n8n Seminar Teaching Pack Workflow: Qwen + Gotenberg + Gmail

Turn a research paper into a complete seminar teaching pack—automatically

This n8n Seminar Teaching Pack workflow collects a paper PDF via an n8n Form, extracts the text, uses an AI agent (Alibaba Cloud Qwen with schema validation) to generate a structured teaching pack and slide plan, renders it to a PDF with Gotenberg, and then emails the finished PDF to the requester via Gmail.

What this workflow does

• Receives input when a user submits an n8n Form: paper PDF, email address, session length, student level, and optional focus.
• Extracts and validates content: converts the uploaded PDF to text, and stops with a “no text” message if the file appears image-only or too short.
• Generates a seminar-ready teaching pack using a LangChain AI agent, producing a structured JSON output.
• Ensures schema correctness: the JSON is validated against a predefined schema and auto-fixed (fallback uses Mistral for JSON auto-fix).
• Creates print-ready deliverables: converts the validated teaching pack into print-ready HTML (A4 handout) and a slide-by-slide plan.
• Renders PDF via Gotenberg: posts the HTML to your self-hosted Gotenberg endpoint (default: http://gotenberg:3000/forms/chromium/convert/html).
• Sends the result by email: uses the Gmail node to attach and email the generated PDF to the submitted address, then displays a completion message in the form.

Use cases

• SaaS onboarding for education/learning tools: users upload a paper and instantly receive a seminar pack PDF.
• Automation engineers: a practical n8n template combining Form → AI → HTML → Gotenberg → Gmail.
• Researchers/teachers: request structured teaching materials without manual slide planning.

Technical details

• Nodes/logic: if, set, code, form, gmail, sticky note (plus an AI agent with schema validation).
• AI models: Alibaba Cloud Qwen for generation; Mistral used for fallback/JSON auto-fix.
• PDF rendering: Gotenberg via a configurable render URL.