[Feature request]: Add the ability to NOT remove EXIF metadata

[nicolas-raoul]

There are many situations where one wants to blur faces but not remove EXIF metadata:

• Passer-by on a picture meant to upload to Wikipedia. Wikimedia Commons needs to know with what kind of camera the picture was taken, and other pieces of metadata.
• People in the background of a picture that I want to post to social media or to a family's Google Photos. The picture's exact time and location is important so that it appears at the correct time in the timeline, and at the correct place on the pictures map. Metadata helps services group pictures in a smart way, it is weird that among 50 pictures only the picture where I blurred a passer-by's face is split as a different group.

I know you want to keep the UI simple, but thanks a lot for your consideration! :-)

[tkuenneth]

Thanks for reporting this. We might add an option to let the user decide.

[nicolas-raoul]

This will require a rather deep modification, as the file is currently written from scratch using just the pixels raw data:

encodeJpg(Image.fromBytes(width, height, raw)) https://github.com/MATHEMA-GmbH/privacyblur/blob/main/lib/src/screens/image/utils/image_tools.dart#L72