Hi @Rene Slijkhuis, would it be possible to update your excellent WIC plugin to wrap/support this HEIC WIC codec: https://www.copytrans.net/copytransheic/ It is free for personal use and at the moment, it seems to be the only freeware HEIC codec for Windows 7/8.1. However it does not work with Paint.net 4.2.
I asked Rick Brewster why and he was kind enough to give an explanation. "Every WIC codec has its own rules and bugs and invisible walls that have to be found through testing. Docs no help. For instance, handling metadata looks uniform but has completely different rules and bugs for JPEG, TIFF, HEIC, etc. Strategy for loading and preserving JPEG metadata doesn't work on HEIC. Slightly different code is needed. You'd have to create a Paint.NET plugin that specifically wraps the CopyTrans codec."
Oh by the way, this message is not a spam link. Earlier, I was banned by some moderator for no reason for posting this harmless ACTUALLY RELATED link to this WIC decoder PDN plugin (it's WIC codec, duh!), and had to request Mr. Rick Brewster to unban me.