Tools & Wizards About Us
zdzn.com screenshot

Report Summary

  • 68

    Performance

    Renders faster than
    80% of other websites

  • 80

    Accessibility

    Visual factors better than
    that of 49% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

zdzn.com

NewsZdzn| Renowned for its business journalism, The Wall Street Journal covers finance, markets, corporate news, and more. With a focus on global econ...

Page Load Speed

16.4 sec in total

First Response

2 sec

Resources Loaded

14.2 sec

Page Rendered

202 ms

zdzn.com screenshot

About Website

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

杭州浙大知能科技有限公司拥有多位LED研发精英,LED路灯,LED补光灯,LED闪光灯,LED投光灯,LED工矿灯等产品在同行业中技术以及性能遥遥领先,多项技术获得国家专利,所有产品均经省级质量检测机构检测通过.

Visit zdzn.com

Key Findings

We analyzed Zdzn.com page load time and found that the first response time was 2 sec and then it took 14.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

zdzn.com performance score

68

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.7 s

12/100

10%

LCP (Largest Contentful Paint)

Value4.7 s

32/100

25%

SI (Speed Index)

Value5.3 s

59/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value4.7 s

79/100

10%

Network Requests Diagram

zdzn.com

1952 ms

css.css

975 ms

LsJS.aspx

2587 ms

top_bj.jpg

1659 ms

logo_tcl.png

2320 ms

Our browser made a total of 20 requests to load all elements on the main page. We found that 70% of them (14 requests) were addressed to the original Zdzn.com, 25% (5 requests) were made to Dht.zoosnet.net and 5% (1 request) were made to Awt.zoossoft.com. The less responsive or slowest element that took the longest time to load (11.2 sec) belongs to the original domain Zdzn.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 27.8 kB (50%)

Content Size

55.4 kB

After Optimization

27.6 kB

  • HTML
  • Images
  • CSS

In fact, the total size of Zdzn.com main page is 55.4 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 30.7 kB which makes up the majority of the site volume.

HTML Optimization

-67%

Potential reduce by 9.9 kB

  • Original 14.8 kB
  • After minification 14.4 kB
  • After compression 4.9 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 9.9 kB or 67% of the original size.

Image Optimization

-33%

Potential reduce by 10.3 kB

  • Original 30.7 kB
  • After minification 20.4 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. Obviously, Zdzn needs image optimization as it can save up to 10.3 kB or 33% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

CSS Optimization

-76%

Potential reduce by 7.6 kB

  • Original 10.0 kB
  • After minification 8.2 kB
  • After compression 2.4 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. Zdzn.com needs all CSS files to be minified and compressed as it can save up to 7.6 kB or 76% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

19

After Optimization

19

  • Images
  • JavaScript
  • CSS

The browser has sent 19 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zdzn. According to our analytics all requests are already optimized.

Network Requests Diagram

zdzn.com

zdzn.com

1952 ms

css.css

css.css

975 ms

LsJS.aspx

LsJS.aspx

2587 ms

top_bj.jpg

top_bj.jpg

1659 ms

logo_tcl.png

logo_tcl.png

2320 ms

top_top.png

top_top.png

1375 ms

china.jpg

china.jpg

1916 ms

eng.jpg

eng.jpg

1914 ms

form_bg.jpg

form_bg.jpg

1803 ms

search.jpg

search.jpg

5719 ms

%E6%96%B0%E9%97%BB%E8%B5%84%E8%AE%AF.JPG

%E6%96%B0%E9%97%BB%E8%B5%84%E8%AE%AF.JPG

8185 ms

iphone-ipad-apps.jpg

iphone-ipad-apps.jpg

4538 ms

4cac6da3bf44d.jpg

4cac6da3bf44d.jpg

10072 ms

%E6%88%90%E5%8A%9F%E6%A1%88%E4%BE%8B2.JPG

%E6%88%90%E5%8A%9F%E6%A1%88%E4%BE%8B2.JPG

11239 ms

4cac6da3bf44d2.jpg

4cac6da3bf44d2.jpg

10203 ms

JS5.aspx

JS5.aspx

6966 ms

2.gif

2.gif

1322 ms

JS_Float.aspx

JS_Float.aspx

2685 ms

1.gif

1.gif

2336 ms

7.gif

7.gif

1090 ms

Accessibility Review

zdzn.com accessibility score

80

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

Links do not have a discernible name

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

Best Practices

zdzn.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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

zdzn.com SEO score

100

Search Engine Optimization Advices

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

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 Zdzn.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 Zdzn.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

zdzn.com

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