How do I protect a PDF with a password?

Upload one PDF, enter and confirm a password, click Protect PDF, and download the password protected PDF.

Can I open the protected PDF without the password?

No. The resulting PDF is encrypted and requires the password you entered during protection.

What is the maximum file size?

Guest users can protect PDF files up to 10MB and 100 pages. Registered users can protect PDF files up to 25MB and 300 pages. Pro users are not limited by size or page count.

Password security workflow

Protect PDF with Password Online

Upload one PDF, choose a password, and download a new encrypted PDF that requires the password before opening.

Quick answer

Protect PDF adds password protection to a PDF online. It helps restrict access to sensitive documents before sharing or storage.

Need watermarking instead? Need to delete pages instead?

Password protectedCreate a secured PDF copy for sensitive files.

Browser basedUpload, protect, and download from one page.

Plan checkedPage count and file size limits are checked before processing.

How to protect a PDF

Upload one PDF file.
Enter a password and repeat it.
Click Protect PDF.
Download the encrypted PDF result.

Limits by plan

Guest: up to 10MB and 100 pages.
Registered: up to 25MB and 300 pages.
Pro: unlimited file size and page count for valid PDF files.