) were addressed to the original Chemsystem.ru, 8% (6 requests) were made to Static.cloudim.ru and 7% (5 requests) were made to Gismeteo.ru. The less responsive or slowest element that took the longest time to load (974 ms) belongs to the original domain Chemsystem.ru.

Page Optimization Overview & Recommendations

Page size can be reduced by 205.5 kB (42%)

Content Size

493.2 kB

After Optimization

287.7 kB

In fact, the total size of Chemsystem.ru main page is 493.2 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. 30% of websites need less resources to load. Images take 287.4 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 34.5 kB

  • Original 45.3 kB
  • After minification 40.9 kB
  • After compression 10.8 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 34.5 kB or 76% of the original size.

Image Optimization

-20%

Potential reduce by 57.2 kB

  • Original 287.4 kB
  • After minification 230.2 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, Chemsystem needs image optimization as it can save up to 57.2 kB or 20% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-68%

Potential reduce by 77.0 kB

  • Original 112.5 kB
  • After minification 99.9 kB
  • After compression 35.5 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 77.0 kB or 68% of the original size.

CSS Optimization

-77%

Potential reduce by 36.8 kB

  • Original 48.0 kB
  • After minification 42.5 kB
  • After compression 11.2 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. Chemsystem.ru needs all CSS files to be minified and compressed as it can save up to 36.8 kB or 77% of the original size.

Requests Breakdown

Number of requests can be reduced by 37 (57%)

Requests Now

65

After Optimization

28

The browser has sent 65 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Chemsystem. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

chemsystem.ru accessibility score

39

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

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

<input type="image"> elements do not have [alt] text

High

Form elements do not have associated labels

High

Links do not have a discernible name

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

chemsystem.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

Page has valid source maps

SEO Factors

chemsystem.ru SEO score

69

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

    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 Chemsystem.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 Chemsystem.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 Chemsystem. 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: