Secure PDF
Encrypt, decrypt, and secure PDF files
Unlock PDF
Unlock PDF files online for free. Remove a known password from a PDF in your browser and save an unprotected copy. Files and passwords stay on your device.
Protect PDF
Protect PDF files with a password for free. Encrypt PDFs with AES and set print or copy permissions in your browser. Files and passwords stay local.
Redact PDF
Visually blackout, mosaic, or blur sensitive information in PDF files. Irreversible physical rasterization and deep metadata sanitization for privacy protection.
Flatten PDF
Flatten PDF forms and annotations. Make content non-editable.
Digital Signature
Add X.509 digital signatures to PDF documents. Sign PDFs with PFX, P12, or PEM certificates for legal validity.
Validate Signature
Verify digital signatures in PDF documents. Check certificate validity, signer information, and document integrity.
Remove Metadata
Strip metadata from PDF files. Remove author, dates, and document properties.
Change Permissions
Modify PDF permissions. Control printing, copying, and editing access.
Find and Redact
Search and redact text across all pages of a PDF. Batch redact sensitive information like account numbers, names, and more.
Sanitize PDF
Remove hidden data from PDFs. Clean metadata, scripts, and sensitive information.
Sensitive Data Redaction
Automatically detect phone numbers, emails, and IDs, overlay opaque masks, and physically erase underlying text streams.
Certificate Encrypt & Sign
Secure PDFs using asymmetric public-key certificate encryption, paired with a 3D gold wax-seal imprint and PKCS#7 signature.
Signature Position Guide
Automatically locate signature fields in contracts, and inject interactive hovering guides and anchors for quick signing.