Analyze NIO蔚来汽车官方网站


Page load speed analysis

  • 38/100

    Normal result
  • 4

    Successful tests
  • 4

    Failed tests
  • First response

    883 ms

  • Resources loaded

    55.2 sec

  • Page rendered

    358 ms

  • Total page load time

    56.4 sec

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We analyzed page load time and found that the first response time was 883 ms and then it took 55.6 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster. Unfortunately, there was 1 request timeout, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Page optimization

  • HTML 140.9 kB
    Images 1.1 MB
    Javascripts 876.0 kB
    CSS 146.5 kB

    In fact, the total size of main page is 2.3 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. 55% of websites need less resources to load. Images take 1.1 MB which makes up the majority of the site volume.

    • Original 140.9 kB
    • After minification 126.4 kB
    • After compression 38.5 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. 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 102.4 kB or 73% of the original size.

    • Original 1.1 MB
    • After optimization 1.0 MB

    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. Nio images are well optimized though.

    • Original 876.0 kB
    • After minification 875.1 kB
    • After compression 314.2 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 561.8 kB or 64% of the original size.

    • Original 146.5 kB
    • After minification 146.0 kB
    • After compression 25.8 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 120.7 kB or 82% of the original size.

Network requests diagram

  • global-min.css
  • index.js
  • seed-min.js
  • global-min.js
  • init-async-min.js
  • shopsystem.js
  • base-min.js
  • attribute-min.js
  • custom-min.js
  • base-min.js
  • event-min.js
  • base-min.js
  • base-min.js
  • touch-min.js
  • focusin-min.js
  • node-min.js
  • anim-min.js
  • base-min.js
  • promise-min.js
  • timer-min.js
  • transition-min.js
  • io-min.js
  • cookie-min.js
  • aplus_v2.js
  • aplus_v2.js
  • agp_heat.min.js
  • wp-beacon.js
  • 1.gif
  • ahot.1.9
  • s.gif
  • TB1ksX7HVXXXXcwXpXXzlnMKpXX-26-221.png
  • getipinfo
  • TB1_CjqIpXXXXbOXFXXuAZJYXXX-180-180.png
  • shopinfo-min.css
  • font_1451273740_187741.woff
  • T1OjDVXmNkXXbLHkr5-50-150.png
  • TB2RnDFjVXXXXXJXpXXXXXXXXXX_!!139236344.jpg
  • T18WsRFcpdXXXPXsT8-51-381.gif
  • black.png
  • T1dhMBFwteXXaHNz_X-16-16.gif
  • T1vEi4XnhyXXXm0Pva-454-340.png
  • T156jcXXhfXXcMeXnl-22-160.gif
  • uab.js
  • TB2MCGYmpXXXXXkXXXXXXXXXXXX_!!139236344.png
  • TB2E.ucmpXXXXcLXpXXXXXXXXXX_!!139236344.png
  • processUserCookie.htm
  • TB15UWFGVXXXXcwXFXXW7_A_FXX-113-21.png
  • T1cKm3XkRpXXXXXXXX-48-48.gif
  • cj.js
  • TB1d1T3LVXXXXaXaXXX7Ned6XXX-750-90.jpg
  • font_1433225452_0164654.woff
  • TB156oWHpXXXXXIapXX_cBKGXXX-32-48.png
  • TB14PwNIVXXXXbTXpXXqhF6.FXX-901-45.png
  • webww.js
  • index.js
  • TB2YhaUmpXXXXXFXXXXXXXXXXXX_!!139236344.jpg
  • vdata.htm
  • TB2Sj5rlXXXXXcuXXXXXXXXXXXX_!!139236344.jpg
  • TB2RhJ.lXXXXXb7XpXXXXXXXXXX_!!139236344.jpg
  • TB2OCm3cVXXXXayXpXXXXXXXXXX_!!139236344.jpg
  • TB2DckfipXXXXbPXpXXXXXXXXXX_!!139236344.jpg
  • TB1a_QDMXXXXXbjXpXXXXXXXXXX_!!0-item_pic.jpg_240x240.jpg
  • TB2eYuxlFXXXXcuXpXXXXXXXXXX_!!139236344.jpg_240x240.jpg
  • TB2abLrmXXXXXa3XpXXXXXXXXXX_!!139236344.jpg_240x240.jpg
  • TB1KzMHMXXXXXbxXpXXXXXXXXXX_!!0-item_pic.jpg_240x240.jpg
  • TB1doZPMXXXXXXbXFXXXXXXXXXX_!!0-item_pic.jpg_240x240.jpg
  • TB2VqKCmXXXXXa.XXXXXXXXXXXX_!!139236344.jpg_240x240.jpg
  • index.js
  • index.js
  • ww.69.2
  • TB1cut8FVXXXXafXXXXOcKP.FXX-130-60.gif
  • adapter.js
  • ww.69.2
  • jump
  • app.gif
  • translateelement.css
  • main.js
  • loading.gif
  • favicon.ico
  • element_main.js
  • translate_24dp.png
  • l
  • cleardot.gif

Our browser made a total of 110 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original, 46% (51 requests) were made to and 14% (15 requests) were made to The less responsive or slowest element that took the longest time to load (19.9 sec) relates to the external source

Additional info on


The browser has sent 99 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Nio. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 48 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.











Possible request optimization













Normal result


As for redirects, our browser reached this domain in four steps. The first redirect led to, then it was forwarded to, and afterwards it was sent to and a few other URLs (see the full list below) before we finally managed to reach this website. We strongly recommend that the redirects should be reduced, as the more redirects a site has, the slower it loads.

IP address uses IP addresses which are currently shared with 6 other domains. The more sites share the same stack of IP addresses, the higher the host server’s workload is. It is strongly recommended that the host server should be changed or the hosting provider should be requested to give a different (separate) IP address for this domain.

Normal result

IP Trace

DNS records

Type Host Target/ip TTL Other
A 57
A 57
A 57
A 57
NS 86400

Language and encoding

Poor result


ZH zh 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. 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 gbk. 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

Country of origin for 96.3% of all visits is China. It lies approximately 6910 miles away from the server location (United States) and such a long distance can negatively affect website speed, as it takes some time for data to travel back and forth between those places. That’s why one of the best ways to speed up page load time for the majority of users is moving the server to China or just closer to the user base.

Poor result

Poor result

Social Sharing Optimization

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