How to password-protect a PDF on iPhone
Email is a poor place for a scanned ID, a tax form or a medical record: messages get forwarded and inboxes get breached. A password on the PDF means a copy that escapes is useless without it.
This is a ScanMojo Pro tool: $39.99 a year with a 7-day free trial, or $6.99 a month (U.S. prices). Scanning and PDF export stay free.
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Open Tools › Protect PDF
Choose a document in ScanMojo or a PDF from Files. Or, from a document, tap Share › PDF with Password.
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Set a password
Use something the recipient doesn't have to guess, but others can't.
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Send the PDF
Share it by email or messages as usual.
- 4
Send the password separately
Tell the recipient the password another way, like a phone call or a text, not in the same email.
Choosing a password
Long beats clever: three or four unrelated words are stronger than a short password with symbols, and easier to read out over the phone.
Questions
Can I protect a PDF I didn't scan?
Yes. Protect PDF works on PDFs from Files, too.
Is this free?
Password-protecting PDFs is part of ScanMojo Pro.