I'm pretty sure I have the Windows kinks worked out. For those who use my custom-built Qt6.10.2 for building Sigil on Windows, you'll need to download it again to get the support for avif and jxl.
https://github.com/dougmassay/win-qt...s/tag/v5.212-1
I changed the name slightly (so I don't get confused about what is what). On that release page, the archive you want is named Qt6.10.2ci_x64_VS2026a.7z
Yes... I just added an 'a' to it.
Pull the latest changes from Sigil's github repo to make sure your Sigil builds will incorporate the new plugins.
I'm working on getting the Linux AppImage up to speed as we speak.