Tools & Wizards About Us
zdvalve.net screenshot

Report Summary

  • 47

    Performance

    Renders faster than
    65% of other websites

  • 84

    Accessibility

    Visual factors better than
    that of 56% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 75

    SEO

    Google-friendlier than
    32% of websites

zdvalve.net

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

Page Load Speed

3.8 sec in total

First Response

379 ms

Resources Loaded

3.1 sec

Page Rendered

305 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 379 ms and then it took 3.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

zdvalve.net performance score

47

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.5 s

68/100

10%

LCP (Largest Contentful Paint)

Value9.0 s

1/100

25%

SI (Speed Index)

Value5.1 s

61/100

10%

TBT (Total Blocking Time)

Value560 ms

53/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value8.9 s

34/100

10%

Network Requests Diagram

zdvalve.net

379 ms

zdvalve.net

272 ms

www.zdvalve.net

526 ms

bootstrap.min.css

99 ms

style.css

192 ms

Our browser made a total of 45 requests to load all elements on the main page. We found that 93% of them (42 requests) were addressed to the original Zdvalve.net, 4% (2 requests) were made to Live.zoosnet.net and 2% (1 request) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (907 ms) relates to the external source Live.zoosnet.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 45.8 kB (4%)

Content Size

1.2 MB

After Optimization

1.1 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. 40% 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 33.6 kB
  • After minification 29.8 kB
  • After compression 5.4 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 3.8 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 28.2 kB or 84% of the original size.

Image Optimization

-0%

Potential reduce by 1.3 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

-17%

Potential reduce by 9.6 kB

  • Original 55.8 kB
  • After minification 55.6 kB
  • After compression 46.2 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 9.6 kB or 17% of the original size.

CSS Optimization

-20%

Potential reduce by 6.8 kB

  • Original 34.0 kB
  • After minification 34.0 kB
  • After compression 27.1 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 6.8 kB or 20% of the original size.

Requests Breakdown

Number of requests can be reduced by 14 (34%)

Requests Now

41

After Optimization

27

  • Images
  • JavaScript
  • CSS

The browser has sent 41 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 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

zdvalve.net

zdvalve.net

379 ms

zdvalve.net

zdvalve.net

272 ms

www.zdvalve.net

www.zdvalve.net

526 ms

bootstrap.min.css

bootstrap.min.css

99 ms

style.css

style.css

192 ms

banner.css

banner.css

196 ms

c_box02.css

c_box02.css

196 ms

search_news1.js

search_news1.js

206 ms

LsJS.aspx

LsJS.aspx

907 ms

jquery-2.1.1.min.js

jquery-2.1.1.min.js

304 ms

jquery.flexisel.js

jquery.flexisel.js

225 ms

bootstrap.min.js

bootstrap.min.js

290 ms

superfish.js

superfish.js

278 ms

jquery.fitvids.js

jquery.fitvids.js

279 ms

custom.js

custom.js

279 ms

jquery.plus.extend.js

jquery.plus.extend.js

279 ms

jquery.main.js

jquery.main.js

331 ms

returnTop.js

returnTop.js

330 ms

gtm.js

gtm.js

107 ms

whatsapp_icon.png

whatsapp_icon.png

134 ms

icons.png

icons.png

143 ms

logo.jpg

logo.jpg

148 ms

banner2.jpg

banner2.jpg

391 ms

banner3.jpg

banner3.jpg

395 ms

banner4.jpg

banner4.jpg

548 ms

banner5.jpg

banner5.jpg

552 ms

left-arrow.png

left-arrow.png

204 ms

right-arrow.png

right-arrow.png

216 ms

shadow.jpg

shadow.jpg

264 ms

1.jpg

1.jpg

300 ms

1.jpg

1.jpg

336 ms

1.jpg

1.jpg

373 ms

1.jpg

1.jpg

406 ms

1.jpg

1.jpg

453 ms

1.jpg

1.jpg

516 ms

1.jpg

1.jpg

516 ms

footemial.png

footemial.png

514 ms

hopro1.png

hopro1.png

493 ms

mainbg1.jpg

mainbg1.jpg

555 ms

mainbg2.jpg

mainbg2.jpg

555 ms

followbg.jpg

followbg.jpg

559 ms

followico.png

followico.png

558 ms

footbg.png

footbg.png

591 ms

VERDANA.TTF

VERDANA.TTF

779 ms

online_en3.gif

online_en3.gif

410 ms

Accessibility Review

zdvalve.net accessibility score

84

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

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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

zdvalve.net SEO score

75

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

    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: