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Free PDF tools for Mac: merge, compress and protect PDFs offline

Most online PDF tools ask you to upload your file first. PaperSafeAI merges, splits, compresses and protects PDFs on your Mac instead, on files from your vault or from your computer, and every tool is free.

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Arrange

Put pages in the right order, in the right file.

  • Split

    Break one PDF into several files.

  • Add page numbers

    Number every page, the way application checklists ask for.

  • Organize & combine pages

    Reorder, rotate, delete or add pages, and join files into one PDF.

Shrink

Make a file small enough for the place it is going.

  • Compress to size

    Get under an upload limit — "max 200 KB" — while staying as readable as the limit allows.

  • Compress

    Make a PDF smaller without aiming for an exact size.

  • Photo to a size limit

    Get a photo under a KB limit, keeping as much detail as the limit allows.

Create

Turn photos, scans and text into a proper PDF.

  • Photos to PDF

    Turn photos of a document into one PDF, a photo per page.

  • Recognize text (OCR)

    Reads a scanned PDF and adds invisible text over each page, so it can be searched, selected and copied. It looks exactly the same.

  • ID photo

    A passport-style photo at the exact dimensions and file size your form asks for. Crops to the centre, so start with a photo where the face is in the middle.

Protect

Control what a copy reveals before it leaves your hands.

  • Flatten

    Make filled-in answers part of the page so nobody can change them afterwards.

  • Add password

    Encrypt a PDF (AES-256) so it cannot be opened without the password.

  • Add watermark

    Write who a copy is for across every page, so it cannot quietly be reused elsewhere.

  • Remove hidden info

    Strip the author, software, dates, embedded scripts and attachments a PDF carries out of sight.

Shortcuts

Common jobs done in one go.

  • Copy for someone

    A copy marked with who it is for, with hidden details removed — so an ID you hand over cannot be reused.

  • Application bundle

    Several documents joined into one numbered PDF, in the order you add them.

How it works

  1. Choose a tool

    Open Tools and pick the job: merge PDF files, split a PDF, reorder, rotate or delete pages, add page numbers or a watermark, compress a PDF, password-protect a PDF, or remove hidden information.

  2. Add your file and set it up

    Use a document from your vault or a file from your Mac. Options such as watermark text and position show in a live preview before anything is made.

  3. Keep the result

    Save a copy where you want it or add it to your vault. When the file came from your vault, you can replace it there and the previous version is kept.

Are the PDF tools free?

Yes. Every tool on the Tools screen is free on the free plan.

Are my files uploaded?

No. The tools process files on your computer.

How do I merge PDF files on a Mac without uploading them?

Open Tools, choose Organize & combine pages, add the PDFs, put the pages in the order you want, and save the combined PDF. It all happens on your Mac.

How do I compress a PDF on a Mac?

Open Tools and choose Compress, or Compress to size when a form asks for a limit such as 200 KB. PaperSafeAI makes a smaller copy and leaves your original as it was.

How do I password-protect a PDF?

Open Tools and choose Add password. The copy is encrypted with AES-256 and cannot be opened without the password.

Which Mac can run it?

Available for Mac with Apple silicon and macOS 14 or later. Android is available on Google Play. Windows and iOS public downloads are coming soon.

Available for Mac with Apple silicon and macOS 14 or later. Android is available on Google Play. Windows and iOS public downloads are coming soon.

Product information reviewed 2026-11-10 by PaperSafeAI. Contact the team.