Report Summary

  • 62

    Performance

    Renders faster than
    77% of other websites

  • 59

    Accessibility

    Visual factors better than
    that of 26% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 85

    SEO

    Google-friendlier than
    56% of websites

jsjd.cc

晶盛机电

Page Load Speed

7.3 sec in total

First Response

688 ms

Resources Loaded

6.2 sec

Page Rendered

336 ms

jsjd.cc screenshot

About Website

Visit jsjd.cc now to see the best up-to-date Jsjd content and also check out these interesting facts you probably never knew about jsjd.cc

晶盛机电是国内领先的专注于“先进材料、先进装备”的高新技术企业,围绕硅、蓝宝石、碳化硅三大半导体材料提供光伏和半导体等产业链装备,并延伸至化合物衬底材料领域以及核心辅材耗材等,并为客户提供智慧工厂解决方案。

Visit jsjd.cc

Key Findings

We analyzed Jsjd.cc page load time and found that the first response time was 688 ms and then it took 6.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

jsjd.cc performance score

62

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.1 s

82/100

10%

LCP (Largest Contentful Paint)

Value6.9 s

6/100

25%

SI (Speed Index)

Value10.6 s

7/100

10%

TBT (Total Blocking Time)

Value80 ms

99/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value5.5 s

70/100

10%

Network Requests Diagram

jsjd.cc

688 ms

www.jsjd.cc

1659 ms

animate.min.css

446 ms

swiper.min.css

669 ms

style.css

1352 ms

Our browser made a total of 37 requests to load all elements on the main page. We found that 73% of them (27 requests) were addressed to the original Jsjd.cc, 27% (10 requests) were made to Jsjidian.oss-cn-hangzhou.aliyuncs.com. The less responsive or slowest element that took the longest time to load (2.4 sec) relates to the external source Jsjidian.oss-cn-hangzhou.aliyuncs.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 3.7 MB (29%)

Content Size

12.5 MB

After Optimization

8.8 MB

In fact, the total size of Jsjd.cc main page is 12.5 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. 25% of websites need less resources to load. Images take 12.4 MB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 28.2 kB

  • Original 33.7 kB
  • After minification 25.7 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 8.0 kB, which is 24% 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

-29%

Potential reduce by 3.7 MB

  • Original 12.4 MB
  • After minification 8.8 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. Obviously, Jsjd needs image optimization as it can save up to 3.7 MB or 29% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-1%

Potential reduce by 537 B

  • Original 39.8 kB
  • After minification 39.8 kB
  • After compression 39.3 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

-10%

Potential reduce by 2.2 kB

  • Original 21.3 kB
  • After minification 21.3 kB
  • After compression 19.1 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. Jsjd.cc has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 11 (33%)

Requests Now

33

After Optimization

22

The browser has sent 33 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jsjd. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

jsjd.cc accessibility score

59

Accessibility Issues

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

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

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

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

jsjd.cc best practices score

83

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

SEO Factors

jsjd.cc SEO score

85

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

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

    ZH

  • Language Claimed

    ZH

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Jsjd.cc can be misinterpreted by Google and other search engines. Our service has detected that Chinese is used on the page, and it matches the claimed language. Our system also found out that Jsjd.cc 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

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