signature_pad

These open source solutions aren’t explicitly for PDF signing but they can in theory be combined with PDF.js https://github.com/brinley/jSignature https://github.com/szimek/signature_pad

There is currently no signature support on the online forms, but that's something I would like to add soon. When generating a PDF via an API request, you can add an image field, and upload your user's signature as an image. You could also create a faux signature by using a text field with a handwriting font (The Dancing Script [1] font is available.) This is a tool for developers to fill out PDFs, so in your own application you could use something like the signature_pad library [2], and then pass the signature images to FormAPI. [1] https://fonts.google.com/specimen/Dancing+Script [2] https://github.com/szimek/signature_pad

Thanks! Totally agree, there's a lot of room for improvement on the landing page. That use case sounds right. I've mainly been thinking about tax and immigration forms, or filling out financial and legal documents, etc. There's no special field type for signatures at the moment, but you can upload a signature image, or use a text field with a handwriting font (Dancing Script [1]). I will probably add the signature_pad [2] library to the online forms in the near future, and will add a special "signature" type. There might also be a new flow where you can request a signature via the API, and we'll send an email to the person who needs to sign the document. (I actually just need to get a few more customers first, so that I'm building something that people need.) [1] https://fonts.google.com/specimen/Dancing+Script [2] https://github.com/szim