PDF Password Protect & Unlock

AES Cryptographic

Bidirectional security engine for bank statements, payrolls, and contracts. Add cryptographic password locks to restrict document viewing, or permanently unlock password-protected PDFs you have the credentials for.

All Tools

Interactive Tool Console

Client-Side Execution • Runs in browser

Password protection and unlocking happen 100% locally in your browser. Passwords are never sent online.

Guest Quota: 2/2

Select or Drag & Drop PDF to Protect

Processed 100% locally with AES-256 standard.

Live API Integration Public Edge API

Call this tool in your codebase or backend services directly via REST API.

curl -X POST "https://findfreeapi.com/api/v1/tools/pdf-protect-unlock" \
  -H "Content-Type: application/json" \
  -d '{"action":"protect"}'

POST/api/v1/tools/pdf-protect-unlock

No API Key Required (Public Edge)

Key Standards & Highlights

Apply strong password protection to prevent unauthorized opening

Permanently unlock password-protected documents to remove login prompts

Passwords and documents stay strictly in your browser memory

Zero-trust local encryption without third-party network transmission

Frequently Asked Questions

How secure is a password-encrypted PDF?

Protected PDFs are encrypted using industry-standard AES cryptography. Unauthorized viewers cannot read, extract, or print without the exact passphrase.

Can this tool crack a PDF password if I forgot it?

No, this is an authorized decryptor, not a brute-force cracker. You must know the existing password to remove encryption.