What is user agent

What is user agent and how user agent works

To understand what is user agent you will need to understand how the internet used to work in the early days. In the early days, there was no browser to access the Internet, users have to enter the commands for everything they wanted to do on the internet. Internet access became easy with the arrival of the browser because now you do not have to memorize every command to do anything on the Internet, you just have to write in the browser, the result is in front of you.

You can understand the user agent as software that works on behalf of a user, in simple language you can understand it as a bridge between you and the internet. The web browser is a user agent which retrieves, provide and make easier the interaction of users with Web content. Whether you sending emails, shopping online or searching something on the search engine your web browser is working as a user agent.

How does the user agent works

When you search something on your browser or open a website on it, your browser sends the information of what devices you are using, on what network your device is, version of your browser, plugins you are using, and operating system of your device. By these information, web developers customize the experience. It also retrieves the data that you request on the internet and recognizes itself as a user agent.

How to find user agent in chrome

  • To find the user agent of your browsers you will have to open your chrome browser.
  • Now write “about:” in the search bar of the browser and then press enter key.
  • You will see the user agent of your browsers.

Type of user agent

Apart from a web browser, there are other user agents that don’t need human to control. search engines are the best example of the automated user agent that trawls the web without any user. Here are the list of the user agent.

  1. Browsers like Internet Explorer, Safari, Chrome, Firefox, Opera, Opera Mini, QQ browser, Microsoft Edge etc.
  2. Offline browsers like Wget, Offline Explorer, WebCopy, NCollector Studio Lite etc.
  3. Crawlers like Yahoo! Slurp, Google Images, Google etc.
  4. Consoles like Wii, PlayStation 4, PlayStation Portable etc.
  5. Link checkers like W3C-checklink and many more.
  6. Legacy operating systems like AmigaVoyager.

How to Read a User Agent String

Let assume this is your user agent:

Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.111 Safari/537.36

  • The user agent application is Mozilla version 5.0
  • The operating system is windows 6.1
  • The client is based on Safari version 537.36
  • The engine responsible for displaying content on this device is AppleWebKit version 537.36

Latest Google Chrome User Agents

  • Chrome for Android (mobile & tablet)
    Mozilla/5.0 (Linux; ; ) AppleWebKit/ (KHTML, like Gecko) Chrome/ Mobile Safari/
  • Chrome WebView (KitKat to Lollipop)
    Mozilla/5.0 (Linux; Android 4.4; Nexus 5 Build/_BuildID_) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/30.0.0.0 Mobile Safari/537.36
  • Chrome for iOS
    Mozilla/5.0 (iPhone; CPU iPhone OS 10_3 like Mac OS X) AppleWebKit/602.1.50 (KHTML, like Gecko) CriOS/56.0.2924.75 Mobile/14E5239e Safari/602.1
  • Chrome WebView (Lollipop and above)
    Mozilla/5.0 (Linux; Android 5.1.1; Nexus 5 Build/LMY48B; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/43.0.2357.65 Mobile Safari/537.36