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