Fedora is going to be a problem, those solutions are really debian based, although no reason why there should not be heic-enc / heic-convert as a rpm package (somewhere) for fedora
edit: might already be on your computer with libheif https://fedora.pkgs.org/34/rpmfusion-fre...4.rpm.html
Back to a Gimp based script, there is a heic-open/heic-save in the pdb. Ofnuts is the best to advise on that.
or BIMP for fedora https://www.reddit.com/r/Fedora/comments...ipulation/ (old post)
edit: might already be on your computer with libheif https://fedora.pkgs.org/34/rpmfusion-fre...4.rpm.html
Back to a Gimp based script, there is a heic-open/heic-save in the pdb. Ofnuts is the best to advise on that.
or BIMP for fedora https://www.reddit.com/r/Fedora/comments...ipulation/ (old post)