Sign PDF with plain JavaScript

Question

With WebCrypto API evolving and being supported by Chrome and Firefox, I would like to use it for digitally signing a PDF document. There is not much of literature around, b

Answer 1

It is technically possible to do this, in-fact it is one of the scenarios we had in mind when we made PKIjs (which is why there is this sample) - https://pkijs.org/examples/PDFexample.html

That said to do signing requires working with the PDF structure itself, which either requires a custom parser or modifications to an existing one (pdfjs for example).

Long story short, signing a PDF in browser will take a lot of work, it is something we are working on though.