Tools & Wizards About Us
vstons.com screenshot

Report Summary

  • 18

    Performance

    Renders faster than
    34% of other websites

  • 68

    Accessibility

    Visual factors better than
    that of 33% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 76

    SEO

    Google-friendlier than
    35% of websites

vstons.com

燃气壁挂炉厂家_采暖炉加盟_壁挂炉代理-菲思盾壁挂炉品牌

Page Load Speed

60.3 sec in total

First Response

17.8 sec

Resources Loaded

42.2 sec

Page Rendered

282 ms

vstons.com screenshot

About Website

Visit vstons.com now to see the best up-to-date Vstons content and also check out these interesting facts you probably never knew about vstons.com

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Visit vstons.com

Key Findings

We analyzed Vstons.com page load time and found that the first response time was 17.8 sec and then it took 42.5 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 29 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

vstons.com performance score

18

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.0 s

4/100

10%

LCP (Largest Contentful Paint)

Value12.5 s

0/100

25%

SI (Speed Index)

Value15.1 s

1/100

10%

TBT (Total Blocking Time)

Value1,070 ms

25/100

30%

CLS (Cumulative Layout Shift)

Value0.19

64/100

15%

TTI (Time to Interactive)

Value16.3 s

5/100

10%

Network Requests Diagram

vstons.com

17815 ms

index.css

3821 ms

uaredirect.js

11088 ms

jquery.js

16436 ms

bg.jpg

20350 ms

Our browser made a total of 54 requests to load all elements on the main page. We found that 67% of them (36 requests) were addressed to the original Vstons.com, 11% (6 requests) were made to Bdimg.share.baidu.com and 7% (4 requests) were made to Qiao.baidu.com. The less responsive or slowest element that took the longest time to load (20.4 sec) belongs to the original domain Vstons.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 66.7 kB (61%)

Content Size

108.9 kB

After Optimization

42.2 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Vstons.com main page is 108.9 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. Only 10% of websites need less resources to load. HTML takes 42.2 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 34.0 kB

  • Original 42.2 kB
  • After minification 37.4 kB
  • After compression 8.2 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 4.8 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 34.0 kB or 81% of the original size.

Image Optimization

-14%

Potential reduce by 2.6 kB

  • Original 18.8 kB
  • After minification 16.2 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, Vstons needs image optimization as it can save up to 2.6 kB or 14% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-61%

Potential reduce by 20.6 kB

  • Original 34.1 kB
  • After minification 34.1 kB
  • After compression 13.4 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 20.6 kB or 61% of the original size.

CSS Optimization

-69%

Potential reduce by 9.5 kB

  • Original 13.8 kB
  • After minification 11.5 kB
  • After compression 4.3 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. Vstons.com needs all CSS files to be minified and compressed as it can save up to 9.5 kB or 69% of the original size.

Requests Breakdown

Number of requests can be reduced by 20 (83%)

Requests Now

24

After Optimization

4

  • Images
  • JavaScript
  • CSS

The browser has sent 24 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Vstons. 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 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

vstons.com

vstons.com

17815 ms

index.css

index.css

3821 ms

uaredirect.js

uaredirect.js

11088 ms

jquery.js

jquery.js

16436 ms

bg.jpg

bg.jpg

20350 ms

fsd_003.png

fsd_003.png

20201 ms

logo.png

logo.png

7474 ms

fsd_002.png

fsd_002.png

6582 ms

fsd_001.png

fsd_001.png

16723 ms

qt001.png

qt001.png

20200 ms

201311151149399172.png

201311151149399172.png

20199 ms

201311151148276162.png

201311151148276162.png

20200 ms

201311151146484245.png

201311151146484245.png

20200 ms

201311151141073542.png

201311151141073542.png

20200 ms

201311151138243349.png

201311151138243349.png

20200 ms

201311151135236860.png

201311151135236860.png

20200 ms

201311151133159358.png

201311151133159358.png

20199 ms

201512071134564363.gif

201512071134564363.gif

20199 ms

201403032240082072.png

201403032240082072.png

20199 ms

201403032246286263.png

201403032246286263.png

20200 ms

201505201706201490.jpg

201505201706201490.jpg

20212 ms

201505201656035024.jpg

201505201656035024.jpg

20211 ms

2014120836839933.jpg

2014120836839933.jpg

20212 ms

nopic.gif

nopic.gif

20213 ms

2015030341594313.jpg

2015030341594313.jpg

20212 ms

201501201137393785.jpg

201501201137393785.jpg

20213 ms

fsd_004.png

fsd_004.png

20000 ms

fsd_007.png

fsd_007.png

20001 ms

comiis.css

comiis.css

20375 ms

cedaohang.css

cedaohang.css

20376 ms

cedaohang.js

cedaohang.js

20376 ms

wxbt.png

wxbt.png

20376 ms

wxlogo.jpg

wxlogo.jpg

20376 ms

wx.gif

wx.gif

20376 ms

cekefu2.png

cekefu2.png

20148 ms

footerbg.png

footerbg.png

18107 ms

fsd_005.png

fsd_005.png

20158 ms

h.js

h.js

702 ms

25.gif

25.gif

762 ms

b.js

b.js

699 ms

hm.gif

hm.gif

345 ms

shell_v2.js

shell_v2.js

634 ms

bds_s_v2.js

bds_s_v2.js

298 ms

bsl.js

bsl.js

3564 ms

bdsstyle.css

bdsstyle.css

318 ms

getnum

getnum

1164 ms

Enter.php

Enter.php

894 ms

main_icon_invite_mess_api.js

main_icon_invite_mess_api.js

15342 ms

main.css

main.css

1894 ms

fix.css

fix.css

721 ms

version.js

version.js

731 ms

is.png

is.png

313 ms

sc.png

sc.png

586 ms

logger.js

logger.js

608 ms

Accessibility Review

vstons.com accessibility score

68

Accessibility Issues

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

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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.

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

Definition list items are not wrapped in <dl> elements

High

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

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

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

vstons.com 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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

vstons.com SEO score

76

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

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 doesn't use legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    ZH

  • Language Claimed

    N/A

  • Encoding

    GB2312

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Vstons.com can be misinterpreted by Google and other search engines. Our service has detected that Chinese 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 Vstons.com main page’s claimed encoding is gb2312. 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

vstons.com

Open Graph description is not detected on the main page of Vstons. 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: