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<p>It is impossible to reliably find and remove all metadata in complex file
formats. For example, <i>Microsoft Office</i> documents can contain embedded images,
audio, and other files containing their own metadata that Tails cannot
remove.</p>
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Removing metadata from the command line
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*Metadata Cleaner* is a graphical interface for
[*mat2*](https://0xacab.org/jvoisin/mat2).
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You can also use *mat2* directly on the command line:
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Open a *Terminal*.
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Execute the following command.
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Replace <span class="command-placeholder">file.ext</span> with a path to the
file that you want to clean.
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<p class="command-template">mat2 <span class="command-placeholder">file.ext</span></p>
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After *mat2* finishes, a copy of your file without metadata is available as <span class="command-placeholder">file.cleaned.ext</span>.
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