Password Protect a PDF
Add password protection to a PDF with AES-256 encryption. Set a password locally and download the protected document.
Let’s protect pdf.
Add pdf files to get started.
Three steps. One less task.
- 01
Add the PDF and choose a new password with at least six characters.
- 02
Create the password-protected copy and save it.
- 03
Reopen that copy in your intended PDF reader and verify the password before sharing.
Good to know
Fitabyte does not store or recover passwords. Keep an unencrypted original safely. Test the downloaded PDF in the recipient's reader and share its password separately.
Add a password to open a PDF
Fitabyte applies AES-256 encryption to the PDF in your browser. The current settings allow printing and filling forms; this tool is intended to require a password to open the copy, not to promise that an authorized reader cannot reuse its contents. Use a strong password and keep an accessible original.
Password protection does not erase information from the pages or remove metadata. Share the password through a separate channel, and verify that the recipient's reader supports the result. Some upload portals reject encrypted PDFs because they need to inspect or process the document.
A few things you might ask.
Can Fitabyte recover a forgotten password?
This tool has no password recovery workflow. Keep the password securely and retain your original unencrypted file where appropriate.
Can I unlock an already protected PDF here?
This page adds protection; it is not an unlocking tool and has no existing-password field. Start with a PDF you can already access and are authorized to edit.
Are my files uploaded to a server?
This tool processes files on your device. Moving a file between Fitabyte tools uses a one-use browser handoff that expires after 10 minutes; abandoned handoffs are cleared on your next visit. Your original stays unchanged.
Can I use this tool on my phone?
Use a current browser and keep the tab open during processing. Available memory and processing speed depend on your device; start with a smaller file for large PDFs or video.