Pin Unpin Tab is a Firefox WebExtension designed to enhance tab management by allowing users to pin or unpin tabs using customized methods. This extension offers an alternative to the traditional double-click functionality that is no longer supported due to WebExtensions technology limitations. Users can easily pin or unpin tabs by performing a long left-click anywhere on the webpage, which can be enabled or disabled in the preferences. Additionally, the duration for holding down the click can be customized, providing flexibility in usage.

The extension also supports keyboard shortcuts, with Alt-P as the default for pinning tabs, and Ctrl-Shift-P for macOS users. These shortcuts can be further customized to fit individual preferences. For added convenience, users can also pin or unpin tabs by clicking the pin icon located on the browser toolbar, which is visually compatible with both light and dark themes. Overall, Pin Unpin Tab streamlines the tab management experience for Firefox users.