Password Protect PDF Online
Add a password to your PDF instantly. 128-bit encryption, free, no signup required.
📁
Drag & drop your file here
or click to browse
PDF — Max 50MB
How to Password Protect a PDF
- Upload your PDF — Drag and drop or click to browse (max 50MB).
- Enter a password — Choose a strong password (minimum 4 characters).
- Download — Your password-protected PDF is ready instantly.
Why Password Protect a PDF?
- Prevent unauthorized access — Only people with the password can open the file.
- 128-bit encryption — Industry-standard AES encryption keeps your file secure.
- Restrict permissions — Prevents copying, printing, and editing.
- Free & private — No signup, files auto-deleted after 1 hour.
FAQ
What encryption is used?
Your PDF is protected with 128-bit RC4 encryption via Ghostscript, which is compatible with all major PDF readers.
Can I remove the password later?
Yes — use a PDF unlock tool with your password to remove protection.
Is my PDF secure on your servers?
Yes. Files are automatically deleted after 1 hour and never stored permanently.