Protect PDF
Add a password to a PDF.
What is the Protect PDF?
Password-protect a PDF online for free with AES-256 encryption. Set a password and download the locked file.
How to use the Protect PDF
- 1
Upload your PDF
Choose the PDF file (or files) to process.
- 2
Set your options
Pick any options for the task.
- 3
Download the result
Download the processed file — your upload is deleted right after processing.
Frequently asked questions
Is the protect pdf free?
Yes — no signup, no watermark. Your file is processed and then deleted; it's never stored.
More free tools
No signup, no limits — jump straight into another PDF tool.
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Combine multiple PDFs into one file.
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Split a PDF into individual pages.
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Rotate every page in a PDF 90, 180, or 270 degrees.
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Remove a password from a PDF you own.
Watermark PDF
Overlay a diagonal text watermark on every page.
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Add page numbers to a PDF.
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