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Foundry✦pdf

PDF tool · in your browser

Password-protect a PDF for email

Email attachments can be forwarded, archived, or sent to the wrong inbox. Add a password before you attach the PDF: choose the file, enter a strong password, and download an encrypted copy without the document or password leaving your browser.

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PDF · processed in your browser, never uploaded

How it works

  1. 1Select your PDF.
  2. 2Type a password (at least 4 characters).
  3. 3Click Password Protect — the encrypted PDF downloads instantly.

When this helps

  • Protect a financial statement or identity document before emailing it.
  • Lock a contract or client file that may pass through several inboxes.
  • Add a second layer of access control to an attachment sent outside your organization.

Tips for a clean result

  • Send the password through a separate channel such as a call or secure message.
  • Encryption cannot prevent an authorized recipient from saving or forwarding an opened copy.

Frequently asked questions

Where is my password sent?+

Nowhere. Encryption runs in your browser; the password never leaves your device. If you lose it, the file can't be recovered.

What encryption is used?+

Standard PDF password encryption, so any PDF reader will prompt for the password.

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