Protect PDF is a free online tool that allows you to secure PDF files with a password and control user permissions like printing, copying, editing, and annotating. It uses strong 128-bit encryption to keep your documents safe and private. No software installation is required and all files are processed securely in your browser.
PDF documents often contain sensitive or confidential information that should not be freely edited, copied, or shared. The Protect PDF Files Online tool helps you secure your PDF documents by applying password protection and advanced permission controls in just a few clicks.
This tool is designed for simplicity, privacy, and strong encryption, making it suitable for personal, academic, and professional use.
With this tool, you can lock your PDF using a user password, ensuring that only authorized users can open the document. An owner password is automatically generated securely to prevent unauthorized permission changes.
Your PDF is protected using 128-bit AES encryption, which is widely trusted for document security.
Beyond password protection, this tool lets you decide exactly what users can and cannot do with your PDF.
You can enable or disable the following permissions:
This gives you full control over how your document is used after sharing.
Uploading your PDF is quick and easy. You can:
The clean interface ensures smooth navigation without confusion.
Your privacy is taken seriously. All PDF files are:
No files are stored permanently or shared with third parties.
Follow these simple steps to secure your PDF:
The entire process takes only a few seconds.
This PDF protection tool is perfect for:
Since this is a browser-based tool, you can protect PDF files from any device without installing software. It works on desktops, tablets, and mobile devices, providing reliable PDF security wherever you are.
Learn more from Adobe: PDF password protection.
Click or drag PDF here
Max 100MB
Owner password will be auto-generated securely.
Select what users are allowed to do with the protected PDF.