Is this a legally binding digital signature?

It is a visible electronic signature image. Whether that is sufficient depends on the document and your jurisdiction. It does not include a cryptographic certificate.

Is my signature stored?

No. It exists only in this browser tab while you use the tool and is never uploaded.

Can I use a password-protected PDF?

Unlock it first with the Unlock PDF tool, using its password. Protected files cannot be processed directly.

Sign PDF - Free Online Tool

JavaScript is turned off. InspireTools processes files in your browser, so the tools need JavaScript to run.

Draw, type or upload your signature and place it on a PDF.