Protect PDF file

Add password protection to your PDF files.

or drop PDF file here

How to do

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3 quick steps to password protect a PDF.

1

Upload your PDF files

Select up to 12 PDFs to protect at once, or drag and drop them into the browser. Every file stays on your device throughout.

2

Set a password

Choose a password and confirm it — AziPDF shows a strength meter as you type. Store it somewhere safe, since it can't be recovered if lost.

3

Download your protected files

AziPDF applies real 256-bit AES encryption entirely in your browser, then downloads a single protected PDF or a ZIP if you protected several at once.

FAQs

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Answers about protecting PDFs with a password.

Yes. 100% browser-based process. Your files are never uploaded to any server — the password and encryption happen entirely on your device.
AziPDF applies real 256-bit AES encryption, the same standard used by banks and government agencies, so your PDF can only be opened with the correct password.
The password cannot be recovered or reset by AziPDF. Make sure to store it somewhere safe before closing this tab.
Yes. Upload up to 12 PDFs and protect them all with the same password in one go — they are packaged into a ZIP file for download.
No. Protecting a PDF only adds a password and encryption layer. The pages, text, and formatting stay exactly the same.
No. AziPDF is completely free to use with no watermarks, no limits, no subscription required.
Yes. Protected PDFs allow high-resolution printing, form filling, and accessibility tools, while blocking editing, copying, and page extraction.
AziPDF encrypts PDF files in your browser instead of uploading them to a server. No registration, no watermarks, and no daily limits.
Yes. The password required to open the file also carries AES-256 encryption, which restricts editing, copying, and page extraction by default.
Yes. Use AziPDF's Unlock PDF tool with the same password to remove the protection whenever you need to.