ToolStudioFree
Runs in browser · Zero file uploads

Client-side engine

Unlock PDF

Unlock a PDF you already know the password for. Free. No cracking.

@cantoo/pdf-lib
ModeLocal sandbox

This does not guess or crack passwords. Wrong passwords fail.

  • PDF
  • 50 MB per PDF
  • 200 pages

Workflow

How to use Unlock PDF

Three steps. Your file is processed in this browser and is not uploaded by this tool.

  1. 01

    Choose the locked PDF.

    Choose the locked PDF.

  2. 02

    Enter the password you already know.

    Enter the password you already know.

  3. 03

    Download the unlocked copy.

    Download the unlocked copy.

Direct answers

Essential questions answered

Short answers for search and answer engines. Same facts as the FAQ.

How do I unlock a PDF online?

Choose the locked PDF, enter the password you know, then download the unlocked copy.

Can this guess a password?

No. Wrong passwords fail.

Is the PDF uploaded?

No.

Practical applications

Good for everyday workflows

  • Open your own locked PDF

    Remove encryption only when you supply the correct password. This tool does not crack passwords.

  • Remove a password you set earlier

    Remove encryption only when you supply the correct password. This tool does not crack passwords.

  • Export an unlocked copy for printing

    Remove encryption only when you supply the correct password. This tool does not crack passwords.

Got questions?

Frequently asked questions

Is unlock PDF free?

Yes on ToolStudio.

Will this crack unknown passwords?

No.

Is my PDF uploaded?

No.

Pick a tool. Get it done.

Free browser utilities on ToolStudio. No account. Most tools keep files on this device.