Proteger PDF

Why protect PDFs with Arawa PDF?

• AES-256 encryption

  The same encryption standard used for sensitive data everywhere — not a flimsy viewer-level lock.

• Nothing retained

  File and password are gone from our servers within ~1 hour, or the moment you hit delete.

• Typo-proof setup

  You confirm the password twice before encryption, so you can't lock yourself out by accident.

• Free, no signup

  Protect documents up to 50 MB without an account — no watermarks, no trial limits.

Protect PDF — frequently asked questions

How do I password protect a PDF for free?

Upload the file, choose a password and download the encrypted copy — no account, payment or watermark involved. Anyone who receives the file will need the password to open it.

How strong is the encryption?

Files are encrypted with AES-256, the current standard for PDF encryption. Without the password the contents can't be read; all modern PDF readers on desktop and mobile support opening it once the password is entered.

What if I forget the password?

There is no recovery. We keep neither your file nor your password, so a forgotten password means the encrypted copy stays locked. Keep the original file and store the password in a password manager.

Is my password sent to your servers?

Yes — the encryption itself happens server-side, so the password travels with the request over an encrypted HTTPS connection. It's used once to encrypt the file, and the task data is automatically deleted within about 1 hour (or immediately if you delete it yourself).

Can I let people read the PDF but stop them printing or editing it?

This tool sets an open password — the document is unreadable without it. For granular rules like "viewable but not printable", use the Change PDF Permissions tool instead.

Build a fuller security workflow

• Change PDF Permissions

  Fine-tune printing, copying and editing rights.

• Watermark

  Add a visible confidential notice on top of the encryption.

• Compress PDF

  Shrink the file before locking it.

• Sign PDF

  Sign it first — then encrypt the signed copy.