Gnome 47 Wallpapers
blog.jimmac.eu
blog.jimmac.eu
Windows and macOS users, notice that they're in JXL format. You'll need a converter to use them as wallpapers on your machine.
I'm not sure if this changed with Sonoma, but i'm using the lcd-rainbow-d.jxl as my wallpaper right now. It still weirdly cannot be opened with Preview, but it can definitely be set as a wallpaper!
EDIT: Managed to save it and Finder preview (space) worked just fine :)