Where is Wallpaper stored?

Thanks Shawn. All that did was show the background file that was in Firefox. It didn't show any others (??)
I still have it installed, I didn't remove it yet.

However, it helped me find it. The Firefox location was in Roaming. I looked at others in Roaming and found it under Internet Explorer. I had looked at Roaming before but didn't look at the Internet Explorer as I use Edge.

Jack

Here's where my personal wallpaper images are stored on my Win10 machine:

C:\Users\<username>\AppData\Local\Microsoft\Windows\Themes\RoamedThemeFiles\DesktopBackground

Hope this helps, if you haven't already found out the answer elsewhere.

JRoads said:

Here's where my personal wallpaper images are stored on my Win10 machine:

C:\Users\<username>\AppData\Local\Microsoft\Windows\Themes\RoamedThemeFiles\DesktopBackground

Hope this helps, if you haven't already found out the answer elsewhere.

Got close. I found one there and deleted it directly and it disappeared from the Pictures Win10 offered to recall, but not all of them.
Some other old pictures are still showing as tiny examples in Settings for Background, but the files themselves are nowhere to be found.
They're not in ~Windows ~web folders either.
One I've just added and used isn't there, either.
Maybe they've had their extensions lopped off somewhere, as the Lockscreen images have had in
c:\Users\[uname]\AppData\Local\Packages\Microsoft.Windows.ContentDeliveryManager_cw5n1h2txyewy\LocalState\Assets\

The hunt continues.

It may be worth continuing with this thread although the location of wallpaper updates may be common knowledge by now.

In this folder (change [uname] to yours)
c:\Users\[uname]\AppData\Local\Packages\Microsoft.Windows.ContentDeliveryManager_cw5n1h2txyewy\LocalState\Assets\
there are files with names like:
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These are the graphics files.
I order them by size, with two windows/panels like Total Commander's I copy the largest across to an empty folder. Then with TC's Multi Rename Tool (^M) I take say 16 characters ([N1-16]) and add a jpg extension.
Then they're quite viewable.
HTH