Why not save that screen background as wallpaper?

Because it is a live webcam view that scrolls horizontally and updates every 10 minutes.

Maybe play a video file in a picture in picture window that will always be on top. If you resize this PiP window to fill the screen then this should work.

I don't want it to be _on top_, I want it to be _behind everything_.

You might be better off asking your question here, https://support.microsoft.com

http://answers.microsoft.com/en-US/windows/forum/windows_10

Of course, I can code a tool that will permanently push a Firefox window into the background, but I won't if there's an option for that already or an add-on. That's why I'm asking here.

Maybe try a virtual desktop.

• https://www.howtogeek.com/195962/unlock-virtual-desktops-on-windows-7-or-8-with-this-microsoft-tool/
• https://community.spiceworks.com/how_to/121304-how-to-get-multiple-desktops-on-windows-7-8-8-1

firefox507 said

an option for that already or an add-on.

Hello firefox507,

FWIW; someone filed a bug report about this 5 years ago :

https://bugzilla.mozilla.org/show_bug.cgi?id=1090868

There is an add-on that has (among other things) hundreds of live wallpapers :

https://addons.mozilla.org/en-US/firefox/addon/live-start-page-lst/

You could contact the developer(s) to ask if /how you can add the live wallpaper of your choice :

https://livestartpage.com/contact