Signature

The signature field collects a drawn mark and stores it as an image data string.

Validation and storage

A non-empty signature must begin with an image data URL. The built-in renderer provides the drawing control and the response view renders the stored image. Save and resume can persist a signature with the other draft answers.

The field has no type-specific schema options beyond the shared label, description, required state, and visibility conditions, and it can't be prefilled from a URL.

Add a signature field

In the dashboard, select Add block and choose Signature.

const signatureField = {
  id: "signature",
  kind: "signature",
  label: "Sign to confirm",
  required: true,
} as const;

Related

• Save and resume: Preserve in-progress answers before submission.
• Data retention and deletion: Plan how long signature responses should remain.
• Custom: Build a different acknowledgement or signing experience.