100 lines
2.8 KiB
Groff
100 lines
2.8 KiB
Groff
.TH mat2 "1" "August 2023" "mat2 0.13.4" "User Commands"
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.SH NAME
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mat2 \- the metadata anonymisation toolkit 2
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.SH SYNOPSIS
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\fBmat2\fR [\-h] [\-v] [\-l] [\-V] [-s | -L] [\fIfiles\fR [\fIfiles ...\fR]]
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.SH DESCRIPTION
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.B mat2
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removes metadata from various fileformats. It supports a wide variety of file
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formats, audio, office, images, …
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Careful, mat2 does not clean files in-place, instead, it will produce a file with the word
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"cleaned" between the filename and its extension, for example "filename.cleaned.png"
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for a file named "filename.png".
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.SH OPTIONS
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.SS "positional arguments:"
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.TP
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\fBfiles\fR
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the files to process
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.SS "optional arguments:"
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.TP
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\fB\-h\fR, \fB\-\-help\fR
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show this help message and exit
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.TP
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\fB\-v\fR, \fB\-\-version\fR
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show program's version number and exit
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.TP
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\fB\-l\fR, \fB\-\-list\fR
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list all supported fileformats
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.TP
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\fB\-\-check\-dependencies\fR
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check if mat2 has all the dependencies it needs
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.TP
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\fB\-V\fR, \fB\-\-verbose\fR
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show more verbose status information
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.TP
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\fB\-\-unknown-members\fR \fIpolicy\fR
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how to handle unknown members of archive-style files (policy should be one of: abort, omit, keep)
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.TP
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\fB\-s\fR, \fB\-\-show\fR
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list harmful metadata detectable by mat2 without removing them
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.TP
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\fB\-L\fR, \fB\-\-lightweight\fR
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remove SOME metadata
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.TP
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\fB\--no-sandbox\fR
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disable bubblewrap's sandboxing
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.TP
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\fB\--inplace\fR
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clean in place, without backup
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.SH EXAMPLES
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To remove all the metadata from a PDF file:
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.PP
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.nf
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.RS
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mat2 ./myfile.pdf
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.RE
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.fi
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.PP
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.SH NOTES ABOUT METADATA
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While mat2 is doing its very best to display metadata when the --show flag is
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passed, it doesn't mean that a file is clean from any metadata if mat2 doesn't
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show any. There is no reliable way to detect every single possible metadata for
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complex file formats.
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.PP
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This is why you shouldn't rely on metadata's presence to decide if your file must
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be cleaned or not.
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.PP
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Moreover, mat2 goes to great lengths to make sure that as much metadata as
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possible are removed. This might sometimes result in a loss of quality of the
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processed files. For example, textual based pdf file converted into image based
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one means that it'll be no longer possible to select text in them. If you're
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experiencing this, you might want to give the lightweight cleaning mode a try,
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but keep in mind by doing so, some metadata \fBwon't be cleaned\fR.
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.SH BUGS
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While mat2 does its very best to remove every single metadata,
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it's still in beta, and \fBsome\fR might remain. Should you encounter
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some issues, check the bugtracker: https://0xacab.org/jvoisin/mat2/issues
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.PP
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Please use accordingly and be careful.
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.SH AUTHOR
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This software was made by Julien (jvoisin) Voisin with the support of the Tails project.
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.SH COPYRIGHT
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This software is released on LGPLv3.
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.SH "SEE ALSO"
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.BR exiftool (1p)
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.BR pdf-redact-tools (1)
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