PDF Security
Protect PDF
Add a password to encrypt your PDF.
- Secure server, auto-deleted
- Free
- No sign-up
Select files
or drop your files here
Formats: PDF
This file is processed securely on our server and deleted automatically.
How it works
- 01
Upload your file or set the options
- 02
Adjust the options and process your file
- 03
Download the result, no watermarks
Related tools
Unlock PDF
Remove the password from a PDF you can open.
Sign PDF
Sign documents or request signatures from others.
Redact PDF
Permanently remove sensitive information from your PDFs to protect privacy and confidentiality.
Compare PDF
Identify and highlight the differences between two PDF versions to simplify document review.
Remove metadata
Strip title, author and other hidden data from the PDF.
Merge PDF
Combine multiple PDFs into a single document in any order.
Frequently asked questions
- Is Protect PDF free?
- Tools that process in your browser are free. Server and AI tools may have daily usage limits.
- What happens to my files?
- This file is processed securely on our server and deleted automatically. Result history is stored in this browser and can be cleared from the homepage.
- Do I need to install anything or sign up?
- No. Protect PDF works online in your browser, with no installs or account.