Protect PDF
Add a password and encryption to keep your PDF private. 100% free, secure and no sign-up required.
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About Protect PDF
Add a password and encryption to keep your PDF private. Everything runs through our fast, private pipeline — free, with no watermarks and no account needed.
How to use Protect PDF
Upload your file by dragging it into the box above or clicking to browse — files up to 100MB are supported.
Protect PDF starts automatically and runs securely in your browser, so your files never leave your device.
Preview the result, then click Download to save the converted file.
Protect PDF online — free and private
Add a password and encryption to keep your PDF private. Everything runs through our fast, private pipeline — free, with no watermarks and no account needed.
Unlike most online PDF services, this tool processes your document directly in your browser whenever possible — your files aren't parked on someone's server, there's no queue, no watermark and no page limits. It works on any device with a modern browser, including phones and tablets.
Frequently Asked Questions
Is Protect PDF free?+
Yes, Protect PDF is completely free with no watermarks or sign-up.
Are my files safe?+
Yes. Files are processed securely and deleted automatically shortly after processing.
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