Password-protect a PDF.
plume · local · secure/protect-pdf · works offline
Open a PDF, choose a password, and click Protect PDF. It's locked with AES-256 encryption, so from then on the file opens only with that password, in any reader on any device. A strength meter helps you pick one that actually holds up. It all happens on your device, and your password is never sent.
1
Open your PDF
Drop in the file you want to lock. It stays on your device.
2
Set a password
Choose a password of 8+ characters and confirm it. Encryption is AES-256.
3
Download
Save the protected PDF. It opens only with your password.
Processed on your deviceNo uploads, everNo sign-up & free
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