Password Protect a PDF
Choose a PDF, set a password, and export a new, encrypted copy that requires that password to open.
Drag and drop a PDF file here
or
Files are processed in your browser and are not uploaded to our servers.
Files are processed in your browser and are not uploaded to our servers.
How protect pdf works
- Choose a PDF file using the uploader above, or drag it in.
- Use the thumbnail rail and contextual panel to set up password protect PDF.
- Review the result in the page preview before exporting.
- Export — PageFlow builds a new file locally and downloads it to your device.
What this tool changes
- Encrypts the document so a password is required to open it.
What it preserves
- All page content and structure — only access protection is added.
Good to know
- PageFlow does not store your password. If you forget it, the password cannot be recovered.
- Reader compatibility for the strongest encryption modes can vary by PDF viewer.
- Password protection restricts opening the file; it is not equivalent to enterprise DRM.
Frequently asked questions
- Does PageFlow store my password?
- No. The password is used locally to encrypt the file and is never transmitted or saved.
- What happens if I forget the password?
- PageFlow cannot recover it. Keep your password somewhere safe before closing the tab.