AI Image Generation Workflow for Marketing Agencies (n8n + GPT-Image Generation API)

Want to run your marketing agency on autopilot using AI agents? This plug-and-play n8n workflow does exactly that.

Built for agencies, solopreneurs, and content creators, this workflow turns a simple campaign brief into scroll-stopping marketing images — without lifting a finger after setup.

💡 What It Does:

• 🧠 Uses GPT-4o to generate creative image prompts
• 🎨 Sends prompts to the OpenAI Image Generation API
• 📁 Converts base64 to PNG and stores visuals in Google Drive
• 🧍‍♂️ Collects human feedback via Gmail
• 🤖 Uses AI to analyze and revise based on feedback
• 📊 Stores everything in Google Sheets for easy access

All triggered by a clean, no-code form — perfect for clients or internal teams.

✅ Ideal For:

• Marketing agencies that want to scale content without more staff
• Founders building AI agent teams in n8n
• Creators automating social media post generation
• Anyone looking to create better, faster, smarter content workflows

🧰 What You’ll Get:

• The complete n8n workflow JSON file
• Instructions for setup (Google Drive, Gmail, OpenAI, etc.)
• Bonus: Campaign Brief Form Template
• Link to the step-by-step YouTube tutorial