Masaki Go This workflow corresponds to n8n.io template #11244 — we link there as the canonical source.
This workflow follows the Googlegemini → HTTP Request recipe pattern — see all workflows that pair these two integrations.
The workflow JSON
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{
"meta": {
"templateCredsSetupCompleted": true
},
"nodes": [
{
"id": "4b498bde-7310-41c3-8de7-bb9ad947e4e2",
"name": "Sticky Note 1",
"type": "n8n-nodes-base.stickyNote",
"position": [
128,
-32
],
"parameters": {
"color": 7,
"width": 644,
"height": 376,
"content": "## 1. Data Processing\n1. Extract data/topic from LINE.\n2. **Gemini acts as Data Analyst**.\n3. Structures the data into a visual description (Charts, Icons, Layout)."
},
"typeVersion": 1
},
{
"id": "d30ac12e-af92-49b4-8f70-28f8b910082b",
"name": "Sticky Note 2",
"type": "n8n-nodes-base.stickyNote",
"position": [
816,
-32
],
"parameters": {
"color": 7,
"width": 1012,
"height": 376,
"content": "## 2. Infographic Rendering\n1. Submit to Nano Banana Pro.\n2. **Configured for 3:4 Aspect Ratio**.\n3. **Smart Loop:** Checks status every 5s until ready."
},
"typeVersion": 1
},
{
"id": "ed88f242-9e86-4933-aa6c-a8fbb335d847",
"name": "Sticky Note 3",
"type": "n8n-nodes-base.stickyNote",
"position": [
1856,
-32
],
"parameters": {
"color": 7,
"width": 860,
"height": 376,
"content": "## 3. Host & Deliver\n1. Download the generated Infographic.\n2. Upload to S3 (Public).\n3. Send the visual report back to LINE."
},
"typeVersion": 1
},
{
"id": "85af1e9b-e708-42de-997b-390ba1b473e8",
"name": "Main Description",
"type": "n8n-nodes-base.stickyNote",
"position": [
-192,
-32
],
"parameters": {
"width": 300,
"height": 528,
"content": "# AI Infographic Generator\n\nTurns complex data or topics into easy-to-understand **Infographics** automatically.\n\n### Key Features\n- **Role:** Data Visualization Expert.\n- **Format:** 3:4 Vertical Poster.\n- **Engine:** Nano Banana Pro.\n\n### How it works\n1. **Input:** User sends data (e.g., \"Japan Energy Mix: 20% Solar...\").\n2. **Design:** Gemini decides the best chart type (Pie, Bar, Flowchart).\n3. **Render:** Nano Banana creates the visual graphic.\n4. **Deliver:** Image sent via LINE."
},
"typeVersion": 1
},
{
"id": "adcafd67-eebf-4ef6-a953-0042eaf75dc2",
"name": "LINE Webhook",
"type": "n8n-nodes-base.webhook",
"position": [
144,
128
],
"parameters": {
"path": "infographic-v7158",
"options": {},
"httpMethod": "POST"
},
"typeVersion": 1
},
{
"id": "7bb61745-1574-41dc-94d8-0f9bb44747e1",
"name": "Extract Data",
"type": "n8n-nodes-base.code",
"position": [
320,
128
],
"parameters": {
"jsCode": "// LINE Webhook parsing\nconst body = items[0].json.body;\n\nif (!body.events || !Array.isArray(body.events) || !body.events[0]) {\n throw new Error(\"No LINE events found\");\n}\n\nconst event = body.events[0];\n\nreturn [\n {\n json: {\n replyToken: event.replyToken,\n userId: event.source.userId,\n message: event.message.text,\n timestamp: event.timestamp\n }\n }\n];"
},
"typeVersion": 1
},
{
"id": "6981c521-0750-4d7d-b0df-6b77448a4e1f",
"name": "Optimize Prompt (Data Vis)",
"type": "@n8n/n8n-nodes-langchain.googleGemini",
"position": [
496,
128
],
"parameters": {
"modelId": {
"__rl": true,
"mode": "list",
"value": "models/gemini-2.0-flash-lite",
"cachedResultName": "models/gemini-2.0-flash-lite"
},
"options": {},
"messages": {
"values": [
{
"role": "system",
"content": "\"You are an expert Information Designer and Data Visualization Specialist.\\nThe user will send you a topic or a set of data points.\\nYour goal is to write a detailed prompt for Nano Banana Pro to generate a Professional INFOGRAPHIC (3:4 aspect ratio).\\n\\nIMPORTANT RULES:\\n1. Analyze the data/topic. Choose the best visualization method (Pie Chart, Bar Graph, Process Flow, or Timeline).\\n2. Layout: Describe a clean, structured layout with a clear Title Header, Data Sections, and Icons.\\n3. Visual Style: Modern, clean, vector-style flat design or 3D infographic style. Use a professional color palette suitable for the topic.\\n4. Text: Instruct the AI to render the key numbers and labels clearly.\\n5. Output ONLY the English prompt text, nothing else. NO DOUBLE QUOTES.\""
