A command line wrapper for Xdelta specialized for applying and creating xdelta pathces for Super Smash Bros Drop a z64 or xdelta onto it and will output the opposite format with the same filename in the same folder with a simple registry tweak it can be called from the windows right click context menu
Make sure rompath.ini points to a valid SSB rom or else the defailt location "C:\GEEdit4\Super Smash Bros. (USA).z64" will be assumed
In Windows 11 the right click context menu takes an extra click to get to any of the useful options directions here to restore the old right click menu https://answers.microsoft.com/en-us/windows/forum/all/restore-old-right-click-context-menu-in-windows-11/a62e797c-eaf3-411b-aeec-e460e6e5a82a