What are metadata?
Metadata consists of information that characterizes your file. They answer background questions about who, how, when, and what. This gives your file multi-faceted documentation. https://0xacab.org/jvoisin/mat2/blob/master/README.md (09.2019)
The metadata of your file leak a lot of information about you. For example, cameras store file information about the time of a shot and which camera was used for it. Documents, such as PDF or Words, automatically add author or company information to the document. You don't want to publish all this information at all?
This is precisely the job of MAT2: getting rid, as much as possible, of metadata.
Please note that while we do not keep a copy of your file, there is no way that you could be certain about this: Act accordingly. Due to this warning, please consider running MAT2 locally on your device.
MAT2 is available in pip
pip3 install mat2
MAT2 on Debian
MAT2 is available on Debian.
sudo apt install mat2
More info: https://packages.debian.org/sid/mat2