Add a password to any PDF file in seconds. Optionally restrict printing, copying, and editing.
Part of our Password Protect PDF Free suite
Add a password to any PDF file in seconds. This free online tool lets you set an opening password so only people with the password can view the document. Optionally restrict printing, copying, and editing with five independent permission controls. No uploads to servers — your file stays on your device throughout the entire process. Adding a password is the simplest and most effective way to control access to a PDF document. Once you set a password, the file is encrypted with AES-256, and anyone who tries to open it must enter the correct password first. You can also set a separate owner password that grants full control over the document, allowing you to change permissions or remove the password entirely while keeping the user password in place for recipients.
Select or drag and drop the PDF file you want to protect with a password.
Choose a strong password and configure what actions are allowed — printing, copying, modifying, annotating, and filling forms.
Get your password-protected PDF instantly. Everything runs in your browser — no server uploads.
Add passwords to shared documents in cloud drives and collaboration platforms for an extra layer of security beyond the platform's access controls.
Password-protect digital books and manuscripts to prevent unauthorized distribution. Restrict copying to prevent text extraction for piracy.
Add passwords to pricing proposals and quotes before sending to prospects, ensuring competitors cannot access your pricing strategy if emails are forwarded.
Protect quarterly reports and board presentations with passwords before distributing to board members, ensuring confidentiality of financial data.
Never send the password in the same email as the PDF. Use a separate channel like a text message, phone call, or encrypted messaging app to communicate the password.
If you want people to read but not print or copy, uncheck those permissions before encrypting. This is useful for sensitive documents that should only be viewed on screen.
After adding a password, test the encrypted PDF on both desktop and mobile devices to make sure the password prompt appears correctly on all platforms your recipients use.
All processing happens locally in your browser. Your files never leave your device.
No uploads, no waiting for servers. Instant processing powered by your device.
No limits, no watermarks, no registration required. Free forever.
Encrypt PDF files online with AES-256 encryption. No file uploads to servers. Set passwords and restrict permissions in your browser.
Lock your PDF files with a password so only authorized people can open them. Free, private, and runs entirely in your browser.
Professional PDF encryption tool with AES-256 security. Set user and owner passwords, configure permissions. Browser-based and free.
Secure your PDF documents for free with AES-256 encryption. No signup, no limits, no watermarks. Everything runs in your browser.
Professional online PDF password protection with AES-256 encryption. Set user and owner passwords, configure permissions. 100% private.
Password-protect PDFs without Adobe Acrobat Pro. Same AES-256 encryption, free, no installation. Works in your browser.
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