Sushifiend

That would absolutely get my vote!

It was such a versatile and ubiquitous format in its day and that's why I think it deserves to be readable by the Affinity suite - I don't know how much work it would take since the code to read the files is open source (linked in my OP) but anyway I won't hold my breath. Anyway my immediate needs are met by GIMP, XnView and ImageMagick (the latter two I only learned of today) so many thanks everyone! Alex

ImageMagick - another tool I hadn't heard of. I'm actually a UNIX and Linux engineer by trade so completely at home with command line tools. As for GraphicConverter, I prefer not to pay for Mac-only software as it's my least-used platform but great to know what exists. Many thanks for the suggestion!

Thanks very much Walt for this suggestion. I wasn't aware of XnViewMP and I have downloaded it and it works better than expected. I'm sure it'll come in handy, not only for Amiga files but also for my entire photo library which I've been looking for a way to manage in place of Lightroom tags. It looks like this tool has categories which may fit the bill in terms of organisation and best of all it works on all three platforms I use regularly. I do also wish that Serif would come out with a Lightroom alternative - hopefully that's in the works!

As time goes on it's becoming harder to open these image files generated on the Amiga platform. I know Photoshop can (or at least it used to be able to) open these files and there is a freeware plugin for GIMP which allows opening of these files. See: https://blitterstudio.com/gimp-iff-plugin/ https://github.com/unwind/gimpilbm It would be really nice to be able to open these files natively in the Affinity suite. I realise that it's a bit of a corner case, but the Amiga was huge in graphics in the 1980s and 1990s and it would be awful if the ability to open these files was lost in time. Right now I'm using GIMP to open the files and resave them in more modern formats as appropriate. Thanks!