Tools & Wizards About Us

Report Summary

  • 40

    Performance

    Renders faster than
    59% of other websites

  • 84

    Accessibility

    Visual factors better than
    that of 56% of websites

  • 50

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

chem-service.com

Химреактивы, химические реактивы купить в Москве, магазин хим реактивов - продажа химических реагентов | ЗАО Химсервис

Page Load Speed

4 sec in total

First Response

380 ms

Resources Loaded

3.5 sec

Page Rendered

210 ms

About Website

Welcome to chem-service.com homepage info - get ready to check Chem Service best content for Russia right away, or after learning these important things about chem-service.com

ЗАО Химсервис - магазин хим реактивов, реализует химреактивы, химические реагенты, реактивы. Продажа химреактивов, цены, купить химреактивы в интернет-магазине.

Visit chem-service.com

Key Findings

We analyzed Chem-service.com page load time and found that the first response time was 380 ms and then it took 3.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

chem-service.com performance score

40

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.6 s

5/100

10%

LCP (Largest Contentful Paint)

Value10.8 s

0/100

25%

SI (Speed Index)

Value9.1 s

13/100

10%

TBT (Total Blocking Time)

Value420 ms

65/100

30%

CLS (Cumulative Layout Shift)

Value0.024

100/100

15%

TTI (Time to Interactive)

Value8.5 s

38/100

10%

Network Requests Diagram

chem-service.com

380 ms

chem-service.com

774 ms

kernel_main.css

127 ms

kernel_socialservices.css

250 ms

template_1b7a2def2c48781eff6f0ef6ccebbfb9_d62db78a62aee57a8d278d7bd5e2123f.css

359 ms

Our browser made a total of 62 requests to load all elements on the main page. We found that 90% of them (56 requests) were addressed to the original Chem-service.com, 3% (2 requests) were made to Counter.yadro.ru and 2% (1 request) were made to Ajax.googleapis.com. The less responsive or slowest element that took the longest time to load (1.7 sec) belongs to the original domain Chem-service.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 834.5 kB (47%)

Content Size

1.8 MB

After Optimization

930.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Chem-service.com main page is 1.8 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. 35% of websites need less resources to load. Images take 1.6 MB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 32.7 kB

  • Original 43.3 kB
  • After minification 38.7 kB
  • After compression 10.6 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 4.6 kB, which is 11% 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 32.7 kB or 75% of the original size.

Image Optimization

-49%

Potential reduce by 784.8 kB

  • Original 1.6 MB
  • After minification 828.3 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, Chem Service needs image optimization as it can save up to 784.8 kB or 49% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-14%

Potential reduce by 13.0 kB

  • Original 91.6 kB
  • After minification 91.6 kB
  • After compression 78.6 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 13.0 kB or 14% of the original size.

CSS Optimization

-23%

Potential reduce by 4.0 kB

  • Original 17.3 kB
  • After minification 17.3 kB
  • After compression 13.3 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. Chem-service.com needs all CSS files to be minified and compressed as it can save up to 4.0 kB or 23% of the original size.

Requests Breakdown

Number of requests can be reduced by 7 (13%)

Requests Now

54

After Optimization

47

  • Images
  • JavaScript
  • CSS

The browser has sent 54 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Chem Service. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

chem-service.com accessibility score

84

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

Links do not have a discernible name

Best Practices

chem-service.com best practices score

50

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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

chem-service.com SEO score

77

Search Engine Optimization Advices

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 Chem-service.com 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 Chem-service.com 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 Chem Service. 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: