Encrypt, decrypt, sign, and secure your PDFs with comprehensive security tools. All operations happen locally in your browser for maximum privacy.
Lock your PDF by adding a password.
Remove password protection and restrictions from your PDF documents.
Draw, type, or upload your signature.
Remove password protection and security restrictions associated with digitally signed PDF files.
Set or change user permissions on a PDF. Modify passwords and access controls.
Remove metadata, annotations, scripts, and more.
Make form fields and annotations non-editable by flattening them into the PDF.
Optimize PDF for fast web viewing.
Strip hidden data from your PDF.
Manage layers
100% client-side, your files never leave your device.
All tools, no trials, no paywalls.
Process PDFs instantly, without waiting or delays.
Start instantly, no accounts or emails.
We use strong AES-256 bit encryption to password-protect your PDFs, the industry standard for secure document locking.
No. Because your files are encrypted locally and we don't store your passwords or files, we cannot recover a lost password.
You can use our Unlock PDF tool. You must know the current password to unlock it, after which we generate a password-free version.
Never. The AES encryption is processed directly by your computer's browser natively.