Krita and Gimp can open and edit/export *.HEIC images.
Didn’t spend much time with such format, but i came across, and i have no idea for a viewer but someone might guide you in the right direction at some point.
Thanks for the suggestions, i know for Gimp, but i am looking for photo management / viewer.
I will see for Digikam…it’s seem it’s working with Heic, and importing Iphone’s photos. ps. install a lot of dependency
I tried both Xviewer and koko but none of them works. In fact koko does not show anything except a pitch black image and Xviewer shows a blurry black-and-white image. However, I can view it perfectly in gimp.
[Unfortunately, Manjaro made me TL1 after their server wipe and so I couldn’t post a screenshot of how it looks on Xviewer vs gimp Thanks Manjaro.]