PDF · Add Password
Lock the PDF here, before it goes anywhere.
Pick a password, type it twice, and every PDF in the batch gets an AES-encrypted copy that standard readers won’t open without it.
One-time purchase · macOS 26 Tahoe or later, Apple silicon recommended
How it works
Three steps, start to finish.
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01
Open Add Password
Press ⌃⌥Space and type “protect pdf”, or pick it from MightyBench’s menu bar icon.
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02
Drop PDFs, set a password
Add one PDF or a batch. Type the password in Password and again in Confirm; the strength meter shows how strong it is.
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03
Press Add Password
Encrypted copies appear in a new dated folder in Downloads › MightyBench. The unprotected originals stay where they were, so keep them somewhere safe.
The details
Small things, done properly.
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Encrypted with AES
Each protected copy is encrypted with AES, so the contents can’t be opened without the password.
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Asks in Preview and browsers
The password prompt appears in Preview, web browsers and any other standard PDF reader, wherever the file ends up.
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One password, whole batch
Drop several PDFs and lock them all with the same password in one go.
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Typed twice, strength shown
Entering it in Password and Confirm guards against a typo, and the strength meter shows how strong your choice is.
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The password stays here
Your password never leaves your Mac. Encryption happens locally with PDFKit, with no account and no upload.
Specs
Add Password, at a glance.
Lock a PDF before you share it.
| Opens | |
|---|---|
| Saves as | Password-protected PDF (AES) |
| Settings |
|
| Needs | Nothing extra |
| Originals | Never changed |
| Saved to | Downloads › MightyBench › date Add Password |
FAQ
Questions about Add Password
Anything else? Email support@mightybench.com and a person will reply.
How do I password-protect a PDF on a Mac?
Open Add Password, drop the PDF in, type a password and confirm it. Press Add Password and the encrypted copy is saved to a new dated folder in Downloads › MightyBench.
What encryption does Add Password use?
AES. Any standard reader, including Preview and web browsers, then asks for the password before it opens the file.
Can I protect several PDFs with one password?
Yes. One password covers the whole batch, so every PDF you drop in is locked with the same password.
Is my password sent anywhere?
No. The password never leaves your Mac. Encryption happens on the device, with no account, no cloud and no analytics.
What if I forget the password?
MightyBench can’t recover it: Remove Password needs the password and never guesses or cracks one. Keep the unprotected original, which Add Password leaves untouched.
Plus forty-eight other tools.
Add Password comes with every other MightyBench tool: video, audio, images, PDFs and on-device AI in one native Mac app. Pay $39 once for one Mac, with every MightyBench 1.x update included.
One-time purchase · macOS 26 Tahoe or later, Apple silicon recommended