},
{
"content": "={{ $json.message }}"
}
]
},
"jsonOutput": true
},
"typeVersion": 1
},
{
"id": "1b9e4427-db85-4905-ab67-c6440c8a16aa",
"name": "Parse Gemini Response",
"type": "n8n-nodes-base.code",
"position": [
848,
128
],
"parameters": {
"jsCode": "const response = items[0].json;\nlet promptText = \"\";\nlet text = \"\";\n\nif (response.candidates && response.candidates[0] && response.candidates[0].content && response.candidates[0].content.parts) {\n text = response.candidates[0].content.parts[0].text;\n} \nelse if (response.content && response.content.parts && response.content.parts[0]) {\n text = response.content.parts[0].text;\n}\nelse if (response.output) {\n text = response.output;\n}\n\nif (text) {\n text = text.replace(/```json/g, \"\").replace(/```/g, \"\").trim();\n try {\n const parsed = JSON.parse(text);\n if (Array.isArray(parsed) && parsed.length > 0) {\n const firstItem = parsed[0];\n if (typeof firstItem === 'object' && firstItem !== null && firstItem.prompt) {\n promptText = firstItem.prompt; \n } else if (typeof firstItem === 'string') {\n promptText = firstItem;\n } else {\n promptText = JSON.stringify(firstItem);\n }\n } else if (typeof parsed === 'object' && parsed !== null) {\n if (parsed.prompt) { promptText = parsed.prompt; } else { promptText = JSON.stringify(parsed); }\n } else {\n promptText = text; \n }\n } catch (e) {\n promptText = text.replace(/^\\[|\\]$/g, '').replace(/^[\\\"']|[\\\"']$/g, '').replace(/\\\\n/g, '').trim();\n }\n}\n\nif (!promptText || typeof promptText !== 'string') { promptText = String(promptText || \"\"); }\npromptText = promptText.replace(/\\\"/g, \"'\").replace(/\\n/g, \" \").replace(/\\r/g, \" \").replace(/\\s+/g, \" \").trim();\n\nreturn [{\n json: {\n prompt: promptText,\n userId: $('Extract Data').item.json.userId || \"unknown_user\",\n taskId: response.taskId || null\n }\n}];"
},
"typeVersion": 2
},
{
"id": "eecb8e0c-3dc9-4847-bbdb-84d3d106ec0b",
"name": "Submit to Nano Banana Pro",
"type": "n8n-nodes-base.httpRequest",
"position": [
1056,
128
],
"parameters": {
"url": "https://api.kie.ai/api/v1/jobs/createTask",
"method": "POST",
"options": {},
"jsonBody": "={\n \"model\": \"nano-banana-pro\",\n \"input\": {\n \"prompt\": \"{{ $json.prompt }}\",\n \"aspect_ratio\": \"3:4\",\n \"resolution\": \"2K\",\n \"output_format\": \"png\"\n }\n}",
"sendBody": true,
"sendHeaders": true,
"specifyBody": "json",
"authentication": "genericCredentialType",
"genericAuthType": "httpHeaderAuth",
"headerParameters": {
"parameters": [
{
"name": "Content-Type",
"value": "application/json"
}
]
}
},
"typeVersion": 4.1
},
{
"id": "b253a76e-133a-417d-a76b-16c0df8abd1c",
"name": "Wait",
"type": "n8n-nodes-base.wait",
"position": [
1248,
128
],
"parameters": {},
"typeVersion": 1.1
},
{
"id": "2dc495ab-5754-49f0-8dae-127aaa153736",
"name": "Check Job Status",
"type": "n8n-nodes-base.httpRequest",
"position": [
1456,
128
],
"parameters": {
"url": "https://api.kie.ai/api/v1/jobs/recordInfo",
"options": {},
"sendQuery": true,
"sendHeaders": true,
"authentication": "genericCredentialType",
"genericAuthType": "httpHeaderAuth",
"queryParameters": {
"parameters": [
{
"name": "taskId",
"value": "={{ $json.data.taskId }}"
},
{
"name": "recordId",
"value": "={{ $json.data.recordId }}"
}
]
},
"headerParameters": {
"parameters": [
{}
]
}
},
"typeVersion": 4.2
},
{
"id": "b3ec2fb1-e111-40c7-a7b1-bc76abaadba7",
"name": "Is Ready?",
"type": "n8n-nodes-base.if",
"position": [
1648,
128
],
"parameters": {
"options": {},
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "2eb42234-291b-4803-b446-87282037f82b",
