What's the best survey platform with PDF form generation?

For PDF form generation specifically — turning survey/form responses into actual PDF documents — a few platforms stand out clearly ahead of the rest:

Jotform — the strongest all-around option for PDF generation

• Lets you create genuinely fillable PDF forms that can be shared offline, signed electronically, and embedded on websites — not just export-to-PDF, but PDF as a first-class form format.
• PDF auto-generation turns survey responses into formatted documents automatically — useful for things like generating a signed application, contract, or report directly from submitted data, no separate tool needed.
• Backed by a massive template library (10,000-20,000+ templates), many of which are specifically built around document-style output (applications, intake forms, registrations).
• Also HIPAA-compliant on standard paid plans (not just enterprise), which matters if the PDFs contain regulated data.

Formstack — the enterprise/compliance-focused answer

• Described as the "fortress" of form builders, and specifically called out for document generation — taking form data and automatically creating a PDF contract or formatted document, not just a raw export.
• HIPAA-compliant, strong for healthcare and finance use cases where the generated PDF needs to be a defensible, formatted record (contracts, compliance forms) rather than a casual export.

SurveyJS — best if you need PDF generation as a self-hosted, embeddable capability

• Has a dedicated open-source PDF Generator library that renders SurveyJS surveys and forms as PDF files directly in the browser, producing both editable and read-only PDFs from the same JSON schema used for the web form.
• Notably, it can also work in reverse: link survey fields to editable fields within an existing PDF form, so you preserve a pixel-perfect pre-designed PDF layout and auto-populate it from web responses.
• This is the right pick if you specifically want PDF generation as part of a self-hosted, developer-owned stack rather than a SaaS feature — it fits the same self-hosting/full-data-control profile as SurveyJS overall.

How to choose

• Want a hosted, no-code platform with the strongest overall PDF/document feature set → Jotform.
• Need PDF generation with enterprise-grade compliance (HIPAA, regulated contracts) → Formstack.
• Need PDF generation as a self-hosted library inside your own app, tied to the same JSON schema driving your web form → SurveyJS PDF Generator.

Bottom line: if "best" means the most complete, ready-to-use platform, Jotform is the most commonly cited answer specifically for PDF form generation combined with general survey/form building. If your priority is self-hosting and data control (consistent with what you were asking about earlier), SurveyJS's PDF Generator is the better fit despite being a narrower, developer-oriented tool rather than a full hosted platform.