E-Signature Capture
Let respondents draw legally binding electronic signatures on a public Google Form without requiring them to log into a Google account or download external PDF viewers. The E-Signature addon replaces a Short Answer question with a touch-friendly drawing canvas, uploads the image to Cloudflare R2, and injects an =IMAGE("...") formula directly into your connected Google Sheet.
Works on Short Answer fields only. Attach it from Field addons in the form customizer or via the AI Assistant.
Collect signed agreements and embed signatures directly into Google Sheets.
Key capabilities
- Smooth Bézier stroke interpolation: Velocity-sensitive vector curves powered by
signature_pad. - Automatic High-DPI / Retina scaling: Crisp, pixel-perfect signatures on all mobile and desktop screens.
- In-cell spreadsheet rendering: Injects an
=IMAGE()formula so Google Sheets natively renders the signature image in your spreadsheet row. - Mobile gesture lock: Prevents accidental screen scrolling while drawing with
touch-action: none. - Legal consent checkbox: Requires respondents to confirm legal consent before submission.
- Theme adaptation: Automatic contrast switching between light and dark modes.
Plan availability
E-Signature capture is available on Starter and Pro plans.
Learn more
- How to collect signatures with Google Forms — step-by-step setup guide and Google Sheets configuration
- Connect to AI Agents via MCP — automate signature field attachment with Claude, Cursor, or Codex
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