I think Imagepipe can do this too and has some nice features like reduce the image size.

Just downloaded it and gave it a try. It works as advertised!

Image toolbox from fdroid can do this also more cool stuffs, give it a try :)

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Scrambled Exif (Remove the metadata from your pictures before sharing them) https://f-droid.org/packages/com.jarsilio.android.scrambledeggsif/