userChrome.css
#tabbrowser-tabs {
visibility: collapse;
}userContent.css
@-moz-document url("about:home"), url("about:newtab") {
html,body { background: #333 !important; }
}Disable HTML5 autoplay
about:config- search: media*play
- media.autoplay.enabled -> false
Disable Pocket
- extensions.pocket.enabled -> false
Fix Popup 'choose an application to open the localhost link'
- widget.use-xdg-desktop-portal.mime-handler -> 0
WebRTC exposes LAN IP address, breaks peer-to-peer websites (e.g. peertube)
- media.peerconnection.enabled -> false