Can Utiline recover my password?
No. Use a password manager; Utiline does not store passwords.
Secure · Encrypt PDF
Encrypt a PDF with AES-256
Add a password in a backend pipeline built to avoid logging secrets.
- AES-256 backend stage
- Password fields excluded from telemetry
- Transient output
sealed document
Secure processing, simple download.
You upload from this page (or paste input for instant tools). Utiline processes your request in the cloud and gives you a link to download the result—nothing heavy runs in your browser.
When to use Encrypt PDF
Built for everyday file work.
- Share a protected form
- Protect a client packet
- Add a temporary password before email
Enter a user password; owner password defaults to the same value unless provided.
Run online
Run Encrypt PDF
Choose your files (or enter a URL when the tool allows it), then start the job. Utiline uploads securely, processes in the cloud, and shows progress here until your download is ready.
Drag and drop files here, or use the file picker below.
Download links expire after a limited time. Save your output promptly — see data retention (draft).
0 selected1 KB total8 MB per fileQueue: low
FAQ
Encrypt PDF questions
Is the key exposed to the browser?
No. Encryption runs on Utiline servers; your browser never receives the encryption keys.