"operator": {
"name": "filter-state",
"type": "string",
"operation": "equals"
},
"leftValue": "={{ $json.data.state }}",
"rightValue": "success"
}
]
}
},
"typeVersion": 2.2
},
{
"id": "b22257b2-7915-42e5-8ac7-2ce7c560896e",
"name": "Parse Result",
"type": "n8n-nodes-base.code",
"position": [
1904,
112
],
"parameters": {
"jsCode": "// Parse response and extract image URL\nconst response = items[0].json;\nconst data = Array.isArray(response) ? response[0] : response;\n\n// Asumimos que si llegamos aqui es porque el estado es success (verificado por el nodo IF)\nif (data.data && data.data.resultJson) {\n try {\n const resultData = JSON.parse(data.data.resultJson);\n const resultUrls = resultData.resultUrls || [];\n if (resultUrls.length > 0) {\n return [{\n json: {\n imageUrl: resultUrls[0],\n taskId: data.data.taskId,\n status: 'completed'\n }\n }];\n }\n } catch (e) {\n throw new Error('Failed to parse resultJson');\n }\n}\n\nthrow new Error('No image found in response');"
},
"typeVersion": 1
},
{
"id": "c8a1d37a-1a8e-4baa-be93-aaf1eb309896",
"name": "Download Image",
"type": "n8n-nodes-base.httpRequest",
"position": [
2112,
112
],
"parameters": {
"url": "={{ $json.imageUrl }}",
"options": {
"response": {
"response": {
"responseFormat": "file"
}
}
}
},
"typeVersion": 4.1
},
{
"id": "a25e24b7-7bba-41d5-96bc-93ab6e646dff",
"name": "Upload to S3",
"type": "n8n-nodes-base.awsS3",
"position": [
2304,
112
],
"parameters": {
"fileName": "={{ 'infographic-' + Date.now() + '.png' }}",
"operation": "upload",
"bucketName": "banners-bot-v7158",
"additionalFields": {}
},
"typeVersion": 2
},
{
"id": "57501e89-72ba-4ae5-8264-0ddefb5343cf",
"name": "Send Image to LINE",
"type": "n8n-nodes-base.httpRequest",
"position": [
2512,
112
],
"parameters": {
"url": "https://api.line.me/v2/bot/message/reply",
"method": "POST",
"options": {},
"jsonBody": "={\n \"replyToken\": \"{{ $('LINE Webhook').item.json.replyToken }}\",\n \"messages\": [\n {\n \"type\": \"image\",\n \"originalContentUrl\": \"{{ $('Upload to S3').item.json.Location }}\",\n \"previewImageUrl\": \"{{ $('Upload to S3').item.json.Location }}\"\n }\n ]\n}",
"sendBody": true,
"sendHeaders": true,
"specifyBody": "json",
"authentication": "genericCredentialType",
"genericAuthType": "httpHeaderAuth",
"headerParameters": {
"parameters": [
{
"name": "Content-Type",
"value": "application/json"
}
]
}
},
"typeVersion": 4.2
}
],
"connections": {
"Wait": {
"main": [
[
{
"node": "Check Job Status",
"type": "main",
"index": 0
}
]
]
},
"Is Ready?": {
"main": [
[
{
"node": "Parse Result",
"type": "main",
"index": 0
}
],
[
{
"node": "Wait",
"type": "main",
"index": 0
}
]
]
},
"Extract Data": {
"main": [
[
{
"node": "Optimize Prompt (Data Vis)",
"type": "main",
"index": 0
}
]
]
},
"LINE Webhook": {
"main": [
[
{
"node": "Extract Data",
"type": "main",
"index": 0
}
]
]
},
"Parse Result": {
"main": [
[
{
"node": "Download Image",
"type": "main",
"index": 0
}
]
]
},
"Upload to S3": {
"main": [
[
{
"node": "Send Image to LINE",
"type": "main",
"index": 0
}
]
]
},
"Download Image": {
"main": [
[
{
"node": "Upload to S3",
"type": "main",
"index": 0
}
]
]
},
"Check Job Status": {
"main": [
[
{
"node": "Is Ready?",
"type": "main",
"index": 0
}
]
]
},
"Parse Gemini Response": {
"main": [
[
{
"node": "Submit to Nano Banana Pro",
"type": "main",
"index": 0
}
]
]
},
"Submit to Nano Banana Pro": {
"main": [
[
{
"node": "Wait",
"type": "main",
"index": 0
}
]
]
},
"Optimize Prompt (Data Vis)": {
"main": [
[
{
"node": "Parse Gemini Response",
"type": "main",
"index": 0
}
]
]
}
}
}
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About this workflow
This workflow turns complex data or topics sent via LINE into beautiful, easy-to-understand Infographics.
Source: https://n8n.io/workflows/11244/ — original creator credit. Request a take-down →
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