Tools & Wizards About Us
changyao.cn screenshot

Report Summary

  • 88

    Performance

    Renders faster than
    90% of other websites

  • 42

    Accessibility

    Visual factors better than
    that of 19% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 67

    SEO

    Google-friendlier than
    26% of websites

changyao.cn

高能点火器_电厂高能点火器_高能点火装置_电厂高能点火装置-南京昌耀科技实业有限公司

Page Load Speed

5.5 sec in total

First Response

1.7 sec

Resources Loaded

3.6 sec

Page Rendered

148 ms

changyao.cn screenshot

About Website

Visit changyao.cn now to see the best up-to-date Changyao content and also check out these interesting facts you probably never knew about changyao.cn

高能点火器专家,南京昌耀科技实业有限公司是专业的高能点火器、电厂高能点火器等高能点火领域的生产企业

Visit changyao.cn

Key Findings

We analyzed Changyao.cn page load time and found that the first response time was 1.7 sec 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

changyao.cn performance score

88

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.0 s

100/100

10%

LCP (Largest Contentful Paint)

Value1.7 s

99/100

25%

SI (Speed Index)

Value3.8 s

84/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.358

30/100

15%

TTI (Time to Interactive)

Value2.0 s

99/100

10%

Network Requests Diagram

changyao.cn

1738 ms

css.css

442 ms

1.jpg

890 ms

member.jpg

904 ms

search.jpg

1136 ms

Our browser made a total of 33 requests to load all elements on the main page. We found that 85% of them (28 requests) were addressed to the original Changyao.cn, 15% (5 requests) were made to Bdimg.share.baidu.com. The less responsive or slowest element that took the longest time to load (1.8 sec) belongs to the original domain Changyao.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 69.1 kB (15%)

Content Size

469.7 kB

After Optimization

400.5 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Changyao.cn main page is 469.7 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. 15% of websites need less resources to load. Images take 423.5 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 24.8 kB

  • Original 30.6 kB
  • After minification 23.7 kB
  • After compression 5.8 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 6.9 kB, which is 22% 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 24.8 kB or 81% of the original size.

Image Optimization

-10%

Potential reduce by 43.9 kB

  • Original 423.5 kB
  • After minification 379.5 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. Changyao images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 11 B

  • Original 13.0 kB
  • After minification 13.0 kB
  • After compression 13.0 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. This website has mostly compressed JavaScripts.

CSS Optimization

-14%

Potential reduce by 373 B

  • Original 2.6 kB
  • After minification 2.5 kB
  • After compression 2.3 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. Changyao.cn needs all CSS files to be minified and compressed as it can save up to 373 B or 14% of the original size.

Requests Breakdown

Number of requests can be reduced by 6 (19%)

Requests Now

32

After Optimization

26

  • Images
  • JavaScript
  • CSS

The browser has sent 32 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Changyao. 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

changyao.cn

changyao.cn

1738 ms

css.css

css.css

442 ms

1.jpg

1.jpg

890 ms

member.jpg

member.jpg

904 ms

search.jpg

search.jpg

1136 ms

seek.jpg

seek.jpg

696 ms

2.jpg

2.jpg

716 ms

link.jpg

link.jpg

708 ms

butterfly.jpg

butterfly.jpg

1366 ms

logo.jpg

logo.jpg

954 ms

photo.jpg

photo.jpg

1804 ms

brief.jpg

brief.jpg

831 ms

product.jpg

product.jpg

655 ms

bg1.jpg

bg1.jpg

725 ms

201232693458984.jpg

201232693458984.jpg

855 ms

20078423611498.jpg

20078423611498.jpg

1844 ms

20078501139301.jpg

20078501139301.jpg

1180 ms

2007850596852.jpg

2007850596852.jpg

966 ms

20078511214549.jpg

20078511214549.jpg

1080 ms

200785153350776.jpg

200785153350776.jpg

1175 ms

200785153112569.jpg

200785153112569.jpg

1215 ms

200785152735683.jpg

200785152735683.jpg

1313 ms

line.jpg

line.jpg

1485 ms

15.jpg

15.jpg

1492 ms

more.jpg

more.jpg

1542 ms

4.jpg

4.jpg

1560 ms

5.jpg

5.jpg

1730 ms

biao.jpg

biao.jpg

1724 ms

shell_v2.js

shell_v2.js

1010 ms

logger.js

logger.js

314 ms

bds_s_v2.js

bds_s_v2.js

509 ms

bdsstyle.css

bdsstyle.css

265 ms

r0.gif

r0.gif

305 ms

Accessibility Review

changyao.cn accessibility score

42

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

<input type="image"> elements do not have [alt] text

High

Form elements do not have associated labels

High

Links do not have a discernible name

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Some elements have a [tabindex] value greater than 0

Best Practices

changyao.cn best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

SEO Factors

changyao.cn SEO score

67

Search Engine Optimization Advices

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

    ZH

  • Language Claimed

    N/A

  • Encoding

    GB2312

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

changyao.cn

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