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Password-protect a PDF, free
Lock a sensitive PDF so it can only be opened with a password. myoffice encrypts the file with AES-256 and saves the protected copy alongside your original.
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How it works
- Step 1
Create a free account and upload the PDF you want to protect.
- Step 2
Right-click the file → PDF Tools → Protect, and choose the password required to open it.
- Step 3
Click Run — the protected PDF is saved in My Files and shows a lock badge.
Why use it
- AES-256 encryption, the modern standard for PDF passwords.
- Optional separate owner password if you want one different from the opening password.
- Your unprotected original is kept, so you never lose access to your own document.