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PDF · Lock

Add a password to a PDF

Set a user password (to open) and an owner password (to change permissions), then download an AES-256 encrypted copy. All done in your browser.

Runs locallyNo uploadAES-256

Drop a PDF to encrypt

or click to choose a file

PDF only · up to 100.00 MB · processed in your browser

AES-256 is strong, but a password is only as strong as you make it. Use a long, unguessable passphrase for documents that genuinely need to stay private.