Encrypt / Decrypt PDF
LocalPassword-protect a PDF with AES-256, or remove a password you know. Runs locally in your browser.
Drag files here, or click to browse
Supports .pdf,application/pdf
Choose fileAES-256 encryption via @cantoo/pdf-lib (MIT). Files never leave your browser.
What is it? Encrypt / Decrypt PDF password-protects a PDF with AES-256, or removes a password you know, running locally in the browser.
TL;DR: Add or remove a PDF password locally.
How to use
- Open a PDF.
- Enter a new password to encrypt, or the known password to decrypt.
- Download the result.
FAQ
Where does encryption happen?
In your browser — the password and file are not uploaded.
Which encryption?
AES-256 for encryption; decryption requires the correct password.
Limitations
- Cannot break unknown passwords.
- Some permission flags vary by reader.
Privacy
Your files are never uploaded — everything is processed locally in your browser.