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EnglishFrançaisDeutschEspañolItalianoPortuguês日本語한국어NederlandsPolskiالعربية繁體中文SvenskaDanskNorskSuomiČeštinaTiếng ViệtBahasa Indonesia

On iPhone with Nimbo

How to password-protect a PDF on iPhone

Written by the Nimbo team ·

Short answer

To password-protect a PDF on iPhone, open it in Nimbo, tap PDF Tools, then Protect with Password, and type the password twice. Nimbo saves an encrypted copy that asks for the password when opened, on any device.

How to password-protect a PDF on iPhone

Step by step

  1. Open the PDF in Nimbo.
  2. Tap PDF Tools, then Protect with Password.
  3. Enter and confirm the password.
  4. Save the protected copy, then Share it.
  5. Send the password separately (by message, not in the same email).

Why Nimbo

  • Standard PDF encryption, readable everywhere.
  • Done on your iPhone.
  • The unprotected original stays in your Library.

Frequently asked questions

Can the recipient open it on Windows?

Yes. Any PDF reader asks for the password.

What if I forget the password?

It cannot be recovered; keep the original or note the password.

Is the file uploaded?

No. Encryption is done on your iPhone.

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