User-Agent Switcher is a free browser add-on for Chrome developed by chYer. It allows users to easily change their browser's user agent from the toolbar popup. With 26 popular user-agent strings to choose from, users can switch between different user-agent profiles with just a few clicks.

To use this add-on, simply open the toolbar popup and click on the desired user-agent button. The top row of the toolbar popup is dedicated to mobile user agents, the second row is for desktop user agents, and the last row is for selecting operating systems. Once a user agent is selected, users can conveniently reload all tabs to apply the changes.

User-Agent Switcher offers a simple and intuitive way to test websites or access content that may be restricted based on user-agent detection. Whether you need to switch to a mobile user agent, impersonate a different browser, or simulate a specific operating system, this add-on provides the flexibility to do so seamlessly.