Protect PDF with Password.
Add password protection to any PDF free online — no signup, no watermark. AES-256 encryption. Lock printing, copying, and editing. Instant & secure.
- AES-256 bit encryption standard
- Set separate open and permissions passwords
- Restrict printing, copying, and editing
- Add expiry date to the protected PDF
- Compatible with all PDF readers
- No account or email required
Drop your PDF here
or click to browse files from your device
Max 100MB per file · Processed on secure servers
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How it works
Convert in 3 simple steps.
Upload your file
Drag & drop or click to select your PDF file. We support files up to 100MB.
Convert instantly
Our servers process your file immediately. High-quality PDF conversion in seconds.
Download & done
Download your converted PDF file instantly. Files auto-delete after 1 hour.
FAQ
Common questions.
How do I add a password to a PDF for free?
Upload your PDF, enter the password you want to set, configure any permission restrictions (printing, copying, editing), and click Protect. Download your encrypted PDF instantly.
What level of encryption is used?
We use AES-256 bit encryption — the same standard used by banks and governments. This is the strongest encryption available for PDF files.
Can I set different passwords for opening and editing?
Yes. You can set an "Open" password that readers must enter to view the document, and a separate "Permissions" password for editing, printing, and copying controls.
Will the protected PDF work on all devices?
Yes. The encrypted PDF is fully compatible with Adobe Acrobat, Preview on Mac, and all modern PDF readers on desktop and mobile.
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