Lock PDF Online
Protect your PDF with a password. Add password protection so only people with the password can open the document. Free, secure, and runs entirely in your browser - no uploads and no watermarks.
Drag & Drop PDF Here
Or click to select a file
Supports PDF files only
PDF & Password
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Add a PDF and set a password to lock it
Result
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Add a PDF, set a password, and click "Lock PDF"
Privacy
This tool runs in your browser. Your PDF and password are never uploaded to any server, so your documents stay private and secure.
Frequently Asked Questions
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