Tools & Wizards About Us

Report Summary

  • 15

    Performance

    Renders faster than
    27% of other websites

  • 76

    Accessibility

    Visual factors better than
    that of 42% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 66

    SEO

    Google-friendlier than
    25% of websites

sfn.cn

国科云-国科控股旗下域名管理专家

Page Load Speed

11.9 sec in total

First Response

756 ms

Resources Loaded

10.3 sec

Page Rendered

885 ms

About Website

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

国科云，国科控股旗下云计算服务商，多年为80%的国家机关、50%的大型央企、50%的大型金融机构以及100+中国500强企业等关键领域核心客户提供域名注册、域名监测、域名解析、SSL证书等一站式域名管理服务以及云解析、云监测、云盾、云服务器等全方位的云计算产品与服务。

Visit sfn.cn

Key Findings

We analyzed Sfn.cn page load time and found that the first response time was 756 ms and then it took 11.2 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

sfn.cn performance score

15

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value11.4 s

0/100

10%

LCP (Largest Contentful Paint)

Value28.6 s

0/100

25%

SI (Speed Index)

Value36.2 s

0/100

10%

TBT (Total Blocking Time)

Value630 ms

48/100

30%

CLS (Cumulative Layout Shift)

Value1.004

2/100

15%

TTI (Time to Interactive)

Value55.8 s

0/100

10%

Network Requests Diagram

sfn.cn

756 ms

www.guokeyun.com

1398 ms

hm.js

1201 ms

echarts.min.js

1783 ms

china.js

1263 ms

Our browser made a total of 121 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Sfn.cn, 97% (117 requests) were made to Guokeyun.com and 2% (2 requests) were made to Hm.baidu.com. The less responsive or slowest element that took the longest time to load (4 sec) relates to the external source Guokeyun.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 2.7 MB (19%)

Content Size

14.7 MB

After Optimization

11.9 MB

  • HTML
  • Images

In fact, the total size of Sfn.cn main page is 14.7 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. 60% of websites need less resources to load. Images take 14.6 MB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 61.0 kB

  • Original 73.3 kB
  • After minification 72.6 kB
  • After compression 12.3 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 61.0 kB or 83% of the original size.

Image Optimization

-18%

Potential reduce by 2.7 MB

  • Original 14.6 MB
  • After minification 11.9 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, Sfn needs image optimization as it can save up to 2.7 MB or 18% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

Requests Breakdown

Number of requests can be reduced by 57 (48%)

Requests Now

118

After Optimization

61

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 118 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sfn. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 41 to 1 for JavaScripts and from 18 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

sfn.cn accessibility score

76

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.

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

sfn.cn best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

sfn.cn SEO score

66

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

High

robots.txt is not valid

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 doesn't use legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    ZH

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Sfn.cn can be misinterpreted by Google and other search engines. Our service has detected that Chinese is used on the page, and it does not match the claimed English language. Our system also found out that Sfn.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 Sfn. 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: