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Made this last night because I needed a signature drawing tool but a Google didn’t reveal any mobile friendly pages with a <15s interaction and no email gate, t

Made this last night because I needed a signature drawing tool but a Google didn’t reveal any mobile friendly pages with a <15s interaction and no email gate, to get a nice looking signature. The historical signatures were a nice touch Claude helped me put together for SEO.

whycome 8mo ago
This is cool. It seems hard to add just dots to signature? It may be some kind of delay waiting for a touch action.
- elliotbnvl 8mo ago
  This was surprisingly tricky, but fixed! The issue was that short tap strokes were being fed through the stroke-rendering library (perfect-freehand), which applies start/end taper over a configurable length. When the total stroke distance is shorter than the combined taper length, the stroke tapers to nothing — so dots just disappeared. The fix detects tap-like strokes and renders them directly as small ellipses, bypassing the stroke pipeline.
  - whycome 8mo ago
    Amazing! And thanks for the insight into what caused it. Thats useful even if just to understand how this specific library works.
pimlottc 8mo ago
The Preview app in macOS includes a nice signature tool. You can create a signature using the touchpad or digitize a written signature using a webcam https://support.apple.com/guide/preview/fill-out-and-sign-pdf-forms-prvw35725/mac https://support.apple.com/guide/preview/fill-out-and-sign-pd...
- al_borland 8mo ago
  I wish Preview had a better way to import signatures. I was messing around one day and made one I really liked with Apple Notes on the iPad. It looks like I eventually got it in Preview, but it doesn't look as clean as it did in Notes. I think I ended up printing it out and holding it up to my webcam, but it wasn't easy. I remember fighting with it a fair bit and I'm still not happy with the results. You'd think Apple Notes and Preview would be able to talk to each other enough to import directly.

whycome 8mo ago

This is cool. It seems hard to add just dots to signature? It may be some kind of delay waiting for a touch action.

elliotbnvl 8mo ago
This was surprisingly tricky, but fixed! The issue was that short tap strokes were being fed through the stroke-rendering library (perfect-freehand), which applies start/end taper over a configurable length. When the total stroke distance is shorter than the combined taper length, the stroke tapers to nothing — so dots just disappeared. The fix detects tap-like strokes and renders them directly as small ellipses, bypassing the stroke pipeline.
- whycome 8mo ago
  Amazing! And thanks for the insight into what caused it. Thats useful even if just to understand how this specific library works.

pimlottc 8mo ago

The Preview app in macOS includes a nice signature tool. You can create a signature using the touchpad or digitize a written signature using a webcam https://support.apple.com/guide/preview/fill-out-and-sign-pdf-forms-prvw35725/mac https://support.apple.com/guide/preview/fill-out-and-sign-pd...

al_borland 8mo ago
I wish Preview had a better way to import signatures. I was messing around one day and made one I really liked with Apple Notes on the iPad. It looks like I eventually got it in Preview, but it doesn't look as clean as it did in Notes. I think I ended up printing it out and holding it up to my webcam, but it wasn't easy. I remember fighting with it a fair bit and I'm still not happy with the results. You'd think Apple Notes and Preview would be able to talk to each other enough to import directly.