{
"id": "YKZBEx4DTf0KGEBR",
"meta": {
"instanceId": "f5267db717c7383a3924a6083f6b9950be64cf36e2b4e9421d42eb2121922a14"
},
"name": "Image-Based Data Extraction API using Gemini AI",
"tags": [],
"nodes": [
{
"id": "e3448003-5c62-4da6-8fcc-6817915dcbb8",
"name": "Webhook",
"type": "n8n-nodes-base.webhook",
"position": [
40,
40
],
"webhookId": "18118afb-7fd2-47a5-a474-50813c5b20c8",
"parameters": {
"path": "data-extractor",
"options": [],
"responseMode": "responseNode"
},
"typeVersion": 2
},
{
"id": "3682c6bf-3442-4fba-ab6c-ae29e361ef93",
"name": "Respond to Webhook",
"type": "n8n-nodes-base.respondToWebhook",
"position": [
1180,
40
],
"parameters": {
"options": []
},
"typeVersion": 1.100000000000000088817841970012523233890533447265625
},
{
"id": "bfa352d0-68a9-4f33-be54-254a5df22664",
"name": "Get image from URL",
"type": "n8n-nodes-base.httpRequest",
"position": [
280,
40
],
"parameters": {
"url": "={{ $json.body.image_url }}",
"options": []
},
"typeVersion": 4.20000000000000017763568394002504646778106689453125
},
{
"id": "c6c8de12-08dc-42e8-9c0e-86e04c7cacc0",
"name": "Call Gemini API (Flash Lite) with Image",
"type": "n8n-nodes-base.httpRequest",
"position": [
760,
40
],
"parameters": {
"url": "=https:\/\/generativelanguage.googleapis.com\/v1beta\/models\/gemini-2.0-flash-lite:generateContent",
"method": "POST",
"options": [],
"jsonBody": "={\n \"contents\": [\n {\n \"role\": \"user\",\n \"parts\": [\n {\n \"inlineData\": {\n \"data\": \"{{$json.data1}}\",\n \"mimeType\": \"image\/jpeg\"\n }\n }\n ]\n },\n {\n \"role\": \"user\",\n \"parts\": [\n {\n \"text\": \"check this\"\n }\n ]\n }\n ],\n \"systemInstruction\": {\n \"role\": \"user\",\n \"parts\": [\n {\n \"text\": \"{{ $('Webhook').first().json.body.Requirement}}\"\n }\n ]\n },\n \"generationConfig\": {\n \"temperature\": 1,\n \"topK\": 40,\n \"topP\": 0.95,\n \"maxOutputTokens\": 8192,\n \"responseMimeType\": \"application\/json\",\n \"responseSchema\": {\n \"type\": \"object\",\n \"properties\": {{ $('Webhook').first().json.body.properties.toJsonString()}}\n }\n }\n}\n",
"sendBody": true,
"specifyBody": "json",
"authentication": "predefinedCredentialType",
"nodeCredentialType": "googlePalmApi"
},
"credentials": {
"googlePalmApi": {
"id": "MhMVz0OkKPSPX2Wn",
"name": "Gemini API Srinivasan Online"
}
},
"typeVersion": 4.20000000000000017763568394002504646778106689453125
},
{
"id": "06b0f807-aeba-44d6-bb1d-dfa1d50e1082",
"name": "Edit fields to output required data alone",
"type": "n8n-nodes-base.set",
"position": [
980,
40
],
"parameters": {
"options": [],
"assignments": {
"assignments": [
{
"id": "4a2f1343-4b5d-4de8-b04b-5640e0a38d27",
"name": "result",
"type": "string",
"value": "={{ $json.candidates[0].content.parts[0].text.parseJson()}}"
}
]
}
},
"typeVersion": 3.399999999999999911182158029987476766109466552734375
},
{
"id": "8c69dba2-f67c-4f8b-be18-02a414fd2ead",
"name": "Sticky Note",
"type": "n8n-nodes-base.stickyNote",
"position": [
20,
280
],
"parameters": {
"color": 5,
"width": 820,
"height": 420,
