Questions and postings pertaining to the usage of ImageMagick regardless of the interface. This includes the command-line utilities, as well as the C and C++ APIs. Usage questions are like "How do I use ImageMagick to create drop shadows?".
What is your ImageMagick version? Current version can read HEIF and convert to JPG, but you need to install libheif. See https://github.com/strukturag/libheif