Protect PDF
Choose a file or drag & drop it here
A PDF document
Choose PDF🔒 Processed in your browser — never uploaded
Why use Protect PDF?
Add a password so only the right people can open your PDF. Encryption happens in your browser — the password is never sent anywhere.
What you get
- Encrypt a PDF so only holders of the password can open it
- The password is set in your browser and never sent anywhere
- No account or upload required
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How to Protect PDF
- 1Drop your PDF into the box above, or click to choose it.
- 2Enter a password to protect the document.
- 3Click Protect PDF to encrypt it.
- 4Download the password-protected file.
FAQs
What happens if I forget the password?
There's no recovery — the file is genuinely encrypted. Store the password somewhere safe, because we never see it and can't reset it.
Is the encryption strong?
The PDF is encrypted with a standard cipher so it can't be opened without the password, while still opening normally in any PDF reader once the password is entered.