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"description": "```\n _____ _____ _____ ___\n| | _ |_ _|_ | Keep your data,\n| | | | | | | | _| trash your meta!\n|_|_|_|__|__| |_| |___|\n\n```\n\nThis software is currently in **beta**, please don't use it for anything\ncritical.\n\n# Metadata and privacy\n\nMetadata consist of information that characterizes data.\nMetadata are used to provide documentation for data products.\nIn essence, metadata answer who, what, when, where, why, and how about\nevery facet of the data that are being documented.\n\nMetadata within a file can tell a lot about you.\nCameras record data about when a picture was taken and what\ncamera was used. Office documents like PDF or Office automatically adds\nauthor and company information to documents and spreadsheets.\nMaybe you don't want to disclose those information on the web.\n\nThis is precisely the job of MAT2: getting rid, as much as possible, of\nmetadata.\n\n# Requirements\n\n- `python3-mutagen` for audio support\n- `python3-gi-cairo` and `gir1.2-poppler-0.18` for PDF support\n- `gir1.2-gdkpixbuf-2.0` for images support\n- `FFmpeg`, optionally, for video support\n- `libimage-exiftool-perl` for everything else\n- `bubblewrap`, optionally, for sandboxing\n\nPlease note that MAT2 requires at least Python3.5, meaning that it\ndoesn't run on [Debian Jessie](https://packages.debian.org/jessie/python3).\n\n# Running the test suite\n\n```bash\n$ python3 -m unittest discover -v\n```\n\nAnd if you want to see the coverage:\n\n```bash\n$ python3-coverage run --branch -m unittest discover -s tests/\n$ python3-coverage report --include -m --include /libmat2/*'\n```\n\n# How to use MAT2\n\n```bash\nusage: mat2 [-h] [-v] [-l] [--check-dependencies] [-V]\n [--unknown-members policy] [-s | -L]\n [files [files ...]]\n\nMetadata anonymisation toolkit 2\n\npositional arguments:\n files the files to process\n\noptional arguments:\n -h, --help show this help message and exit\n -v, --version show program's version number and exit\n -l, --list list all supported fileformats\n --check-dependencies check if MAT2 has all the dependencies it needs\n -V, --verbose show more verbose status information\n --unknown-members policy\n how to handle unknown members of archive-style files\n (policy should be one of: abort, omit, keep) [Default:\n abort]\n -s, --show list harmful metadata detectable by MAT2 without\n removing them\n -L, --lightweight remove SOME metadata\n```\n\nNote that MAT2 **will not** clean files in-place, but will produce, for\nexample, with a file named \"myfile.png\" a cleaned version named\n\"myfile.cleaned.png\".\n\n# Notes about detecting metadata\n\nWhile MAT2 is doing its very best to display metadata when the `--show` flag is\npassed, it doesn't mean that a file is clean from any metadata if MAT2 doesn't\nshow any. There is no reliable way to detect every single possible metadata for\ncomplex file formats.\n\nThis is why you shouldn't rely on metadata's presence to decide if your file must\nbe cleaned or not.\n\n# Notes about the lightweight mode\n\nBy default, mat2 might alter a bit the data of your files, in order to remove\nas much metadata as possible. For example, texts in PDF might not be selectable anymore,\ncompressed images might get compressed again, \u2026\nSince some users might be willing to trade some metadata's presence in exchange\nof the guarantee that mat2 won't modify the data of their files, there is the\n`-L` flag that precisely does that.\n\n# Related software\n\n- The first iteration of [MAT](https://mat.boum.org)\n- [Exiftool](https://sno.phy.queensu.ca/~phil/exiftool/mat)\n- [pdf-redact-tools](https://github.com/firstlookmedia/pdf-redact-tools), that\n\ttries to deal with *printer dots* too.\n- [pdfparanoia](https://github.com/kanzure/pdfparanoia), that removes\n\twatermarks from PDF.\n- [Scrambled Exif](https://f-droid.org/packages/com.jarsilio.android.scrambledeggsif/),\n\tan open-source Android application to remove metadata from pictures.\n\n# Contact\n\nIf possible, use the [issues system](https://0xacab.org/jvoisin/mat2/issues)\nor the [mailing list](https://mailman.boum.org/listinfo/mat-dev)\nShould a more private contact be needed (eg. for reporting security issues),\nyou can email Julien (jvoisin) Voisin at `julien.voisin+mat2@dustri.org`,\nusing the gpg key `9FCDEE9E1A381F311EA62A7404D041E8171901CC`.\n\n# License\n\nThis program is free software: you can redistribute it and/or modify\nit under the terms of the GNU Lesser General Public License as published by\nthe Free Software Foundation, either version 3 of the License, or\n(at your option) any later version.\n\nThis program is distributed in the hope that it will be useful,\nbut WITHOUT ANY WARRANTY; without even the implied warranty of\nMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\nGNU General Public License for more details.\n\nYou should have received a copy of the GNU Lesser General Public License\nalong with this program. If not, see .\n\nCopyright 2018 Julien (jvoisin) Voisin \nCopyright 2016 Marie Rose for MAT2's logo\n\n# Thanks\n\nMAT2 wouldn't exist without:\n\n- the [Google Summer of Code](https://summerofcode.withgoogle.com/);\n- the fine people from [Tails]( https://tails.boum.org);\n- friends\n\nMany thanks to them!\n\n\n\n",
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