Tools & Wizards About Us

Report Summary

  • 51

    Performance

    Renders faster than
    69% of other websites

  • 51

    Accessibility

    Visual factors better than
    that of 21% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 54

    SEO

    Google-friendlier than
    19% of websites

yunvm.com

大带宽免费云主机 上海云主机 IDC 万兆接入 服务器租用托管-YUNVM-万根云计算

Page Load Speed

58.2 sec in total

First Response

13.2 sec

Resources Loaded

44.3 sec

Page Rendered

697 ms

About Website

Click here to check amazing YUNVM content for China. Otherwise, check out these important facts you probably never knew about yunvm.com

YUNVM万根云主机做最专业的大带宽云主机，拥有遍布国内各大城市的数据中心，万兆接入，实时开通。YUNVM服务内容包括在线代理服务器、云服务器试用、云服务器租用、云服务器搭建等产品和服务。云存储服务器提供速度最快的SSD存储，YUNVM拥有全自助管理、在线动态迁移、实时备份、快照管理、自助重装系统等领先技术。

Visit yunvm.com

Key Findings

We analyzed Yunvm.com page load time and found that the first response time was 13.2 sec and then it took 45 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster. Unfortunately, there were 4 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

yunvm.com performance score

51

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.5 s

34/100

10%

LCP (Largest Contentful Paint)

Value10.0 s

0/100

25%

SI (Speed Index)

Value9.6 s

11/100

10%

TBT (Total Blocking Time)

Value90 ms

99/100

30%

CLS (Cumulative Layout Shift)

Value0.134

80/100

15%

TTI (Time to Interactive)

Value7.8 s

44/100

10%

Network Requests Diagram

yunvm.com

13167 ms

bootstrap.min.css

6339 ms

site.new.css

1829 ms

price_board.css

2736 ms

jquery.min.js

18205 ms

Our browser made a total of 32 requests to load all elements on the main page. We found that 91% of them (29 requests) were addressed to the original Yunvm.com, 6% (2 requests) were made to Hm.baidu.com and 3% (1 request) were made to Bs.baidu.com. The less responsive or slowest element that took the longest time to load (20.1 sec) belongs to the original domain Yunvm.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 84.4 kB (72%)

Content Size

117.8 kB

After Optimization

33.4 kB

  • HTML
  • Images
  • CSS

In fact, the total size of Yunvm.com main page is 117.8 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. 20% of websites need less resources to load. HTML takes 68.0 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 55.5 kB

  • Original 68.0 kB
  • After minification 56.6 kB
  • After compression 12.5 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 11.4 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 55.5 kB or 82% of the original size.

Image Optimization

-29%

Potential reduce by 5.8 kB

  • Original 20.1 kB
  • After minification 14.3 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, YUNVM needs image optimization as it can save up to 5.8 kB or 29% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

CSS Optimization

-78%

Potential reduce by 23.1 kB

  • Original 29.7 kB
  • After minification 22.4 kB
  • After compression 6.6 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. Yunvm.com needs all CSS files to be minified and compressed as it can save up to 23.1 kB or 78% of the original size.

Requests Breakdown

Number of requests can be reduced by 11 (41%)

Requests Now

27

After Optimization

16

  • Images
  • JavaScript
  • CSS

The browser has sent 27 CSS, Javascripts, AJAX and image requests in order to completely render the main page of YUNVM. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

yunvm.com accessibility score

51

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

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

Best Practices

yunvm.com 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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

yunvm.com SEO score

54

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

High

robots.txt is not valid

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

    ZH

  • Language Claimed

    ZH

  • Encoding

    UTF-8

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