Smooth Signature Pad (Pro) is the professional standard for capturing digital signatures and annotations in Bubble.
Unlike basic canvas tools, this plugin uses Bezier curve interpolation to simulate the physics of a real pen. The faster you draw, the thinner the line becomes, creating a natural and biometric-looking signature.

🔥 Pro Features:

↩️ Undo Functionality: Mistake? Just undo the last stroke instead of clearing the whole pad.

📸 Image Annotation: Upload an image (e.g., a photo of a document or a previous signature) onto the canvas to draw over it.

📐 SVG Vector Export: Get infinite-resolution signatures perfect for PDFs and printing.

🖊️ Pen Control: Customize the minimum and maximum line thickness for a "Ballpoint" or "Marker" feel.

🔒 Read-Only Mode: Display signatures securely without allowing edits.

Core Features:

  - Smart "Sign Here" placeholder.

  - Transparent PNG export.

  - Mobile & Touch friendly (works on iPad/Android).

  - High-DPI (Retina) support.


VERSION 2.0 - THE ENTERPRISE UPDATE ✍️ We focused on making this the most robust signature pad for legal and professional use.

☁️ Native Upload to Bubble (S3) Stop saving heavy Base64 strings to your database.

New Action Upload Signature: Sends the file directly to your Bubble storage and returns a clean URL.

SVG Vector Support: The only plugin that lets you save signatures as .svg files. Perfect for PDF generation, contracts, and printing (infinite quality, no pixelation).

📱 Smart Resize (Mobile Rotation Fix)

Rotation Bug Fixed: In most plugins, if a user rotates their phone, the signature disappears. v2.0 fixes this. We now persist the drawing data during any resize event.

Retina Ready: Crisp lines on high-DPI screens.

🎨 Pro Features

Background Image Support: Load a contract or image and sign on top of it.

Undo/Redo: Full history support, even with background images.

Dynamic Styles: Change pen color and thickness programmatically via workflow.

Demo Test: https://demo-app-56978.bubbleapps.io/version-test/signature_pro/1764673550938x283719504528054500

Editor: https://bubble.io/page?id=demo-app-56978&test_plugin=1764666889159x311967997461790700_current&tab=Design&name=signature_pro&ai_generated=true&type=page&elements=bTIbv