Loading tool…

Dr.PDF: 34 free PDF tools to merge, split, convert, edit, sign, and protect documents.

Product

Home
All tools
Guides
FAQ
Security

Categories

Flows
Organize
Optimize
Convert
Edit
Security
AI

Company

About
Contact
Guides

Legal

Privacy
Terms
Cookies

© 2026 Dr.PDF. All rights reserved.

Home
PDF security
Protect PDF with Password Online

Protect PDF with Password Online

Encrypt PDF documents with a password.

Select pdf file

or drag and drop your files here

Select file

Max 100 MB per file · 250 MB total

How to use this tool+

1Upload your PDF.
2Enter a strong password - recipients will need it to open the file.
3Download the encrypted PDF. Share the password separately.

Related tools

Common next steps

Password protect PDF - encrypt locally

Add password encryption before emailing or storing sensitive PDFs. Encryption runs in your browser - the password never leaves your device.