Unmodified heic-to 1.6.6, LGPL-3.0-or-later. Source and build instructions: source.zip; upstream https://github.com/hoppergee/heic-to . The decoder is a separate dynamically imported module. Bundled libheif upstream: https://github.com/strukturag/libheif and https://github.com/catdad-experiments/libheif-js .