Document security
Protect PDF online
Create a standard AES-256 password-protected PDF that opens in compatible PDF readers.
Opens the selected tool directly. Processing stays in your browser.
Why use PDF Mixo?
Share a normal .pdf file while requiring the recipient to enter the password.
- Standard encrypted PDF
- AES-256 protection
- Adobe and browser-reader compatible
- Runs locally
How it works
Three simple steps
Set a strong password
Download the protected PDF
Good practice: keep your original file and inspect the downloaded result before relying on edits, signatures, OCR, or redactions.
Related PDF tools
Unlock PDF
Remove a known password from a protected PDF and download an unencrypted copy.
Open toolEdit PDF
Edit selectable PDF text with a visual replacement preview, add notes, highlights and drawings, then export a clean copy.
Open toolMerge PDF
Combine PDF files and arrange their pages into one organized document.
Open tool