Report Summary

  • 28

    Performance

    Renders faster than
    48% of other websites

  • 59

    Accessibility

    Visual factors better than
    that of 35% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    34% of websites

  • 85

    SEO

    Google-friendlier than
    62% of websites

sichem.cn

沈阳网站建设_沈阳小程序开发_app软件定制-沈阳示剑网络科技股份有限公司

Page Load Speed

74.2 sec in total

First Response

1.5 sec

Resources Loaded

72.3 sec

Page Rendered

375 ms

sichem.cn screenshot

About Website

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

沈阳网站建设、沈阳网站制作、沈阳app软件定制开发、微信小程序制作,就找示剑网络,13年技术开发经验的沈阳网络公司,辽宁股权交易中心挂牌企业,专业,靠谱。热线:024-22503777

Visit sichem.cn

Key Findings

We analyzed Sichem.cn page load time and found that the first response time was 1.5 sec and then it took 72.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster. Unfortunately, there were 22 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

sichem.cn performance score

28

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.2 s

8/100

10%

LCP (Largest Contentful Paint)

Value10.9 s

0/100

25%

SI (Speed Index)

Value17.3 s

0/100

10%

TBT (Total Blocking Time)

Value620 ms

48/100

30%

CLS (Cumulative Layout Shift)

Value0.151

75/100

15%

TTI (Time to Interactive)

Value13.2 s

12/100

10%

Network Requests Diagram

sichem.cn

1524 ms

www.sichem.cn

15680 ms

bootstrap.min.css

11546 ms

common.css

7565 ms

head.css

7639 ms

Our browser made a total of 49 requests to load all elements on the main page. We found that 82% of them (40 requests) were addressed to the original Sichem.cn, 6% (3 requests) were made to Hm.baidu.com and 2% (1 request) were made to S11.cnzz.com. The less responsive or slowest element that took the longest time to load (20.5 sec) belongs to the original domain Sichem.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 514.2 kB (69%)

Content Size

748.8 kB

After Optimization

234.6 kB

In fact, the total size of Sichem.cn main page is 748.8 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. 20% of websites need less resources to load. Javascripts take 351.4 kB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 68.1 kB

  • Original 81.1 kB
  • After minification 65.4 kB
  • After compression 13.0 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 15.6 kB, which is 19% 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 68.1 kB or 84% of the original size.

Image Optimization

-25%

Potential reduce by 29.0 kB

  • Original 114.7 kB
  • After minification 85.7 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. Obviously, Sichem needs image optimization as it can save up to 29.0 kB or 25% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-70%

Potential reduce by 247.2 kB

  • Original 351.4 kB
  • After minification 350.4 kB
  • After compression 104.2 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 247.2 kB or 70% of the original size.

CSS Optimization

-84%

Potential reduce by 169.9 kB

  • Original 201.7 kB
  • After minification 174.1 kB
  • After compression 31.8 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. Sichem.cn needs all CSS files to be minified and compressed as it can save up to 169.9 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 19 (79%)

Requests Now

24

After Optimization

5

The browser has sent 24 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sichem. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

sichem.cn 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

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.

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>).

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

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

sichem.cn best practices score

67

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

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

sichem.cn SEO score

85

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

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 Sichem.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 Sichem.cn 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 Sichem. 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: