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Add a password to your PDF

Drop one or more PDFs, type a password, and download protected copies that need that password to open. Optionally restrict printing, copying, or editing. Free, no sign-up, and your files and password never leave your browser.

Drag & drop files here

Or click to browse (max 30 files, up to 100 MB each)

File upload

No account required · Files and passwords never leave your browser · 100% free

Why use this PDF protector?

Protect several PDFs at once

Drop in up to 30 PDFs in a single batch. They all get the same password — perfect for a stack of monthly invoices, contracts, or course handouts heading to one recipient.

Strong AES encryption

The password is enforced with the same AES encryption used by Adobe Acrobat. Anyone who opens the PDF in Preview, Acrobat, or any standard reader will be prompted for the password before they can see a single page.

Restrict printing, copying, or editing

Beyond just blocking access, you can set permissions: prevent printing, prevent text/image copy, or prevent edits. Useful when you want to share a contract for review but not for redistribution.

Confirm-password field to prevent typos

Type the password twice and the tool checks they match before encrypting. No more discovering you mistyped the password right after you sent the file.

Runs entirely in your browser

Your PDFs and your password are processed right on your device. Nothing is uploaded to a server, nothing is stored, nothing is logged. Your password never leaves the page.

Free, no sign-up, no watermark

No trial, no paid tier, no email gate, and no watermark on the protected PDF. Just the original document, encrypted with the password you chose.

Sometimes you just need a password on the front

Sending payslips to your team

You're a small business owner running payroll yourself. The accountant generated thirty PDF payslips, one per employee, and now you need to email each one to the right person — but you don't want a payslip leaking if someone forwards the wrong attachment by mistake.

You drop all thirty PDFs into the protector, type a shared password (the company employee-portal password your team already knows), confirm it, and click Protect. Thirty encrypted PDFs land in your Downloads folder.

You email each payslip to its owner. Anyone who opens the file gets a password prompt; anyone who forwards it accidentally just forwards a locked file. Crisis avoided, and your team uses a password they remember anyway.

A confidential contract before you send it

You drafted a settlement agreement in Word and exported it to PDF. The other side's lawyer wants to see it before signing, but you'd rather not have it floating around their inbox — or worse, in a search-indexed shared drive.

You drop the PDF into the protector, type a password you'll communicate by phone, and toggle off "Allow copying" so they can't paste the text into ChatGPT or another tool. A protected PDF appears in your Downloads.

You attach it to the email and call the lawyer five minutes later with the password. Their copy of the file stays inside their head and their PDF reader, not in their LLM history.

Course materials you only want enrolled students to read

You're an instructor running a paid online course. You've prepared a beautifully laid-out workbook, and you want to send it to the twelve students who paid — but not have it bouncing around the open web after the third week.

You drop the workbook PDF into the protector, set a password (the same one students already use to access the course portal), and turn off "Allow printing" so the workbook can't easily be photocopied for non-students.

You upload the protected PDF to the course portal. Students enter the password they already know to open it. Anyone who shares the file with a friend just shares an unreadable encrypted blob.

1

Upload your PDFs

Drop one or more PDFs onto the page, or click to browse. Up to 30 files at a time.

2

Set a password

Type the password twice to make sure it matches. Optionally expand permissions to restrict printing, copying, or editing.

3

Download the protected PDFs

Click Protect and grab each PDF individually, or download them all as a ZIP.

  • Your PDFs and password never leave your browser — there's nothing to delete.
  • We never see, store, or share your files or password. Encryption happens entirely on your device.
  • No sign-up needed. Drop your PDFs, type a password, and download.