Custom Tab Title and Favicon is a Firefox web extension designed to personalize the browser experience by allowing users to modify the title and favicon of any open tab. This is accomplished through the application of regular expressions to the URL or title of the tab, enabling a high level of customization. Users can also incorporate dynamic elements such as dates or hostnames into their custom titles, making it a versatile tool for organizing tabs effectively.

Accessing the settings is straightforward, as it can be done via the sidebar, toolbar, or the extension's preferences page. The extension supports sync functionality, which allows users to store their custom settings in a synced storage space and share them across all their Firefox instances. Custom Tab Title and Favicon is distributed under the Mozilla Public License Version 2.0, ensuring a compliant and secure user experience.