Tools & Wizards About Us
zhsu.com screenshot

Report Summary

  • 21

    Performance

    Renders faster than
    39% of other websites

  • 76

    Accessibility

    Visual factors better than
    that of 43% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 84

    SEO

    Google-friendlier than
    53% of websites

zhsu.com

PE管材厂家-PE给水管排水管-PPR管材厂家-PE燃气管拖拉管-上海中塑管业

Page Load Speed

4.6 sec in total

First Response

1.1 sec

Resources Loaded

3.3 sec

Page Rendered

137 ms

zhsu.com screenshot

About Website

Welcome to zhsu.com homepage info - get ready to check Zhsu best content right away, or after learning these important things about zhsu.com

上海中塑管业有限公司是一家主要生产PE管、PE管材、PE水管、PE给水管、PE排水管、PE燃气管、PE拖拉管、PE非开挖管、PPR管、PPR水管等管材的得厂家。我们拥有完备的生产流水线和检测设备，从原材料采购到成品出库实行全程控制。深受国内外广大用户的信赖和好评。

Visit zhsu.com

Key Findings

We analyzed Zhsu.com page load time and found that the first response time was 1.1 sec and then it took 3.5 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

zhsu.com performance score

21

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.5 s

1/100

10%

LCP (Largest Contentful Paint)

Value16.7 s

0/100

25%

SI (Speed Index)

Value24.7 s

0/100

10%

TBT (Total Blocking Time)

Value1,340 ms

17/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value16.5 s

5/100

10%

Network Requests Diagram

zhsu.com

1103 ms

public.css

694 ms

ydy.jpg

2218 ms

ydybg.jpg

231 ms

Our browser made a total of 4 requests to load all elements on the main page. We found that all of those requests were addressed to Zhsu.com and no external sources were called. The less responsive or slowest element that took the longest time to load (2.2 sec) belongs to the original domain Zhsu.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 16.7 kB (6%)

Content Size

281.1 kB

After Optimization

264.4 kB

  • HTML
  • Images
  • CSS

In fact, the total size of Zhsu.com main page is 281.1 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only a small number of websites need less resources to load. Images take 262.0 kB which makes up the majority of the site volume.

HTML Optimization

-44%

Potential reduce by 483 B

  • Original 1.1 kB
  • After minification 1.1 kB
  • After compression 623 B

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 483 B or 44% of the original size.

Image Optimization

-1%

Potential reduce by 1.9 kB

  • Original 262.0 kB
  • After minification 260.2 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. Zhsu images are well optimized though.

CSS Optimization

-80%

Potential reduce by 14.4 kB

  • Original 17.9 kB
  • After minification 14.7 kB
  • After compression 3.6 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. Zhsu.com needs all CSS files to be minified and compressed as it can save up to 14.4 kB or 80% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

3

After Optimization

3

  • Images
  • CSS

The browser has sent 3 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zhsu. According to our analytics all requests are already optimized.

Network Requests Diagram

zhsu.com

zhsu.com

1103 ms

public.css

public.css

694 ms

ydy.jpg

ydy.jpg

2218 ms

ydybg.jpg

ydybg.jpg

231 ms

Accessibility Review

zhsu.com accessibility score

76

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

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

zhsu.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

High

Page has valid source maps

SEO Factors

zhsu.com SEO score

84

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 uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    ZH

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Zhsu.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 Zhsu.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

zhsu.com

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