Enter the password required to open the PDF and choose which actions should remain allowed.
Select one PDF file from your device or drag and drop it into the upload area.
Your secured PDF is ready.
Download it and share the password only with the right recipients.
Add password protection to your PDF online in a few clicks. Set an open password, choose which actions should be allowed, and download a secured copy instantly.
Want to prevent unauthorized access to a sensitive PDF? IronFreeTools' Protect PDF tool lets you add password protection and permission controls to any PDF file, directly in your browser, with no account needed.
Whether you're sharing a confidential report, distributing a licensed document, or simply adding an extra layer of security to personal files, PDF password protection is one of the most effective ways to control access to your content.
Unprotected PDF files can be opened, copied, and printed by anyone who receives them. Adding password protection ensures only authorized recipients can access the content. You can also restrict actions like printing, copying text, or editing the document, giving you granular control over how your PDF is used.
Upload your PDF, set a password, and choose permission controls. The tool applies encryption and returns a protected PDF ready for immediate download. This mirrors IronPDF's PDF password and permissions API, which supports 256-bit AES encryption and granular user permission settings. Explore all IronPDF security features for the full range of document protection options available in .NET.
Protect PDF adds a password to your document so the file cannot be opened without the correct credentials. It can also limit actions such as printing, copying, editing, and annotating.
Yes. Anyone opening the protected file in a compatible PDF reader will be prompted for the password.
Yes. You can keep printing, copying, editing, or annotation permissions enabled or disabled before generating the protected file.
No. The tool keeps the document content intact and applies protection settings to the output PDF.
This page currently processes one PDF at a time so the password and permission settings are applied consistently.
No. Protection happens locally in your browser using the IronFreeTools library.
Keep a copy of the password somewhere safe. If you lose it, opening the protected PDF may not be possible.
It provides strong practical access control for standard PDF workflows, but the exact enforcement of permission flags can vary between PDF readers.
No. The tool runs directly in your browser.
Yes. PDF password protection is available for free on IronFreeTools.
Password-protect PDFs in seconds Control common document permissions Keep processing in the browser No sign-up required Fast download of secured files Protect sensitive PDF documents without installing extra software.