Edit PDF metadata
The title a reader shows in its tab bar, the author a library catalogue indexes, the keywords a search engine reads — all of it lives in a few metadata fields, and most PDFs have them wrong or blank.
Most readers show the title in the tab and window bar, falling back to the file name only when it is missing. To remove the second, XMP copy of all this as well, use the sanitise tool.
The document is read on your device and rewritten there.
Leave a field blank to keep whatever is already there, or turn on Clear blank fields to wipe the ones you leave empty.
They are written as a proper keyword list rather than one long string, which is what indexers expect.
Open Document properties in any reader to confirm.
Most readers and most browsers show the metadata title in the tab and the window bar, falling back to the file name only when it is missing. A document whose title still says Microsoft Word - Untitled1.doc announces exactly that to everyone who opens it.
Creator is the application the content was authored in; Producer is what converted it to PDF. Both are set automatically and both leak your toolchain. Set them to whatever you want, or clear them.
This changes the information dictionary. A file may also carry an XMP packet with a second copy of the same fields; to get rid of both, use the sanitise tool.
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