@KelsonV for Android, have a look at #ImagePipe. In the settings you can set which EXIF tags you want to keep. It's on F-Droid.
@FiXato Wow, that looks really flexible! But it looks like it *always* resamples the image, even if you only want to edit the metadata? Not that it's a big deal if you're uploading to, say, Pixelfed or something that's going to resize it anyway.
@KelsonV
not sure actually. Alternatively I could probably script something for Termux to use exiftool.
I mostly use it to resize my 108MP photos from my phone, as Discord doesn't want to display previews of those.
@FiXato Yeah, that seems like it would be a bit much for Discord!