Imagemagicks in Tumbleweed seems to have been built with support for .heic files, and libheif version 1.10.0-3.1 is installed, but I am unable to read or convert any files of this type:
[FONT=arial]GIMP 2.10.22 and Krita also show errors when I try to open a .heic file. Only showFoto works. I can reproduce this issue with .heic files from an iPhone X and from https://github.com/tigranbs/test-heic-images
Thank you so much! That did the trick. Although I still don’t understand why a non-functional version of libheif is packaged in the standard repositories…
gimp-plugin-heif - Plugin for GIMP to load HEIF files
This is a GIMP plugin for loading and saving HEIF images (High Efficiency Image File Format). HEIF is a new image file format employing HEVC (h.265) image coding for the best compression ratios currently possible.