Pulltab Fullscreen is a Firefox add-on designed to enhance the user experience by providing a convenient pulltab feature. This tool allows users to put any website into fullscreen mode, effectively hiding the address bar and maximizing screen space on mobile devices. This functionality mimics the experience of using standalone applications, making web browsing more efficient and enjoyable.

The add-on includes several user-friendly features such as a pulltab that remains on top of the website, enabling easy access to fullscreen mode and taskbar hiding. Users can long-press the pulltab to reposition it and access a context menu, which offers options for alignment and closing the tab. With its simple interface and practical utility, Pulltab Fullscreen is a valuable addition for Firefox users seeking a more streamlined browsing experience.