PDF यहाँ ड्रैग करें या सेलेक्ट करें
सिंगल या बल्क (1 से 10+ PDFs) · Ctrl+V से पेस्ट करें
256-Bit AES Encryption
State-of-the-art military grade cryptographic PDF encryption for complete confidential security.
Password Generator
Instant 1-click strong password generator with automated strength verification and copy helper.
Live Document Preview
Visual page-by-page inspector to inspect and verify PDF contents before applying password protection.
Single & Bulk Lock
Protect a single document or encrypt multiple PDF files in batch and download everything as a ZIP.
Free Online PDF Password Protect — Lock Confidential PDF Files with 256-Bit AES Security
Protect sensitive financial records, salary slips, bank statements, personal identification documents, and commercial contracts. AK Print Seva's PDF Password Protect Studio applies genuine 256-bit AES encryption to lock and password-protect your files against unauthorized access.
Frequently Asked Questions (FAQs)
Q1. How to add password protection to a PDF?
Upload your PDF file, enter and confirm your secret password (or click 'Generate Strong Password'), then click 'Protect PDF'. Your encrypted file will download instantly.
Q2. Can a protected PDF be opened without the password?
No. With genuine 256-bit AES encryption, nobody can open or view document contents without the exact password.
Q3. Can I lock multiple PDFs with the same password at once?
Yes! Upload multiple PDF files, set your password once, and click Protect to batch encrypt all files and download them as a ZIP bundle.
Q4. Are my passwords and documents stored on your server?
No. Processing is done securely with immediate client transmission. No passwords or file contents are permanently stored.