Bonjour,
in Numista › Documentation center › Numista Catalogue -- “How can I add a photo to the catalogue?”
which is an Automatically translated • See original article
cropping=remove background is not cropping=cliping cutout
The sample images show the results very well 🤥
The only thing missing is the limits of the images
refer instead to
Numista › Documentation center › Numista Catalogue › Guidelines for the Numista catalogue › Add or modify a coin in the catalogue