There are much things done by a web browser — including Chrome — to have a communication with web servers. The very first thing done by a web browser is introducing itself to a web server it connects to via user agent. User agent itself is editable. For instance, if you are using Chrome running on Windows 10, you can change its user agent to tell web servers as if you are using Firefox running on Android.
Changing user agent itself can be done in certain situations. For instance, you are browsing the web using Chrome running on Windows 10 and have a very bad internet connection so you want web server of the site you are visiting to serve mobile-specialized web pages. On this case, you can change the user agent of your browser to tell web server as if you are using Firefox running on Android, for instance.
Or, you might want to upload a new photo to Instagram from Firefox. You can also do so by changing the user agent. In Google Chrome itself, you don’t need to install any extension to change the user agent.
Changing user agent in Chrome
To change user agent in Chrome, click the Chrome menu (three-dot icon on the top-right corner) and select More tools -> Developers tools. Or you can simply press Ctrl+Shift+I buttons. As the developer tools window pops up, select the Network tab and click the menu within the pop-up (three-dot icon on the top-right corner) and select More tools -> Network conditions.
Scroll down your mouse to the User agent section and uncheck the Select automatically option. You will see a drop-down menu containing several user agents you can opt to. Simpy select one and reload the current page.