16 May
2020
16 May
'20
11:48 p.m.
On Tue, 12 May 2020 16:32:01 +1200, I wrote:
The exiv2 tool (from the package of the same name) can directly alter EXIF metadata in a file without decoding/reencoding pixels.
However, PNG files can have additional non-EXIF metadata, in the form of various kinds of “text” information records, and exiv2 will not recognize these. On the other hand, exiftool (part of the libimage-exiftool-perl) package, can process them. The command exiftool -all= «file» will strip all metadata from «file», backing up the unchanged original as «file»_original.