User-Agent Header Manager — Browser Extension
A browser extension for managing User-Agent values and other HTTP headers globally or for individual websites.
User-Agent Header Manager is a browser extension for changing User-Agent values and other HTTP request headers.
Headers can be configured globally or overridden for individual websites. The extension includes common User-Agent presets, custom header management, blacklist and whitelist modes, and settings import and export.
All configuration is stored locally in the browser, with no external service or backend required. The project includes a compact toolbar popup for quick changes and a separate settings interface for managing more detailed rules.
I developed the complete extension, including request interception, configuration storage, site-matching logic, and the popup and settings interfaces.