Tools & Wizards About Us
zdvalve.net screenshot

Report Summary

  • 43

    Performance

    Renders faster than
    62% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 83% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

zdvalve.net

middle pressure butterfly valve, ball valve, tilting disc check valve—Zhengzhou City Zhengdie Valve Co.,Ltd.

Page Load Speed

4.2 sec in total

First Response

431 ms

Resources Loaded

3.5 sec

Page Rendered

222 ms

zdvalve.net screenshot

About Website

Welcome to zdvalve.net homepage info - get ready to check Zd Valve best content right away, or after learning these important things about zdvalve.net

Zhengzhou City Zhengdie Valve Co.,Ltd. (ZD Valve), a member of China Valves Technology Inc. is specialized in developing and manufacturing low and middle pressure butterfly valve, ball valve, tilting ...

Visit zdvalve.net

Key Findings

We analyzed Zdvalve.net page load time and found that the first response time was 431 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

zdvalve.net performance score

43

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.5 s

68/100

10%

LCP (Largest Contentful Paint)

Value7.4 s

4/100

25%

SI (Speed Index)

Value5.3 s

59/100

10%

TBT (Total Blocking Time)

Value790 ms

37/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value9.3 s

31/100

10%

Network Requests Diagram

zdvalve.net

431 ms

zdvalve.net

263 ms

www.zdvalve.net

495 ms

bootstrap.min.css

100 ms

style.css

172 ms

Our browser made a total of 54 requests to load all elements on the main page. We found that 78% of them (42 requests) were addressed to the original Zdvalve.net, 9% (5 requests) were made to Live.zoosnet.net and 7% (4 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (1.3 sec) relates to the external source Live.zoosnet.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 48.2 kB (4%)

Content Size

1.2 MB

After Optimization

1.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Zdvalve.net 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. 50% of websites need less resources to load. Images take 1.1 MB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 28.2 kB

  • Original 33.8 kB
  • After minification 30.2 kB
  • After compression 5.6 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 3.6 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 28.2 kB or 84% of the original size.

Image Optimization

-0%

Potential reduce by 2.0 kB

  • Original 1.1 MB
  • After minification 1.1 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. Zd Valve images are well optimized though.

JavaScript Optimization

-14%

Potential reduce by 10.9 kB

  • Original 78.0 kB
  • After minification 77.6 kB
  • After compression 67.1 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 10.9 kB or 14% of the original size.

CSS Optimization

-20%

Potential reduce by 7.1 kB

  • Original 35.3 kB
  • After minification 35.3 kB
  • After compression 28.3 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. Zdvalve.net needs all CSS files to be minified and compressed as it can save up to 7.1 kB or 20% of the original size.

Requests Breakdown

Number of requests can be reduced by 19 (38%)

Requests Now

50

After Optimization

31

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 50 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zd Valve. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 16 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

zdvalve.net

zdvalve.net

431 ms

zdvalve.net

zdvalve.net

263 ms

www.zdvalve.net

www.zdvalve.net

495 ms

bootstrap.min.css

bootstrap.min.css

100 ms

style.css

style.css

172 ms

banner.css

banner.css

192 ms

c_box02.css

c_box02.css

192 ms

search_news1.js

search_news1.js

203 ms

LsJS.aspx

LsJS.aspx

1277 ms

jquery-2.1.1.min.js

jquery-2.1.1.min.js

300 ms

jquery.flexisel.js

jquery.flexisel.js

218 ms

bootstrap.min.js

bootstrap.min.js

245 ms

superfish.js

superfish.js

269 ms

jquery.fitvids.js

jquery.fitvids.js

269 ms

custom.js

custom.js

270 ms

jquery.plus.extend.js

jquery.plus.extend.js

270 ms

jquery.main.js

jquery.main.js

322 ms

returnTop.js

returnTop.js

322 ms

gtm.js

gtm.js

79 ms

whatsapp_icon.png

whatsapp_icon.png

127 ms

icons.png

icons.png

129 ms

logo.jpg

logo.jpg

131 ms

banner2.jpg

banner2.jpg

411 ms

banner3.jpg

banner3.jpg

391 ms

banner4.jpg

banner4.jpg

547 ms

banner5.jpg

banner5.jpg

581 ms

left-arrow.png

left-arrow.png

206 ms

right-arrow.png

right-arrow.png

205 ms

shadow.jpg

shadow.jpg

281 ms

1.jpg

1.jpg

295 ms

1.jpg

1.jpg

347 ms

1.jpg

1.jpg

371 ms

1.jpg

1.jpg

423 ms

1.jpg

1.jpg

442 ms

1.jpg

1.jpg

455 ms

1.jpg

1.jpg

474 ms

footemial.png

footemial.png

486 ms

hopro1.png

hopro1.png

490 ms

mainbg1.jpg

mainbg1.jpg

502 ms

mainbg2.jpg

mainbg2.jpg

522 ms

followbg.jpg

followbg.jpg

555 ms

followico.png

followico.png

560 ms

footbg.png

footbg.png

567 ms

VERDANA.TTF

VERDANA.TTF

794 ms

js

js

48 ms

destination

destination

87 ms

analytics.js

analytics.js

20 ms

collect

collect

41 ms

collect

collect

69 ms

js

js

55 ms

JS5_2.css

JS5_2.css

217 ms

2.gif

2.gif

425 ms

mobileofflineimgsrc_en.jpg

mobileofflineimgsrc_en.jpg

460 ms

7.gif

7.gif

428 ms

Accessibility Review

zdvalve.net accessibility score

94

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

Links do not have a discernible name

Best Practices

zdvalve.net 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

zdvalve.net SEO score

83

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 doesn't use legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    ZH

  • Encoding

    UTF-8

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

zdvalve.net

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