Lock and protect PDF files with strong passwords or unlock password-restricted PDF documents directly in your browser with zero network transmission.
Open-password mode requires your password to read the file. Edit restrictions let anyone read it; your password controls changes in readers that respect PDF permissions.
Drag & drop your file here, or click to browse. Fully client-side with zero data uploads.
Lock and protect PDF files with strong passwords or unlock password-restricted PDF documents directly in your browser with zero network transmission.
Fast and easy from start to finish
Choose Mode: Select Protect to encrypt a file or Unlock to open a password-restricted PDF.
Enter Password: Type and confirm your password for encryption or unlock verification.
Save Document: Download your secure or unlocked PDF document immediately.
What you can do with this tool
Set document opening passwords to protect sensitive financial and personal files
Unlock password-protected files when the authorized password is known
100% Client-side cryptography with zero cloud storage
Live password match verification and clear security indicators
Unlock batch scale, higher resolution, and expanded limits
Apply strong encryption restricting copying, editing, and printing.
Secure dozens of confidential client files with one master key.
Allow high-resolution printing while preventing text extraction.
Answers to common questions about PDF Password Protector & Unlocker
Never. Encryption and decryption occur strictly inside your device's browser memory.
No, passwords cannot be recovered without entering the original key, ensuring maximum security.
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