Lock PDF

Lock PDF files with passwords to restrict editing, copying, downloading, or opening. Free online tool with AES-256 encryption. No installation or registration required. Protect contracts, reports, or personal docs in seconds. Files auto-delete after processing.

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Lock PDF from editing, downloading, copying, or opening with our free online tool. Add robust password protection to sensitive documents—financial reports, legal contracts, or confidential data—in seconds.

How do I lock my PDF file?

Upload your PDF.

Set permissions:

Restrict editing/downloading

Block text/image copying

Password-protect opening

Encrypt & download the secured file.

Lock PDF from editing to maintain document integrity. Prevent unauthorized changes to contracts or forms.
Lock PDF download to control file distribution—ideal for confidential drafts.
Lock PDF from copying to safeguard intellectual property, blocking text/image extraction.
Lock PDF from opening with AES-256 encryption, ensuring only password-holders access content.

Custom permissions (print/editing/copying)

No file size limits

Zero watermarks or registration

Auto-deletion after 60 minutes

Perfect for businesses, students, or individuals securing tax records, portfolios, or research. All processing happens locally in your browser—your files never touch our servers. Experience enterprise-level PDF protection 100% free!