It could still be identifiable, for example if the document has been prepared such that the intended recipient's identity is encoded into subtle modulation of the widths of spaces.

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yyyk a day ago | parent | next [-]

That's outside this threat model? The idea here is trying to foil outside analysis, not limit the document authors (which are allowed to add/update and even write openly 'the intended recipient's identity').

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sincerely a day ago | parent | prev | next [-]

Print and re-scan wouldn’t fix that though.

	▲	jeffbee a day ago \| parent [-]
		That was my point. If you want to erase its origin you need to semantically extract the contents and reduce them to their most basic representation.

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tester756 a day ago | parent | prev | next [-]

Sure, but all those not-essential information hidden in PDFs format are removed

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idiotsecant 20 hours ago | parent | prev [-]

In PDF file format?