Firefox

For Firefox Starting with version 64, Firefox can optionally use XDG Desktop Portals to handle various desktop features, such as opening a file picker, or handling MIME types. — Arch Wiki | Firefox | XDG Desktop Portal integration Type about:config in Firefox address bar. Search widget.use-xdg-desktop-portal.file-picker, set it to 1. 0 – Never 1 – Always 2 – Auto (typically depends on whether Firefox is run from within Flatpak or whether the GDK_DEBUG=portals environment is set) Done....