This is definitely a huge market. Are you targeting React developers only? I've successfully used html2pdf in the past, but looking again at their Github, it seems there has been no update in the last three years.
I think SOC2 is a must to start engaging with companies. Most PDFs will have sensitive data, and not many companies will feel comfortable sending customer data to a 3rd party platform, so you need security measures and certifications.
Good luck!