User-Agent Switcher is a free Chrome extension developed by Nicholas Jensen. This add-on falls under the category of Browsers and specifically the subcategory of Add-ons & Tools.

The main purpose of User-Agent Switcher is to allow users to quickly and easily switch between user-agent strings. This is particularly useful for developers who need to test their websites on different browsers and devices. With this extension, users can choose between Windows, Mac, Linux, and Android user-agent strings.

One of the key features of User-Agent Switcher is the ability to save user-agent choices for easy activation. This means that users can set up specific URLs that they want to spoof every time they visit them.

It is important to note that while User-Agent Switcher allows users to mimic user-agent strings, it does not provide improved privacy while browsing the internet. Additionally, some websites may have other means to detect that the browser is not what it claims to be. It is also worth mentioning that running this extension may have a performance impact on the browsing experience due to the need to intercept and modify data communicated to the server.