Protect PDF
Add password protection to your PDF.
Drop a file here or browse
PDF files only • up to 25MB
How it works
- 1Upload your file(s)
- 2Configure options
- 3Click Process
- 4Download result
Files are processed securely and deleted immediately after download. We never store your documents.
Password Protect Your PDF with AES-256 Encryption
When sharing sensitive documents — contracts, payslips, medical records, financial statements — a password-protected PDF ensures only the intended recipient can access the content. Our tool applies AES-256 encryption (the same standard used by banks and governments) to your PDF in seconds. Without the password, the document is completely unreadable.
How to use Protect PDF
- 1Upload the PDF you want to protect
- 2Enter a strong password (mix of letters, numbers, and symbols recommended)
- 3Confirm the password to avoid typos
- 4Click 'Protect PDF' and download the encrypted file
Frequently Asked Questions
What encryption standard is used?▾
AES-256 encryption — the industry standard for document security. It is considered unbreakable with current computing technology when a strong password is used.
Can I restrict printing or copying without a password?▾
Yes. Use the 'Permissions password' option to restrict actions (printing, copying, editing) without requiring a password to open the file.
What makes a strong PDF password?▾
12+ characters mixing uppercase, lowercase, numbers, and symbols. Avoid names, dates, and common words. A random four-word passphrase is both strong and memorable.
What if I forget the password?▾
There is no way to recover a forgotten password — that is the nature of AES-256 encryption. Always store your PDF passwords securely.