Analyze 502 Bad Gateway nginx openresty


Page load speed analysis

  • 14/100

    Poor result
  • 4

    Successful tests
  • 4

    Failed tests
  • First response

    2.3 sec

  • Resources loaded

    12 sec

  • Page rendered

    141 ms

  • Total page load time

    14.4 sec

Click here to check amazing Kefutong content. Otherwise, check out these important facts you probably never knew about

We analyzed page load time and found that the first response time was 2.3 sec and then it took 12.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster. This domain responded with an error, which can significantly jeopardize rating and web reputation

Page optimization

  • HTML 54.4 kB
    Images 71.9 kB
    Javascripts 73.8 kB
    CSS 23.5 kB

    In fact, the total size of main page is 223.5 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 73.8 kB which makes up the majority of the site volume.

    • Original 54.4 kB
    • After minification 42.0 kB
    • After compression 7.8 kB

    HTML optimization

    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 12.3 kB, which is 23% 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 46.6 kB or 86% of the original size.

    • Original 71.9 kB
    • After optimization 53.5 kB

    Image optimization

    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, Kefutong needs image optimization as it can save up to 18.4 kB or 26% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

    • Original 73.8 kB
    • After minification 57.4 kB
    • After compression 13.5 kB

    JavaScript optimization

    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 60.2 kB or 82% of the original size.

    • Original 23.5 kB
    • After minification 19.6 kB
    • After compression 3.5 kB

    CSS optimization

    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. needs all CSS files to be minified and compressed as it can save up to 20.0 kB or 85% of the original size.

Network requests diagram

  • main.asp
  • Html.js
  • style.css
  • Style.css
  • logo.gif
  • top_menu_bg_l.gif
  • register.gif
  • top_menu_line.gif
  • top_menu_bg_r.gif
  • spacer.gif
  • box3_left_top.gif
  • arrow.gif
  • box3_right_top.gif
  • dot_1.gif
  • box3_left_bottom.gif
  • box3_right_bottom.gif
  • index_t2l2.gif
  • index_t2l3.png
  • daili.png
  • learnmore.png
  • index_t2r4.png
  • kefu5.gif
  • btn_02.gif
  • btn_01.gif
  • apply.gif
  • top_bg3.gif
  • top_menu_bg_c.gif
  • menu_select.gif
  • menu.gif
  • box3_center_top.gif
  • box3_left_middle.gif
  • left_bg_2.gif
  • box3_right_middle.gif
  • box3_center_bottom.gif
  • bgl.png
  • index_t2l1.png
  • index_t2bg.png
  • index_t2m.png
  • index_t2r1.png
  • index_t2r3.png
  • index_t2r7.png
  • index_t2r.png
  • bgr.png
  • index_t3_a1.png
  • index_t3_a2.png
  • index_t3_title.png
  • index_t3_a3.png
  • index.html
  • index_t3_b1.png
  • index_t3_b2.png
  • line_h75.gif
  • icon45_0.png
  • icon45_1.png
  • icon45_2.png
  • icon45_3.png
  • icon45_4.png
  • icon45_5.png
  • icon45_6.png
  • icon45_8.png
  • icon45_7.png
  • index_t3_b3.png
  • index_t3_c1.png
  • index_t3_c2.png
  • index_t3_c3.png
  • Arrow_01.gif
  • simple.gif
  • step.gif
  • reg_flow2.gif
  • box_left_top.gif
  • box_top.gif
  • box_right_top.gif
  • box_left_center.gif
  • box_right_center.gif
  • box_left_bottom.gif
  • box_bottom.gif
  • box_right_bottom.gif
  • status.js
  • style_1.js
  • kehutone.js
  • 01.gif
  • transparent.gif
  • ren.gif
  • oem_01.gif
  • offline.gif
  • online.gif
  • top_left.gif
  • top_center.gif
  • top_right.gif
  • line_left.gif
  • line_center.gif
  • line_right.gif
  • foot_left.gif
  • foot_center.gif
  • foot_right.gif

Our browser made a total of 95 requests to load all elements on the main page. We found that 80% of them (76 requests) were addressed to the original, 16% (15 requests) were made to and 4% (4 requests) were made to The less responsive or slowest element that took the longest time to load (6 sec) relates to the external source

Additional info on


The browser has sent 91 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Kefutong. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and as a result speed up the page load time.











Possible request optimization













Poor result


As for redirects, our browser was forwarded to ch/main.asp before it reached this domain.

IP address

This IP address is dedicated to This is the best domain hosting practice .

Normal result

IP Trace

DNS records

Type Host Target/ip TTL Other
A 60

Language and encoding

Good result


N/A  language flag


N/A  language flag





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. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else) and no language is claimed in <html> or <meta> tags either. Our system also found out that 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.

HTTPS certificate

SSL Certificate has no SSL certificate. Web browsing can be safer with HTTPS connection, so we suggest that it should be obtained for this site.

Normal result

Visitor World Map

The server of is located in South Africa, but, unfortunately, we cannot identify the countries where the visitors come from and thus it’s impossible to define if the distance can potentially affect the page load time.

Good result

Poor result

Social Sharing Optimization

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

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