Analyze 502 Bad Gateway nginx openresty

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Page load speed analysis

  • 60/100

    Normal result
  • 7

    Successful tests
  • 1

    Failed test
  • First response

    4.7 sec

  • Resources loaded

    16 sec

  • Page rendered

    603 ms

  • Total page load time

    21.3 sec

Click here to check amazing Incards 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 4.7 sec and then it took 16.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Page optimization

  • HTML 29.8 kB
    Images 338.0 kB
    Javascripts 348.3 kB
    CSS 14.1 kB

    In fact, the total size of main page is 730.2 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. 30% of websites need less resources to load. Javascripts take 348.3 kB which makes up the majority of the site volume.

    • Original 29.8 kB
    • After minification 25.3 kB
    • After compression 8.3 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 4.5 kB, which is 15% 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 21.5 kB or 72% of the original size.

    • Original 338.0 kB
    • After optimization 306.9 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. Incards images are well optimized though.

    • Original 348.3 kB
    • After minification 345.1 kB
    • After compression 119.7 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 228.7 kB or 66% of the original size.

    • Original 14.1 kB
    • After minification 13.4 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 10.6 kB or 75% of the original size.

Network requests diagram

  • 0.css
  • pptBox.js
  • tankuang.js
  • shouye.css
  • tishi1.js
  • tishi2.js
  • wb.js
  • ad.css
  • stat.php
  • ad_02.jpg
  • top_01.png
  • shijingzhanshi.jpg
  • 400.gif
  • logo.gif
  • 0.gif
  • 1432177746807556.jpg
  • 1368520463369772.jpg_summ
  • 1400662460640712.jpg_summ
  • zhongqiudazhaxie2015.jpg
  • y2.jpg
  • y3.jpg
  • shiwutuangou.jpg
  • y1.jpg
  • benzhoucaidan.jpg
  • weixin.jpg
  • zhuce.gif
  • sidai.gif
  • 20120106kuang.jpg
  • shouyekuang.gif
  • hotline.gif
  • close.gif
  • stat.htm
  • core.php
  • 9.gif
  • pic.gif
  • h.js
  • app.gif
  • loading1.gif
  • bundle.js
  • hm.gif
  • client.js
  • iframeWidget.js
  • aj_relationship.php

Our browser made a total of 45 requests to load all elements on the main page. We found that 62% of them (28 requests) were addressed to the original, 7% (3 requests) were made to and 7% (3 requests) were made to The less responsive or slowest element that took the longest time to load (6.1 sec) belongs to the original domain

Additional info on


The browser has sent 42 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Incards. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and as a result speed up the page load time.











Possible request optimization













Normal result


As for redirects, our browser was forwarded to 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 3600
NS 3600
NS 3600

600 Mname:
Serial: 1
Refresh: 3600
Retry: 180
Expire: 1209600
Minimum-ttl: 180

Language and encoding

Normal 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 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.

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 Incards. 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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