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Remove hidden data from a PDF. Before you send it.

A PDF can carry far more than its pages show: your name, the app it came from, scripts, attached files, where a photo was taken, and earlier versions with text you deleted. Fyllyo shows you all of it and removes what you tick. Free, on your Mac.

Free, with no account · Nothing uploaded · Apple silicon, macOS 13 or later

Fyllyo’s Remove hidden data window listing a PDF’s author, app and title, camera details in a photo, a script, an attached file and a note, plus an earlier saved version.

How to do it in Fyllyo

  1. Open the PDF

    Drop it on Fyllyo’s Home screen, or choose Open.

  2. Choose Tools, then Remove hidden data…

    Fyllyo lists everything the file carries that its pages don’t show.

  3. Tick what to remove

    Document details, scripts and attached files are ticked for you. Comments are your call.

  4. Remove and save

    It’s gone from the file when you save. Earlier saved versions go too.

Why Fyllyo

See it before you share it

Author names, the app that made the file, titles from old drafts. Fyllyo shows each one, so you know what you’re sending.

Photo locations and earlier versions

Photos inside a PDF can say where they were taken. Saved PDFs can keep earlier versions with deleted text. Fyllyo finds both and removes them.

Pairs with redaction

Black out names and numbers with Find and redact, then remove the hidden data, and the file says only what its pages say.

What Preview’s redaction left in a PDF, in our test

Questions

How do I remove metadata from a PDF on a Mac?

Open the PDF in Fyllyo, choose Tools, then Remove hidden data…, tick what to remove, choose Remove and save. It’s free, with no account.

Can Preview remove PDF metadata?

Not really. Preview shows a few document details but doesn’t remove scripts, attached files, photo locations or earlier saved versions. Fyllyo lists all of them and removes them for free.

What hidden data can a PDF contain?

Author and app details, titles and keywords, scripts that run when it opens, attached files, comments, camera and location details inside photos, and earlier versions of the file that can still hold deleted text.

Is my file uploaded?

No. Fyllyo checks and cleans the PDF on your Mac, and your files are never sent anywhere.

More you can do with your PDFs

Every PDF tool is free, with no account: reading, filling in, signatures, certificate signing, page tools, combining, splitting, text recognition, passwords, text editing, redaction, smaller PDFs and XFA forms. Optional: Fyllyo Paid, $99 once, fills forms from your documents with AI that runs 100% on your Mac.