⚠️ Note: All sensitive credentials should be set via n8n Credentials or environment variables. Do not hardcode API keys…
⚠️ Note: All sensitive credentials should be set via n8n Credentials or environment variables. Do not hardcode API keys in nodes. Who’s it for Marketers, creators, and automation builders who want to generate UGC-style ad images automatically from a Google Sheet. Ideal for e‑commerce SKUs, agencies, or teams that need many variations quickly. What it does (Overview) This template turns a spreadsheet row into ad images ready for campaigns. Zone 1 — Create Ad Image**: Reads product rows, downloads image, analyzes it, generates prompts, appends results back into Google Sheet. Zone 2 — Create Image (Fal nano‑banana)**: Generates ad image variations, polls Fal.ai API until done, uploads to Drive, and updates sheet with output URLs. Requirements Fal.ai API key** (env: FAL\_KEY) Google Sheets / Google Drive** OAuth2 credentials OpenAI (Vision/Chat)** for image analysis A Google Sheet with columns for product and output Google Drive files set to Anyone with link → Viewer so APIs can fetch them How to set up Credentials: Add Google Sheets + Google Drive (OAuth2), Fal.ai (Header Auth with Authorization: Key {{\$env.FAL\_KEY}}), and OpenAI. Google Sheet: Create sheets with the following headers. Sheet: product product_id | product_name | product_image_url | product_description | campaign | brand_notes | constraints | num_variations | aspect_ratio | model_target | status Sheet: ad_image scene_ref | product_name | prompt | status | output_url Import the workflow: Use the provided JSON. Confirm node credentials resolve. Run: Start with Zone 0 to verify prompt-only flow, then test Zone 1 for image generation. Zone 1 — Create Ad Image (Prompt-only) Reads product row, normalizes Drive link, analyzes image, generates structured ad prompts, appends to ad_image sheet. Zone 2 — Create Image (Fal nano‑banana) Reads product row, converts Drive link, generates image(s) with Fal nano‑banana, polls until complete, uploads to Drive, updates sheet. Node settings (high‑level) Drive Link Parser (Set) {{ (() => { const u = $json.product || ''; const q = u.match(/[?&]id=([\-\w]{25,})/); const d = u.match(/\/d\/([\-\w]{25,})/); const any = u.match(/[\-\w]{25,}/); const id = q?.[1] || d?.[1] || (any ? any[0] : ''); return id ? 'https://drive.google.com/uc?export=view&id=' + id : ''; })() }} How to customize the workflow Adjust AI prompts to change ad style (luxury, cozy, techy). Change aspect ratio for TikTok/IG/Shorts (9:16, 1:1, 16:9). Extend Sheet schema for campaign labels, audiences, hashtags. Add distribution (Slack/LINE/Telegram) after Drive upload. Troubleshooting JSON parameter needs to be valid JSON** → Ensure expressions return objects, not strings. 403 on images** → Make Drive files public (Viewer) and convert links. Job never completes* → Check status_url, retry with -fast models or off‑peak times. Template metadata Uses:** Google Sheets, Google Drive, HTTP Request, Wait/If/Switch, Code, OpenAI Vision/Chat, Fal.ai models (nano‑banana) Visuals Workflow Diagram Example Product Image Product Image - nano Banana. An n8n automation workflow template by Jaruphat J..
Jaruphat J.
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