Protect PDF
Encrypt and password-protect your PDF files. Secure sensitive documents with strong encryption to prevent unauthorized access.
Password Protect Your PDF
Add password protection to control access to your documents. Only people with the password can open the file.
- Encrypt PDFs with a strong password
- Prevent unauthorized access to sensitive documents
- Share safely with controlled access
- 256-bit encryption for maximum security
- Easy to set and remove passwords
Why Protect PDFs?
- Financial Documents: Protect bank statements and invoices
- Personal Information: Secure documents with private data
- Business Secrets: Keep proprietary information confidential
- Medical Records: Protect patient and health information
- Legal Documents: Secure contracts and agreements
Password Tips
Choose a strong password:
- At least 8 characters long
- Mix of uppercase, lowercase, numbers, and symbols
- Avoid common words or personal information
- Make it unique and hard to guess
- Remember it or store it securely
How to Use
- Upload Your PDF: Select the PDF file you want to secure.
- Set a Password: Enter a strong password to encrypt your document.
- Protect and Download: Click Protect PDF and download your password-protected file.
Frequently Asked Questions
Is the PDF protect tool free?+
100% free, no signup, no watermarks.
How strong is the encryption?+
We use 256-bit encryption to secure your PDF, preventing unauthorized access.
What if I forget the password?+
We do not store your password, so make sure to remember it or store it securely — without it, the PDF cannot be opened.
Can I remove protection later?+
Yes, PDFs protected with nanPDF can have their password removed using a compatible unlock tool if you know the password.