protect-pdf Ready

Drop your PDF here

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PDF
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Password Settings
Required to open the PDF
Enter a password
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Your password is never sent anywhere. All encryption happens locally in your browser.

Encrypting PDF...

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PDF Protected Successfully!

How to Password Protect a PDF

Add password encryption to your PDF documents

1

Upload Your PDF

Drag and drop your PDF or click to browse. Your file stays on your device — nothing is sent to any server.

2

Set Password

Enter a password to protect your document. Anyone who wants to open the PDF will need this password.

3

Download Protected PDF

Click Protect and download your encrypted PDF. Share it knowing that only people with the password can open it.

Why Use Our PDF Protection Tool

True Privacy

Encryption happens in your browser. Your PDF and password never leave your device — no server ever sees your unprotected document or your chosen password.

Strong Encryption

Your PDF is encrypted with industry-standard AES-256 algorithm. Without the correct password, the document content is completely inaccessible.

Instant Protection

No waiting for servers. Encryption runs locally in seconds, even for large documents. Download your protected file immediately.

Universal Compatibility

Password-protected PDFs work with all major PDF readers — Adobe Acrobat, Preview, Chrome, Edge, and every other standard PDF application.

Completely Free

No premium tier, no per-file fees, no limits. Protect as many PDFs as you need at no cost.

No Account Needed

No registration, no email. Just open the page, set your password, and download the protected file.

Frequently Asked Questions

Upload your PDF, type in a password, and click Protect. The tool encrypts the document and gives you a download link for the protected file. Anyone opening it will need the password.
Yes. The tool uses AES-256 encryption, the industry standard. The password is applied locally in your browser — it is never sent to any server, so only you know it.
No. All encryption happens locally in your browser. Your unprotected PDF and your password never leave your device.
Yes. Use our Unlock PDF tool to remove password protection from a PDF. You will need to know the current password to unlock it.
Yes. Password-protected PDFs created by this tool are compatible with Adobe Acrobat, Preview, Chrome's built-in viewer, Edge, and all standard PDF applications.
Currently the tool protects one PDF at a time. Upload your file, set the password, download the result, then repeat for additional files.
There is no way to recover a forgotten password. We do not store your password anywhere — it only exists on your device during the session. Make sure to remember it or store it securely.
No. This tool runs entirely in your browser. No Adobe Acrobat, no downloads, no installations needed.

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