jSignature
jSignature is a JavaScript widget (a jQuery plugin) that simplifies creation of a signature capture field in a browser window, allowing a user to draw a signature using mouse, pen, or finger.
- Works in all mainstream browsers that support Canvas or Flash
- Captures signatures as smooth vector images. (Yes, SVG is supported!)
- Ingenious, super-efficient (i.e. not lagging) real-time curve smoothing.
- Allows manipulation of signature strokes, like “Undo last stroke”
- Automatically adapts to your page’s layout and colors.
- Free and Open Source.
https://willowsystems.github.io/jSignature/#/about/