Password Protect PDF
Add password protection to secure PDFs
Password Protect PDF
Drag & drop PDFs or click to browse
PDF files only • Max 500MB • Multiple files supported
How to Use Protect PDF
- 1 Upload your PDF file
- 2 Set a password to open the document
- 3 Optionally set an owner password for permission control
- 4 Choose which actions to allow (print, copy, edit)
- 5 Download your password-protected PDF
What You Get
Professional PDF encryption with 256-bit AES. Set both user password (to open) and owner password (to control permissions). Restrict printing, copying, editing, and more.
Input: Confidential report.pdf
Output: Protected PDF that requires password to open
Input: Contract draft.pdf
Output: PDF that opens freely but cannot be edited or copied
Input: Financial data.pdf
Output: Fully encrypted with printing disabled
How do I password protect a PDF for free?
Upload your PDF to SwiftPDF, enter a password, and download the protected file. It's 100% free with no limits or watermarks.
What is the difference between user and owner password?
User password is required to open and view the PDF. Owner password controls permissions like printing, copying, and editing - the document can be opened without it, but actions are restricted.
Is my PDF uploaded to your servers?
No. All encryption happens directly in your browser using JavaScript. Your files and passwords never leave your device, ensuring complete privacy.
What encryption does SwiftPDF use?
SwiftPDF uses industry-standard 256-bit AES encryption, the same level used by banks and governments for sensitive data.
Can I remove password protection from a PDF?
SwiftPDF adds protection. To remove it, you'll need the original password and a PDF unlock tool.
Will the protected PDF work on all devices?
Yes. Password-protected PDFs created by SwiftPDF work with Adobe Reader, Preview, Chrome, and all major PDF viewers.
All encryption happens locally in your browser. Your PDFs and passwords never leave your device.