There is no shortage of privacy related issues on the Internet. One of them I decided to tackle today is EXIF metadata embedded to the photos I publish here. I do not publish photos too often currently, but occasionally I do. Before today, I did not strip any EXIF metadata and this practice is considered to be a potential privacy issue too.
Getting the right tools
The starting point for me was in
zola#838
issue, mentioning exiftran and exiv2 tools. Lets pick them up:
$ pkgfile exiftran
community/fbida
$ pkgfile exiv2
extra/exiv2
$ sudo pacman -S --needed fbida exiv2
This should be sufficient, adapt for a different package manager if needed.
Implementing into a publishing pipeline
What I have come up with is this bash snippet:
files=$(git diff --cached --name-only | egrep -i "\.(jpe?g|png|gif)$")
echo "$files" | xargs -I % exiftran -i -a %
echo "$files" | xargs -I % exiv2 rm %
I know, it uses xargs on files. This is potentially dangerous, consider
taking a look at
possible safe usage of xargs
on files. Anyway, the danger is greatly mitigated by the fact that
xargs -I is only applied on files that end with common image extensions
and more importantly, only to such image files that were just added into
git index. Enjoy!