Remove metadata from a PDF
Before you send a PDF to a client or publish it, look at what is embedded: author, organisation, the template path, the editing timestamp. None of it is visible on the page, and all of it travels with the file.
Clean Metadata — free and local
Shows the author, software and timestamps hidden inside a PDF, then strips them.
The two stores, and why one hides
The Info dictionary is the classic one: Title, Author, Subject, Keywords, Creator (the app), Producer (the library that wrote the file), CreationDate, ModDate. Every PDF reader exposes it if you look.
The XMP packet is a second, XML-based store that many tools write as well. It can contain the same fields plus edit history, colour profiles and identifiers. Most “remove metadata” features clear the first and leave the second intact.
What usually leaks, in practice
Word and Google Docs write the signed-in account name as Author. InDesign writes the document’s original file path. Scanners write the device name. Creative tools write the full editing history.
Timestamps are the quiet one: a document dated last year inside its content can carry a ModDate from this morning, which tells the recipient it was edited just before sending — sometimes exactly what you did not want to disclose.
Side benefit: the file gets smaller
Cleaning rewrites the document from its live object graph, so orphaned objects and the XMP packet are dropped. A few percent is typical; a file that has been through several tools can shrink much more.
Questions
Does cleaning change how the pages look?
No. Only the metadata dictionaries are rewritten; page content, text and images are untouched.
Can metadata be recovered afterwards?
Not from the output file. Copies you already sent or saved elsewhere still carry it.
Does it remove hidden layers or annotations?
No. Those are page content, not metadata. Use a dedicated redaction tool if you need to remove visible-but-hidden content.
Related
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