"content": "## Sample API Call (cURL) \n```\ncurl --request GET \\\n --url https:\/\/your_domain.com\/webhook\/data-extractor \\\n --data '{\n \"image_url\":\"https:\/\/www.immihelp.com\/nri\/images\/sample-pan-card-front.jpg\",\n \"Requirement\":\"extract the details from the image\",\n \"properties\": {\n \"PAN Number\": {\n \"type\": \"string\"\n },\n \"Name\": {\n \"type\": \"string\"\n },\n \"Date of Birth\": {\n \"type\": \"string\"\n },\n \"Valid\": {\n \"type\": \"boolean\"\n }\n }\n}'\n```"
},
"typeVersion": 1
},
{
"id": "8839f0d7-306f-4dc2-aca5-6ca529e1a2ff",
"name": "Sticky Note1",
"type": "n8n-nodes-base.stickyNote",
"position": [
20,
740
],
"parameters": {
"color": 5,
"width": 1240,
"height": 140,
"content": "## Sample Output\n```\n{\n \"result\": \"{\\\"Date of Birth\\\":\\\"23\/11\/1974\\\",\\\"Name\\\":\\\"RAHUL GUPTA\\\",\\\"PAN Number\\\":\\\"ABCDE1234F\\\",\\\"Valid\\\":true}\"\n}\n```"
},
"typeVersion": 1
},
{
"id": "df733e11-f194-4878-a514-47ddc9811281",
"name": "Sticky Note2",
"type": "n8n-nodes-base.stickyNote",
"position": [
40,
-520
],
"parameters": {
"width": 940,
"height": 440,
"content": "## Convert the workflow into an Endpoint\n\nThis n8n workflow provides a ready-to-use API endpoint for extracting structured data from images. The API takes an image URL as input, processes it using an AI-powered OCR model, and returns relevant extracted details in a structured JSON format.\n\n- The workflow converts the image to base64 before processing.\n- It utilizes an AI-powered model (Gemini API) for text extraction.\n- The output is formatted to include only the required fields.\n- You can customize the extraction criteria by modifying the request parameters.\n- Supports integration with various applications for automated data entry and processing.\n\nIt can be used for various use cases, such as:\n\n- Document OCR (ID cards, invoices, receipts)\n- Text Extraction from Images\n- Automated Form Processing\n- Business Card Data Extraction\n\nSimply send a GET request with an image URL, define the extraction requirements, and receive structured JSON data in response.\n\n"
},
"typeVersion": 1
},
{
"id": "aecf7331-6341-411e-8906-e42fc0ef264a",
"name": "Transform image to base64",
"type": "n8n-nodes-base.extractFromFile",
"position": [
520,
40
],
"parameters": {
"options": {
"encoding": "ascii"
},
"operation": "binaryToPropery",
"destinationKey": "data1"
},
"typeVersion": 1
}
],
"active": true,
"pinData": [],
"settings": {
"executionOrder": "v1"
},
"versionId": "b1fad586-998c-47ce-9921-e59527da029a",
"connections": {
"Webhook": {
"main": [
[
{
"node": "Get image from URL",
"type": "main",
"index": 0
}
]
]
},
"Get image from URL": {
"main": [
[
{
"node": "Transform image to base64",
"type": "main",
"index": 0
}
]
]
},
"Transform image to base64": {
"main": [
[
{
"node": "Call Gemini API (Flash Lite) with Image",
"type": "main",
"index": 0
}
]
]
},
"Call Gemini API (Flash Lite) with Image": {
"main": [
[
{
"node": "Edit fields to output required data alone",
"type": "main",
"index": 0
}
]
]
},
"Edit fields to output required data alone": {
"main": [
[
{
"node": "Respond to Webhook",
"type": "main",
"index": 0
}
]
]
}
}
}
