Gallium app icon - a melting lock

Recover your
PDF password.

Forgot the password to a locked PDF? Gallium finds it fast โ€” no cloud, no subscription, no nonsense.
Just drag, drop, and unlock.

Download Free macOS 13 Ventura or later
Features

Everything you need,
nothing you don't.

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Fast Recovery

Uses optimized multicore+CPU brute-force to recover PDF passwords in minutes or hours, not weeks.

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100% Private

Your files never leave your Mac. Everything runs locally โ€” no uploads, no accounts, no data collection.

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Drag & Drop Simple

Drop a PDF onto the app window. That's it. Gallium handles the rest and shows you the password when found.

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Batch Processing

Have multiple locked PDFs? Process them all at once. Gallium queues them up and works through each one.

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Smart Hints

Remember part of the password? Enter a hint to massively narrow the search and get results faster.

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Native Mac Design

Built with SwiftUI. Feels right at home on macOS โ€” supports Dark Mode, Retina displays, and Apple Silicon.

How It Works

Three steps to unlock
any PDF.

1

Drop your PDF

Drag your locked PDF file into the app window.

2

Get your password

Gallium searches and displays your password the moment it's found. Copy it with one click and open your file.

FAQ

Common questions.

Is this legal to use?

Yes โ€” Gallium is intended for recovering passwords to your own files. Always ensure you have the right to access any PDF you unlock.

Does it work on owner-locked PDFs (print/copy restrictions)?

Gallium focuses on recovering the open password (the one required to view the file). Owner restriction passwords may also be removed depending on the encryption level.

How long does recovery take?

It depends on password length and complexity. Simple passwords are found in seconds; complex ones may take longer. Using a password hint dramatically speeds things up.

My files stay private?

Absolutely. Gallium is 100% offline. Your PDF never leaves your Mac โ€” there are no servers, no analytics, no cloud uploads of any kind.

Which versions of macOS are supported?

Gallium requires macOS 13 Ventura or later. It runs natively on both Intel and Apple Silicon Macs.

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Ready to unlock your PDF?

Download Gallium for free and recover your password in minutes.

Download for Mac โ€” Free

macOS 13 Ventura or later  ยท  Works on Intel & Apple Silicon