Report Summary

  • 27

    Performance

    Renders faster than
    47% of other websites

  • 71

    Accessibility

    Visual factors better than
    that of 37% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 90

    SEO

    Google-friendlier than
    68% of websites

drweb.cn

Dr.Web 下载性能卓越的反病毒软件保护电脑/苹果机/安卓设备

Page Load Speed

3.2 sec in total

First Response

454 ms

Resources Loaded

2.5 sec

Page Rendered

210 ms

drweb.cn screenshot

About Website

Visit drweb.cn now to see the best up-to-date Dr Web content for China and also check out these interesting facts you probably never knew about drweb.cn

Doctor Web公司是世界著名的反病毒产品和解决方案提供商,拥有超强功能的反病毒引擎。 公司总部在莫斯科,研发中心设在圣彼得堡,拥有自己的反病毒实验室和病毒监控服务,员工总数超过300人,研发人员近200人。 我们的客户遍布世界各地,从政府、军队、大型企业到家庭用户,乃至个人移动终端,无不是我们的忠实用户。 我们的战略目标是提供最高级别的信息安全保护,提供一个坚不可摧的屏障,使用户可以从...

Visit drweb.cn

Key Findings

We analyzed Drweb.cn page load time and found that the first response time was 454 ms and then it took 2.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

drweb.cn performance score

27

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.6 s

2/100

10%

LCP (Largest Contentful Paint)

Value7.1 s

5/100

25%

SI (Speed Index)

Value9.8 s

10/100

10%

TBT (Total Blocking Time)

Value980 ms

28/100

30%

CLS (Cumulative Layout Shift)

Value0.009

100/100

15%

TTI (Time to Interactive)

Value12.1 s

16/100

10%

Network Requests Diagram

drweb.cn

454 ms

style-cn.css

1259 ms

root-cn.css

1167 ms

default.css

385 ms

jquery.js

894 ms

Our browser made a total of 39 requests to load all elements on the main page. We found that 10% of them (4 requests) were addressed to the original Drweb.cn, 85% (33 requests) were made to St.drweb.com and 5% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.3 sec) belongs to the original domain Drweb.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 157.3 kB (44%)

Content Size

353.6 kB

After Optimization

196.4 kB

In fact, the total size of Drweb.cn main page is 353.6 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. Javascripts take 153.7 kB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 20.6 kB

  • Original 27.5 kB
  • After minification 20.5 kB
  • After compression 6.9 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 7.0 kB, which is 26% 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 20.6 kB or 75% of the original size.

Image Optimization

-7%

Potential reduce by 10.0 kB

  • Original 140.0 kB
  • After minification 130.0 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. Dr Web images are well optimized though.

JavaScript Optimization

-66%

Potential reduce by 101.2 kB

  • Original 153.7 kB
  • After minification 144.7 kB
  • After compression 52.5 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 101.2 kB or 66% of the original size.

CSS Optimization

-79%

Potential reduce by 25.5 kB

  • Original 32.4 kB
  • After minification 26.9 kB
  • After compression 6.9 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. Drweb.cn needs all CSS files to be minified and compressed as it can save up to 25.5 kB or 79% of the original size.

Requests Breakdown

Number of requests can be reduced by 20 (53%)

Requests Now

38

After Optimization

18

The browser has sent 38 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Dr Web. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

drweb.cn accessibility score

71

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 valid value for its [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

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

drweb.cn best practices score

75

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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

drweb.cn SEO score

90

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

Mobile Friendly

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/).

Impact

Issue

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    ZH

  • Language Claimed

    CN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Drweb.cn can be misinterpreted by Google and other search engines. Our service has detected that Chinese is used on the page, and it does not match the claimed language. Our system also found out that Drweb.cn 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 Dr Web. 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: