Report Summary

  • 99


    Renders faster than
    96% of other websites

  • 68


    Visual factors better than
    that of 33% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 50


    Google-friendlier than
    18% of websites

和我们一起塑造中国光通信产业的未来 - 光纤在线 - 光通信门户

Page Load Speed

32.9 sec in total

First Response

945 ms

Resources Loaded

31.3 sec

Page Rendered

672 ms screenshot

About Website

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

光纤在线(China Fiber Optics Online)是一家服务于中国光纤通信行业的专业垂直门户网站和咨询机构,以促进大中华区的光通信产业发展,同步世界光通信先进资讯,构筑华人光通信网上家园为宗旨。从2001年成立至今,光纤在线网站一直活跃在光通信产业的各个领域。在10多年的发展过程中,光纤在线逐步将业务拓展到资讯服务以外,包括企业培训,管理咨询,人才服务,活动策划,市场推广,市场研究等等...


Key Findings

We analyzed page load time and found that the first response time was 945 ms and then it took 32 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster.

Performance Metrics performance score


Measured Metrics





FCP (First Contentful Paint)

Value1.6 s



LCP (Largest Contentful Paint)

Value2.0 s



SI (Speed Index)

Value1.8 s



TBT (Total Blocking Time)

Value0 ms



CLS (Cumulative Layout Shift)




TTI (Time to Interactive)

Value1.6 s



Network Requests Diagram

945 ms


1126 ms


706 ms


497 ms


501 ms

Our browser made a total of 310 requests to load all elements on the main page. We found that 95% of them (295 requests) were addressed to the original, 2% (7 requests) were made to and 1% (3 requests) were made to The less responsive or slowest element that took the longest time to load (16.1 sec) belongs to the original domain

Page Optimization Overview & Recommendations

Page size can be reduced by 333.1 kB (14%)

Content Size

2.4 MB

After Optimization

2.1 MB

In fact, the total size of main page is 2.4 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. 35% of websites need less resources to load. Images take 1.9 MB which makes up the majority of the site volume.

HTML Optimization


Potential reduce by 123.0 kB

  • Original 150.9 kB
  • After minification 144.7 kB
  • After compression 27.9 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 123.0 kB or 81% of the original size.

Image Optimization


Potential reduce by 7.8 kB

  • Original 1.9 MB
  • After minification 1.9 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. C Fol images are well optimized though.

JavaScript Optimization


Potential reduce by 201.4 kB

  • Original 353.2 kB
  • After minification 347.5 kB
  • After compression 151.8 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 201.4 kB or 57% of the original size.

CSS Optimization


Potential reduce by 829 B

  • Original 23.9 kB
  • After minification 23.9 kB
  • After compression 23.0 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. has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 258 (85%)

Requests Now


After Optimization


The browser has sent 305 CSS, Javascripts, AJAX and image requests in order to completely render the main page of C Fol. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Accessibility Review accessibility score


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.




Document doesn't have a <title> element

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.




<html> element does not have a [lang] attribute

Best Practices best practices score


Areas of Improvement

Trust and Safety




Does not use HTTPS


Ensure CSP is effective against XSS attacks

SEO Factors SEO score


Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.




Document doesn't have a <title> element

Crawling and Indexing

To appear in search results, crawlers need access to your app.




robots.txt is not valid

Language and Encoding

  • Language Detected


  • Language Claimed


  • Encoding


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

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