Generate interactive MCQ quizzes from PDF textbooks with Google Gemini, UploadToURL and Gmail

This workflow transforms any textbook PDF into a fully interactive quiz — automatically. Users upload a PDF, choose difficulty & number of questions, and the system: - Extracts content - Generates MCQs using AI - Builds an interactive quiz webpage - Uploads it online - Sends a shareable link via email --- ✨ Key Features - 📥 Form-based PDF upload - 🤖 AI-generated MCQs (with explanations) - 🎯 Custom difficulty & question count - 🌐 Interactive HTML quiz (instant feedback) - 🔗 Public shareable link - 📧 Automated email delivery - ⚡ Fully automated workflow --- 🧩 Workflow Breakdown (Node-by-Node) --- 🟢 1. Get-Details (Form Trigger) What it does: Acts as the entry point of the workflow. How it works: - Displays a form to the user - Collects: - Name - Email - PDF file - Number of questions (10 / 20 / 30) - Difficulty (Easy / Medium / Hard) - Once submitted → triggers the workflow --- 🟣 2. Extract from File What it does: Extracts text from the uploaded PDF. How it works: - Takes the uploaded PDF (binary data) - Uses n8n’s built-in PDF parser - Converts PDF → plain text - Passes extracted text to the AI node --- 🔵 3. Generate-MCQ (AI Node) What it does: Converts textbook content into MCQs using AI. How it works: - Receives extracted text - Reads user inputs: - Number of questions - Difficulty level - Sends structured prompt to Google Gemini - Forces AI to return strict JSON format - Output includes: - Question - 4 options - Correct answer - Explanation --- 🟡 4. Template (Code Node) What it does: Builds a fully interactive quiz webpage. How it works: 1. JSON Parsing - Cleans AI response - Converts string → JavaScript object - Handles parsing errors safely 2. Personalization - Fetches user's name - Adds it to quiz header 3. HTML Generation - Creates styled quiz layout - Includes: - Questions - Multiple choice options - Answer + explanation 4. Interactivity (JavaScript) - User clicks an option → - Shows correct/incorrect - Displays explanation - Locks answer Output: - Generates a .html file --- 🟢 5. Upload a File (UploadToURL) ⭐ What it does: Uploads the generated quiz and creates a public shareable link. How it works: - Takes the HTML file from previous node - Uploads it to the internet - Instantly returns a public URL 🔥 Why this node is powerful: - No hosting required - No backend setup - Instant file sharing - Perfect for automation workflows 👉 UploadToURL - Turn Files into Shareable Links - Turn any file into a live URL - Share instantly with anyone --- 🟠 6. Send a Message (Gmail) What it does: Sends the quiz link directly to the user. How it works: - Uses email collected from form - Personalizes message with user name - Inserts public quiz URL - Sends a clean, clickable email Result: User receives their interactive quiz instantly 📧 --- 🎯 Use Cases - 📚 Students → Practice from textbooks - 👨‍🏫 Teachers → Generate quizzes instantly - 🧠 EdTech → Build learning tools - 📈 Creators → Convert content into interactive experiences