UA Switcher is a Chrome extension designed to facilitate seamless switching between different user agents. With its modern and user-friendly interface, users can easily select from a wide range of desktop and mobile user agents, including popular AI crawlers. The extension automatically reloads the page upon switching, ensuring that users can quickly see the effects of their changes. It also supports dark mode, catering to users' visual preferences.

The extension offers advanced features such as the ability to save custom user agents and mark favorites for quick access. Users can manage their preferences and settings through an intuitive interface. The extension is built on Chrome's declarativeNetRequest API, ensuring efficient performance and effective header modification. Overall, UA Switcher enhances browsing flexibility and allows users to test how websites respond to various user agents.