Protect PDF
Encrypt with AES-256 via Web Crypto API. Fully client-side — your PDF never leaves the browser.
⚠ This creates a .folio-enc file using AES-256-CBC + PBKDF2 (200,000 iterations). Use the Unlock PDF tool to decrypt it. For native Acrobat password protection, a desktop tool is required as the Web platform doesn't support PDF encryption natively.
Drop PDF to protect
Click or drag a PDF file here
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Encryption Settings
Encrypted!
Unlock PDF
Decrypt Folio-encrypted files (.folio-enc) or remove passwords from standard protected PDFs.
Two modes: (1) .folio-enc files — full AES-256 decryption with your password. (2) Standard PDFs — attempts decryption via pdf-lib. Highly encrypted PDFs (AES-256 Acrobat) may not decrypt without the correct password.
Drop a .folio-enc or password-protected PDF
Click or drag here
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Unlocked!
Redact PDF
Draw black boxes over sensitive areas. Regions are burned permanently into the PDF — content cannot be recovered.
⛔ Permanent. Redacted content is destroyed and cannot be recovered from the exported file. Review all boxes before exporting.
Drop PDF to redact
Click or drag a PDF file here
🖱 Click and drag on the page below to draw redaction boxes. Use the nav buttons to move between pages. All boxes across all pages will be applied on export.
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Redactions applied
Flatten PDF
Merge form fields and annotations into static page content. Output is non-editable and print-ready.
Flattening rebuilds the PDF via pdf-lib so all interactive elements become static content. Required before printing, archiving, or signing.
Drop PDF to flatten
Works on annotated PDFs, form PDFs, and Folio exports
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Flattened!
Hash & Verify
Generate SHA-256, SHA-512 and MD5 fingerprints. Verify a file hasn't been tampered with by comparing hashes.
A hash is a unique fingerprint for a file. If even one byte is changed, the hash changes completely. Share the SHA-256 hash alongside your PDF so recipients can verify authenticity.
Drop any file to generate hashes
PDF, images, documents — any file type accepted