Encrypt your PDF with Password.
Secure Client-Side Encryption
Protecting a PDF file means securing it with a password so that unauthorized users cannot open, edit, copy or print the document. Password protection is essential when sharing confidential files such as identity documents, contracts, bank statements and official forms.
GKPTool Protect PDF tool allows you to encrypt PDF files using advanced AES-256 encryption directly inside your browser without uploading files to any server.
This tool uses AES-256 encryption, the same security standard used by banks and government organizations. Without the correct password, encrypted PDF files cannot be opened.
You can choose what others are allowed to do:
All encryption happens locally in your browser using JavaScript. Your PDF file is never uploaded to our servers, ensuring maximum privacy.
Protect PDF tool works smoothly on Android phones, tablets, laptops and desktop browsers without installing any software.
Yes, this tool is completely free with unlimited usage.
No. All processing happens locally inside your browser.
Yes, you can disable or allow printing.
AES-256 bit encryption is used.
No. For security reasons, passwords cannot be recovered.