Hyprpaper is a blazing fast wallpaper utility for Hyprland with the ability to dynamically change wallpapers through sockets. It will work on all wlroots-based compositors, though.
Preload will tell Hyprland to load a particular image (supported formats: png, jpg, jpeg). Wallpaper will apply the wallpaper to the selected output (`monitor` is the monitor's name, easily can be retrieved with `hyprctl monitors`)
If you use a lot of wallpapers, consider unloading those that you no longer need. This will mean you need to load them again if you wish to use them for a second time, but will free the memory used by the preloaded bitmap. (Usually 8 - 20MB, depending on the resolution)
You can issue a `hyprctl hyprpaper unload [PATH]` to do that.
For other compositors, the socket works like socket1 of Hyprland, and is located in `/tmp/hypr/.hyprpaper.sock` (this path only when Hyprland is not running!)