No. QPDF WASM runs entirely in your browser.

What is the owner password?

The owner password controls printing, copying, editing, and other restrictions. The user password is required to open the file. You can set one or both.

Why won’t my password work?

Use the exact current password for encrypted PDFs. If you only know the user password, you may need the owner password to change some restrictions.

Change Permissions Online Free

Set or change user permissions on a PDF. All processing happens in your browser. No uploads, no signup—your files never leave your device.

Drop your PDFs here, or click to choose files

Your files never leave your device. All processing happens in your browser.

How to use

Upload PDF

Add the PDF you want to encrypt, decrypt, or re-restrict.

Passwords & permissions

Enter the current password if the file is locked. Set new user (open) and/or owner (permissions) passwords, or leave both empty to remove encryption. Checkboxes apply when an owner password is set.

Download

Run the tool and download the updated PDF. QPDF runs as WebAssembly in your browser.

Frequently asked questions

Encrypt PDF
Lock your PDF by adding a password.
Decrypt PDF
Unlock PDF by removing password protection.
Remove Restrictions
Remove password protection and security restrictions associated with digitally signed PDF files.