Encrypt PDF
Before sharing a sensitive report, contract, or financial document you may want to require a password for opening it. This tool applies AES-256 encryption to your PDF and lets you set both an owner password (to restrict printing and editing) and a user password (to restrict opening). The encrypted file downloads immediately — nothing is stored on a server.
Processed on your deviceNo signup required100% free
Select a PDF file to encrypt
PDF, DOC/DOCX, XLSX, CSV, PNG, or JPG
Browse files
Preview
Preview will be available after you upload the PDF
How to Use
- Select the PDF you want to protect by dragging it onto the page.
- Enter a strong password in the user password field.
- Optionally set an owner password to prevent printing or editing.
- Click Encrypt and download the password-protected PDF.
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Frequently Asked Questions
What is the difference between a user password and an owner password?
A user password is required to open the file. An owner password restricts actions like printing and editing but does not prevent opening.
Can I remove the password later?
Yes — open the PDF with the correct password in a standard reader and save a decrypted copy.
Is the encryption method secure?
AES-256 is the same standard used by banks and government agencies and is currently considered unbreakable with brute-force methods.
Will the encrypted PDF open on mobile devices?
Yes. Adobe Acrobat, Apple Preview, and most Android PDF viewers all support AES-256 encrypted files.