Re: [gentoo-user] {OT} image metadata and privacy

[Grant <emailgrant@gmail.com>]

> Yes, I just had to do this myself.
>
> There are two packages: jhead and exiftool. The former does jpegs only.
> I wound up using exiftool, there's a single command to strip all metadata:
>
> exiftool -all= *.jpg
>
> If I remember right that creates a copy of the file it processes.
>
> You can use exiftool to list tags and also remove individual tags. I
> used it to make sure there were no GPS tags in pictures from my phone.

I thought I had some problems getting exiftool to work with a PNG file
but now I realize I didn't understand how to use it.  I think that
should be the de facto method for removing EXIF data from many
different image formats.

- Grant


>> Has anyone found a way to completely sanitize images of all
>> potentially privacy-invading metadata for posting online?  I recently
>> discovered that there is actually an EXIF thumbnail image.  So if you
>> have a photo and you crop it and post it online, the EXIF thumbnail of
>> the original uncropped image is still there for all to see.
>>
>> - Grant