There is a great tool for scrubbing metadata from files from the tor/tails project that is not in the guide: mat: https://mat.boum.org/ https://mat.boum.org/

There is a great tool for scrubbing metadata from files from the tor/tails project that is not in the guide: mat: https://mat.boum.org/ https://mat.boum.org/ It also has a list metadata option which is handy enough to warrant the apt-get invocation.