Pulltab Fullscreen - hide taskbar автор Justnotthisway

this addon will give you a pulltab on the right side of your screen, it will put any website into fullscreen aka hide the address-bar. this will save space on mobile devices and also make the user experience of most websites more similar to their standalone apps.

known issues (be aware):
1. youtube.com turns into landscape mode when fullscreen is activated, even when no video is playing.