Auto-fill PDF forms with AI using Autype, OpenAI, and Google Drive


Important: This workflow uses the [Autype](https://www.npmjs.com/package/n8n-nodes-autype) community node and requires a self-hosted n8n instance.

This workflow downloads a fillable PDF form from a URL, extracts all form field names and types using Autype, sends the field list to an AI Agent (OpenAI) together with applicant data, and uses the AI response to fill the form automatically. The AI is instructed to return raw JSON only, and a Code node validates the response before filling. The filled PDF is flattened (non-editable) and saved to Google Drive.

Who is this for?

Companies that regularly submit the same types of PDF form applications -- permit renewals, tax filings, compliance questionnaires, insurance claims, customs declarations, or any recurring government/regulatory paperwork. Instead of manually filling the same form fields every quarter or year, the AI reads the form structure and fills it with the correct data automatically.

Concrete example: A manufacturing company must renew its operating permit every year by submitting a multi-page PDF application to the local regulatory authority. The form asks for company name, registration number, address, contact person, business type, employee count, and more. With this workflow, the company stores its data once in the AI Agent prompt, and every renewal period they simply run the workflow to get a completed, flattened PDF ready for submission.

This also works as an additional skill for an AI agent. Instead of a manual trigger, connect the workflow to a webhook or chat trigger so an agent can call it when a user asks "fill out the permit renewal form for Q2 2026."

What this workflow does