FileFryer PDF Protect & Unlock
Encrypt your PDF with bank-grade AES-256 password protection, or permanently remove passwords from protected PDFs. 100% private.
Military-Grade PDF Encryption & Password Removal — 100% Client-Side
Lock documents with uncrackable 256-bit AES passwords or permanently remove passwords from protected PDFs without cloud exposure.
Industry-Standard AES-256 Encryption
Compliant with standard ISO PDF specifications and compatible with Adobe Acrobat Reader, Apple Preview, Google Chrome, and all certified PDF viewers.
Permanent Password Decryption
Tired of re-entering passwords on bank statements and payroll stubs? Decrypt them once and store an unlocked copy for convenient access anytime.
WebAssembly Performance
Powered by optimized native C++ cryptographic routines compiled to WebAssembly for near-instant cryptographic throughput right inside your browser.
Zero Server Uploads & Total Privacy
Neither your PDF bytes nor your secret passwords are ever uploaded or transmitted across the internet. 100% offline, client-side peace of mind.
User & Owner Password Permissions
Set view permissions or restrict printing, editing, and copying with granular cryptographic permission flags.
Cross-Platform Universal Compatibility
Locked PDFs open seamlessly across Windows, macOS, iOS, Android, and Linux using default operating system viewers without extra plugins.
How to Lock or Unlock PDF Documents Online
Quick and secure steps to protect or decrypt your files:
Upload Your PDF
Drop your PDF into the upload zone. FileFryer automatically detects whether your document is already locked with a password or ready to be encrypted.
Lock or Unlock
To protect, set your custom password with AES-256 encryption. To unlock, enter the existing password once to permanently strip the password security restrictions.
Download Instantly
Download your protected or decrypted PDF immediately. Files are compiled in local device memory with 100% vector clarity and zero watermarks.
Client-Side Offline Processing & Zero Server Uploads
FileFryer runs an isolated WebAssembly engine inside your browser. No files, passwords, or encryption keys are ever transmitted over the network or saved to remote databases.
Frequently Asked Questions (FAQ)
Common questions about locking, decrypting, and securing PDF documents.
What encryption algorithm does FileFryer use to lock PDFs?
FileFryer utilizes standard 256-bit AES (Advanced Encryption Standard) encryption by default, as well as optional 128-bit AES for older legacy reader compatibility.
Can I unlock a PDF if I don't know the password?
No. Legitimate PDF decryption requires entering the valid user or owner password. FileFryer is designed to remove security restrictions from authorized documents you already have access to.
Will encrypting or unlocking change my document layout or font formatting?
No. Content-preserving PDF transformation engines encrypt and decrypt the raw data streams while leaving vector typography, page dimensions, and metadata intact.
Are my uploaded documents and passwords safe?
Yes, 100%. FileFryer operates locally in your web browser. Neither your document files nor your passwords are ever uploaded or transmitted to any external server.
Can unlocked PDFs be opened on any device without a password prompt?
Yes. Once unlocked, the encryption dictionary is completely removed from the file structure, allowing the PDF to open directly on any device without entering a password.
Can I use special characters in my PDF password?
Yes. FileFryer supports full UTF-8 password strings including numbers, symbols, spaces, and punctuation to ensure the highest entropy and protection against brute-force attacks.