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zjdongda.com screenshot

Report Summary

  • 75

    Performance

    Renders faster than
    83% of other websites

  • 54

    Accessibility

    Visual factors better than
    that of 23% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 58

    SEO

    Google-friendlier than
    21% of websites

zjdongda.com

浙江东大水业集团有限公司—致力于反渗透、纳滤、超滤、微滤 国产 EDI 膜块及整机等膜分离装置，各种净水管路专用水龙头、球阀、管接件的生产

Page Load Speed

6 sec in total

First Response

1.2 sec

Resources Loaded

4.7 sec

Page Rendered

97 ms

zjdongda.com screenshot

About Website

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

Zhejiang DD Water Industry Co., Ltd. is specialized in water treatment equipment and RO fittings.Our main products include all kinds of RO faucets and fittings,EDI,SDI,large flow security filter,fount...

Visit zjdongda.com

Key Findings

We analyzed Zjdongda.com page load time and found that the first response time was 1.2 sec and then it took 4.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

zjdongda.com performance score

75

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value0.6 s

100/100

10%

LCP (Largest Contentful Paint)

Value4.8 s

31/100

25%

SI (Speed Index)

Value6.8 s

34/100

10%

TBT (Total Blocking Time)

Value40 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.005

100/100

15%

TTI (Time to Interactive)

Value4.3 s

85/100

10%

Network Requests Diagram

zjdongda.com

1195 ms

dsaw.jpg

442 ms

homecg_01.jpg

443 ms

homecg_02.jpg

1313 ms

homecg_03.jpg

452 ms

Our browser made a total of 32 requests to load all elements on the main page. We found that all of those requests were addressed to Zjdongda.com and no external sources were called. The less responsive or slowest element that took the longest time to load (2.8 sec) belongs to the original domain Zjdongda.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 204.8 kB (23%)

Content Size

898.3 kB

After Optimization

693.5 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Zjdongda.com main page is 898.3 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. Images take 659.2 kB which makes up the majority of the site volume.

HTML Optimization

-70%

Potential reduce by 6.1 kB

  • Original 8.7 kB
  • After minification 8.5 kB
  • After compression 2.6 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. 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 6.1 kB or 70% of the original size.

Image Optimization

-1%

Potential reduce by 8.5 kB

  • Original 659.2 kB
  • After minification 650.7 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. Zjdongda images are well optimized though.

JavaScript Optimization

-83%

Potential reduce by 190.2 kB

  • Original 230.3 kB
  • After minification 133.6 kB
  • After compression 40.1 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 190.2 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 7 (25%)

Requests Now

28

After Optimization

21

  • Images
  • JavaScript

The browser has sent 28 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zjdongda. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.

Network Requests Diagram

zjdongda.com

zjdongda.com

1195 ms

dsaw.jpg

dsaw.jpg

442 ms

homecg_01.jpg

homecg_01.jpg

443 ms

homecg_02.jpg

homecg_02.jpg

1313 ms

homecg_03.jpg

homecg_03.jpg

452 ms

homecg_04.jpg

homecg_04.jpg

457 ms

banner01.jpg

banner01.jpg

462 ms

banner02.jpg

banner02.jpg

661 ms

banner03.jpg

banner03.jpg

662 ms

banner04.jpg

banner04.jpg

678 ms

banner05.jpg

banner05.jpg

683 ms

banner06.jpg

banner06.jpg

691 ms

banner07.jpg

banner07.jpg

1101 ms

homecg_06.jpg

homecg_06.jpg

666 ms

homecg_07.jpg

homecg_07.jpg

686 ms

HOME_08.jpg

HOME_08.jpg

1588 ms

slideshow.js

slideshow.js

2792 ms

HOME3_08.jpg

HOME3_08.jpg

1341 ms

HOME2_08.jpg

HOME2_08.jpg

2828 ms

HOME1_08.jpg

HOME1_08.jpg

1758 ms

HOME4_08.jpg

HOME4_08.jpg

1755 ms

homecg_09.jpg

homecg_09.jpg

1566 ms

homecg_10.jpg

homecg_10.jpg

1842 ms

prev.png

prev.png

222 ms

next.png

next.png

223 ms

ajax-loader.gif

ajax-loader.gif

221 ms

banner01s.gif

banner01s.gif

224 ms

banner02s.gif

banner02s.gif

223 ms

banner03s.gif

banner03s.gif

451 ms

banner04s.gif

banner04s.gif

223 ms

banner05s.gif

banner05s.gif

228 ms

banner06s.gif

banner06s.gif

230 ms

Accessibility Review

zjdongda.com accessibility score

54

Accessibility Issues

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

zjdongda.com best practices score

58

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

Browser errors were logged to the console

SEO Factors

zjdongda.com SEO score

58

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

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    GB2312

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Zjdongda.com can be misinterpreted by Google and other search engines. Our service has detected that English 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 Zjdongda.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

zjdongda.com

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