PDF password tools that stay on your device

PDFSmith does one job well: managing PDF passwords. Every feature below runs locally in your browser, with no accounts, no upload queues, and no file size caps set by a server.

Features

Unlock PDFs

Remove password protection from PDFs when you know the correct password. Safe and legitimate PDF unlocking that requires password verification.

Lock PDFs

Add password protection to PDF files to keep sensitive information secure. Lock PDFs quickly before sharing or storing them.

Change Password

Update or replace an existing PDF password without recreating the document. Maintain security over time with easy password changes.

Offline processing

Works with no internet connection required. Once the page has loaded, process PDFs anywhere, including on flights and in restricted networks.

Privacy first

No cloud uploads or file transmission. Your PDF is processed in your own browser tab, so confidential documents stay confidential.

Fast and instant

Unlock or lock PDFs in seconds with on-device processing. No waiting in queues, no file size limits set by a server.