LitePDFPro
PDF Security Tools
Secure PDFs before sharing, or clean and verify documents that already contain sensitive information. Use encryption, signatures, redaction, and comparison together when the stakes are higher.
Protect PDF locks files with a password, Unlock removes protection you already know, Sign adds approvals, Redact permanently removes private strings, and Compare spots unexpected edits.
Protect PDF
Password protect PDF online free. Encrypt your PDF so only people with the password can open it. Secure and private. No signup.
Unlock PDF
Unlock PDF online free. Enter the current password and download an open copy. Not a cracking tool. Files are deleted after you leave.
Sign PDF
Sign PDF online free. Draw, type, or upload your signature and place it anywhere on the page. No account. Secure and private.
Redact PDF
Redact PDF online free. Permanently remove sensitive words, not just a black box. No signup. Files are not stored.
Compare PDF
PDF comparator online free. See two PDFs side by side with a red difference map. No signup. Files are removed after you leave.
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New here? Read our free PDF & image guides for email compression, Word conversion, and more.