How to password protect several PDFs at once on iPhone and iPad

Sending a batch of documents to an accountant, a lawyer or HR? Protecting each one separately takes time, and it's easy to forget one. One password for the whole set keeps them all safe and easy to open for the right person.

Download on the App Store
PremiumiPhone and iPad · iOS 16+ Updated October 2026

Why protect documents before sending them

Emails get forwarded, attachments end up in shared folders, phones get lost. A password on a PDF means that only someone who knows it can read the document, wherever the file ends up.

A good password

Use at least 8 characters, mixing letters, numbers and a symbol, and avoid names or birth dates. Share it through a different channel from the files, and keep a copy where you’ll find it.

The simplest way to protect many PDFs on iPhone and iPad

Protect several PDFs in Unlock my PDF adds the same password to every file you choose, in one go. Each PDF then asks for that password before it opens.

The Tools tab with Open a PDF and the cards of the tools Three PDFs added to Protect several PDFs New password and confirmation typed, strength Excellent 3 PDFs protected, with Share 3 files

The full flow · 28 s

How to password protect several PDFs at once

Steps

  1. In the Tools tab, tap Protect several PDFs. Add the PDFs and choose one password for all of them.

    The Tools tab with Open a PDF and the cards of the tools
  2. Tap Add PDFs, choose Files and select all the files at once.

    Three PDFs added to Protect several PDFs
  3. Type it in New password and again in Confirm password. The bar under the field shows how strong it is.

    New password and confirmation typed, strength Excellent
  4. Drag Slide to protect. Share the protected files together or tap Save to Files.

    3 PDFs protected, with Share 3 files

Good to know

Send the password separately

Email the files and send the password by text or phone call: if one message goes to the wrong person, the documents stay closed.

Files that already have a password

They show Already protected: skipped and keep their own protection.

Find them again later

Every protected copy also goes to Library, under Protected.

Questions

Which encryption does it use?

AES with a 128-bit key, which every PDF reader can open with the password.

Can each file have a different password?

In this tool all files get the same password. To give one file its own password, use Protect on that file.

Is it free?

Protect several PDFs is a PRO tool, included in Premium. With the free version you can protect 3 PDFs a day, one at a time.

Are my files uploaded?

No. The files are encrypted on your iPhone or iPad.

Protect all your PDFs at once

Unlock my PDF for iPhone and iPad · iOS 16+

Download on the App Store