Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!
Installation on Ubuntu
wajig install heif-gdk-pixbuf libheif-examples
Usage
heif-convert input.HEIC output.jpg
Batch Convert Using IPython / JupyterLab
If you have multiple HIEC images and you want to convert all of them to JPG images, then you use the following code in IPython or a JupyterLab notebook.
for p in Path().glob("*.HEIC"):
!heif-convert {p} {p.with_suffix(".jpg")}