Inkwell PDF Tool

Password Protect PDF
Secure Sensitive Documents

Lock your PDF with a password so only authorized readers can open it. Add permissions to restrict printing, copying, or editing. All applied locally in your browser.

Use this tool free View pricing
100% browser-based Files never uploaded Free to start

What makes it great

Everything you need, nothing you don't.

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Open password protection

Require a password to open the document at all

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Permissions password

Restrict printing, copying text, or editing

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Military-grade encryption

AES-256 encryption applied to protected files

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Zero exposure

Encryption happens in-browser — your file is never uploaded

Three steps

No setup. No learning curve. Just results.

Step 01

Upload your PDF

Drop the PDF you want to protect onto the tool.

Step 02

Set your password

Enter an open password, a permissions password, or both.

Step 03

Download protected PDF

Your encrypted, password-protected PDF is ready to download.

Common questions

Everything you need to know.

What type of encryption does Inkwell use?

AES-256 encryption — the same standard used by banks and government agencies.

Can I set different passwords for opening vs editing?

Yes — you can set an open password (required to view) and a separate permissions password (required to edit or print).

What if I forget the password?

There is no recovery option — encrypted PDFs without the password cannot be opened. Store your password safely.

Is this available on the free plan?

Password Protect is a Pro plan feature, available with unlimited usage.

The full toolkit

All tools. One place. All private.

Ready to Password?

Free to start. No account needed for basic use. Your files never leave your browser.

Use Password Protect PDF free