Filevolo

Protect PDF Online

Encrypt a PDF with a password using real AES-256 encryption, processed in your browser.

Drag a PDF here, or choose a file

Set a password afterward.

You can also paste a file directly (Ctrl+V or ⌘V).

This tool runs entirely in your browser. Your file is not uploaded to a server at any point.

Real Encryption, Not Just a Prompt

This sets an actual PDF open password using AES-256 encryption, the same standard modern PDF readers use - not a cosmetic lock that a determined tool can strip. Without the password, the file's contents are unreadable, not just hidden behind a login screen.

When Is This Useful?

Add a password before emailing a payslip, contract, or ID scan, sharing a file over a service you don't fully trust, or archiving something sensitive. The document stays readable and printable for anyone who has the password - the protection travels with the file itself, not with whatever app or link you sent it through.

Frequently asked questions

AES-256, the current PDF 2.0 standard and the strongest widely-supported option. It requires a modern PDF reader, which covers virtually everything in use today.

Yes - unlike some password tools that rebuild each page as an image, this encrypts the real PDF structure. Text stays selectable and searchable once opened with the password.

There is no way to recover it, from Filevolo or anyone else - that's what makes the encryption real. Keep it somewhere safe, like a password manager, before you share the file.

Yes - use Unlock PDF with the same password whenever you need the file open again.

No. The PDF is read, encrypted, and rebuilt entirely in your browser - your password never leaves your device.

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