Request to accept TIFF as a supported file type in Firefly

that would be an incorrect assumption.

Destructively throwing away image data is destructive, even if not perceptible at screen size. Folding a piece of paper in half is less destructive than crumpling it into a ball, but there is still a fold and that sheet has been altered.

Also, subsequent saves to JPEG re-compress the image, creating even more artifacts.

If Firefly is meant to be a fun toy to play around with AI and make fun graphics for, say, Instagram, that's fine. But if it's meant for professional-level, high-resolution images, it should support high-quality image formats.

FWIW, there are other threads in this forum asking for the retention of metadata. Saving from TIFF down to JPEG would lose much of that data.

It's a good idea; however, I assume that the loss incurred by the single save command from tif to jpg isn't going to be significant enough to affect the AI image.