Tools & Wizards About Us
zfvcn.com screenshot

Report Summary

  • 53

    Performance

    Renders faster than
    70% of other websites

  • 97

    Accessibility

    Visual factors better than
    that of 91% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 91

    SEO

    Google-friendlier than
    70% of websites

zfvcn.com

China Triple Offset, Double Offset, Concentric Butterfly Valve Suppliers, Manufacturers, Factory - Zhejiang Zhengfeng Valve Co.,Ltd

Page Load Speed

3.3 sec in total

First Response

389 ms

Resources Loaded

2 sec

Page Rendered

911 ms

zfvcn.com screenshot

About Website

Click here to check amazing Zfvcn content. Otherwise, check out these important facts you probably never knew about zfvcn.com

Zhejiang Zhengfeng Co.,Ltd, established in 1993, hold certificates of CE, API6D, ISO9001, ISO14001 and etc, is professional in designing, manufacturing and distributing industrial valves with standard...

Visit zfvcn.com

Key Findings

We analyzed Zfvcn.com page load time and found that the first response time was 389 ms and then it took 2.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

zfvcn.com performance score

53

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.9 s

25/100

10%

LCP (Largest Contentful Paint)

Value5.8 s

15/100

25%

SI (Speed Index)

Value5.0 s

64/100

10%

TBT (Total Blocking Time)

Value130 ms

96/100

30%

CLS (Cumulative Layout Shift)

Value0.318

36/100

15%

TTI (Time to Interactive)

Value5.9 s

65/100

10%

Network Requests Diagram

zfvcn.com

389 ms

www.zfvcn.com

526 ms

css2

78 ms

style.css

134 ms

swiper.min.css

131 ms

Our browser made a total of 55 requests to load all elements on the main page. We found that 40% of them (22 requests) were addressed to the original Zfvcn.com, 27% (15 requests) were made to Css02.v15cdn.com and 18% (10 requests) were made to Img01.v15cdn.com. The less responsive or slowest element that took the longest time to load (955 ms) belongs to the original domain Zfvcn.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 76.7 kB (6%)

Content Size

1.2 MB

After Optimization

1.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Zfvcn.com main page is 1.2 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 1.1 MB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 23.0 kB

  • Original 29.7 kB
  • After minification 28.7 kB
  • After compression 6.8 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 23.0 kB or 77% of the original size.

Image Optimization

-5%

Potential reduce by 50.5 kB

  • Original 1.1 MB
  • After minification 1.0 MB

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. Zfvcn images are well optimized though.

JavaScript Optimization

-2%

Potential reduce by 1.9 kB

  • Original 89.6 kB
  • After minification 89.4 kB
  • After compression 87.7 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. This website has mostly compressed JavaScripts.

CSS Optimization

-4%

Potential reduce by 1.2 kB

  • Original 29.9 kB
  • After minification 29.9 kB
  • After compression 28.7 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. Zfvcn.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 29 (60%)

Requests Now

48

After Optimization

19

  • Images
  • JavaScript
  • CSS

The browser has sent 48 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zfvcn. 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 7 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

zfvcn.com

zfvcn.com

389 ms

www.zfvcn.com

www.zfvcn.com

526 ms

css2

css2

78 ms

style.css

style.css

134 ms

swiper.min.css

swiper.min.css

131 ms

animate.min.css

animate.min.css

132 ms

other.css

other.css

83 ms

en.webp

en.webp

166 ms

Mail.webp

Mail.webp

152 ms

phoneTop.webp

phoneTop.webp

149 ms

rectangle.webp

rectangle.webp

150 ms

nav.webp

nav.webp

173 ms

search.webp

search.webp

167 ms

logo202210101649503144708.png

logo202210101649503144708.png

153 ms

ba202210100842501599356.jpg

ba202210100842501599356.jpg

673 ms

ba202210100843335817782.jpg

ba202210100843335817782.jpg

891 ms

ba3ed39099-506c-4566-829a-81b417468be3.jpg

ba3ed39099-506c-4566-829a-81b417468be3.jpg

955 ms

p202210101501400898723.jpg

p202210101501400898723.jpg

564 ms

p202210121350095940809.jpg

p202210121350095940809.jpg

521 ms

p202210100938154381815.jpg

p202210100938154381815.jpg

541 ms

lanjiazai.gif

lanjiazai.gif

595 ms

pt.webp

pt.webp

163 ms

de.webp

de.webp

164 ms

fr.webp

fr.webp

173 ms

ru.webp

ru.webp

175 ms

it.webp

it.webp

177 ms

ja.webp

ja.webp

215 ms

ar.webp

ar.webp

212 ms

es.webp

es.webp

185 ms

jquery-3.6.0.js

jquery-3.6.0.js

155 ms

Site_Common.js

Site_Common.js

169 ms

swiper.min.js

swiper.min.js

180 ms

index.js

index.js

175 ms

count.js

count.js

171 ms

float15453.js

float15453.js

629 ms

Other.js

Other.js

640 ms

Location.webp

Location.webp

169 ms

phone.webp

phone.webp

167 ms

mail1.webp

mail1.webp

171 ms

who.jpg

who.jpg

739 ms

homeAdvantage1.png

homeAdvantage1.png

781 ms

homeAdvantage2.png

homeAdvantage2.png

714 ms

homeAdvantage3.png

homeAdvantage3.png

763 ms

homeAdvantage4.png

homeAdvantage4.png

790 ms

n2024073116033650796.jpg

n2024073116033650796.jpg

930 ms

n202407261542058b280.jpg

n202407261542058b280.jpg

907 ms

iconfont.css

iconfont.css

44 ms

message.css

message.css

56 ms

s

s

726 ms

PAJJhLM6sSoWKfWCAAwDAjgbRAAB42mNgYGBkAIIbCZo5IPrmUn0hGA0AO8EFTQAA

PAJJhLM6sSoWKfWCAAwDAjgbRAAB42mNgYGBkAIIbCZo5IPrmUn0hGA0AO8EFTQAA

1 ms

font_2756233_91ow63yy3sd.woff

font_2756233_91ow63yy3sd.woff

767 ms

iconfont.ttf

iconfont.ttf

652 ms

iconfontvk.woff

iconfontvk.woff

104 ms

iconfont.woff

iconfont.woff

80 ms

wmkc-ico24.webp

wmkc-ico24.webp

24 ms

Accessibility Review

zfvcn.com accessibility score

97

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.

Best Practices

zfvcn.com best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

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

Page has valid source maps

SEO Factors

zfvcn.com SEO score

91

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

Links do not have descriptive text

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

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

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

zfvcn.com

Open Graph data is detected on the main page of Zfvcn. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: