You can see for yourself using exiftool.
To remove all of the top-level metadata, you can use exiftool and qpdf:
exiftool -all:all= <path.pdf> -o <output1.pdf>
qpdf --linearize <output1.pdf> <output2.pdf>
To remove *all* metadata, you can use dangerzone or mat2
jonny /
npub1qw…p3kdr
2022-01-26 00:03:30
in reply to nevent1q…ujrm
Author Public Key
npub1qwxhj53fqylj0exmwadaxx6wu0cmt5ak3nmjv0g3k0jhznem2gksgp3kdrPublished at
2022-01-26 00:03:30Event JSON
{
"id": "98f02dcd6b18daddc8d0af571fbb8e9f164cb84cb419d42db1667719e8b23b2c",
"pubkey": "038d795229013f27e4db775bd31b4ee3f1b5d3b68cf7263d11b3e5714f3b522d",
"created_at": 1643155410,
"kind": 1,
"tags": [
[
"e",
"3692379a0f1c70c165e112cb0fb61910f0006126381fe1caaa6d616a03fb031f",
"wss://relay.mostr.pub",
"reply"
],
[
"proxy",
"https://social.coop/users/jonny/statuses/107685833015019185",
"activitypub"
]
],
"content": "You can see for yourself using exiftool. \nTo remove all of the top-level metadata, you can use exiftool and qpdf:\n\nexiftool -all:all= \u003cpath.pdf\u003e -o \u003coutput1.pdf\u003e\nqpdf --linearize \u003coutput1.pdf\u003e \u003coutput2.pdf\u003e\n\nTo remove *all* metadata, you can use dangerzone or mat2",
"sig": "8de6009d7af0138877c1401ef22143eb4ae8ea5983c211c6a45e27c582b0143750ab6af816e5945544930574a79937a28c22764425ec4c73a3d844d2b9450b5c"
}