Protect PDF Files with Password
Protect PDF files with password encryption online for free to keep confidential contracts, financial statements, and personal records secure. Our tool wraps your PDF in a secure 128-bit RC4 or AES encryption shell, preventing unauthorized users from opening, copying, or printing your text.
How it works:
1. Upload the PDF file you need to secure.
2. Enter your desired password in the text box.
3. Click Protect PDF and download your encrypted file instantly.
Key Features:
- Secure encryption parameters that protect document confidentiality.
- Fast compile times that take less than 5 seconds.
- Files processed in memory and permanently deleted from our disks.
- Free security utilities with no premium registration blocks.
- Secure files up to 20MB in the free package tier.
Frequently Asked Questions:
Is PDF Password Protect free?
Yes. Secure your private documents without any licensing fees.
What encryption standard is used?
Our tool implements standard PDF encryption that is recognized by all PDF readers.
Are my files stored on your servers?
No. Files are deleted from our servers within one hour.
Related tools:
Decrypt files using Unlock PDF or add visual labels using Watermark PDF.