Unmultiply - Remove black/white - for Affinity Photo

Macros for Affinity Photo to remove the black/white background, known as "Unmultiply".

You can do almost the same thing by the "Erase White Paper" filter in Affinity Photo.

With these macros, There is No color change, No black/white fringe, No detail missing.

More info:
https://orbit.style/unmultiply

*No resale, no redistribution