Signature Field
Purpose
The Signature field type renders a signature pad (canvas) where users can draw a signature. You can set pen color, background color, and a clear button with icon.
When to use
- Consent forms, contracts, or any form that requires a drawn signature.
Key settings
- Field — Field Type: signature, Field Title.
- Signature — Signature Pen Color, Signature Background, Signature Clear (on/off), Signature Clear Icon and position/size/color.
- Validation — Required (if the signature must not be empty).
- Layout — Sizing (width/height) affects canvas size; label/description as needed.
Top features to configure
- Pen and background colors — Use high contrast so signatures are visible and readable.
- Clear signature button — Let users quickly redraw without refreshing the page.
- Clear button icon styling — Match icon color/size to the rest of the form design.
- Canvas sizing — Increase width/height for better signing on mobile.
- Required signature — Enable when signatures are legally or operationally required.
Validation behavior
- Required prevents submission when the signature pad is empty.
- Signature value is captured from the canvas, so users should be able to clear and redraw.
- Very small canvas sizes can make signatures hard to complete accurately.
Common mistakes
- Enabling required signature without clear instructions for users.
- Using a low-contrast pen/background color combination.
- Not testing signature behavior on touch devices.
Verify it works
- Submit with an empty signature when required and confirm validation.
- Draw, clear, redraw, and submit to confirm the final signature is saved.
- Test on desktop and mobile/tablet for touch input behavior.
What's Next
- Use File upload if you also need supporting documents.
- Review Form settings for submission and notification behavior.
- Check FAQ if signatures are not saving correctly.