Yang This workflow corresponds to n8n.io template #8565 — we link there as the canonical source.
This workflow follows the Form Trigger → Gmail recipe pattern — see all workflows that pair these two integrations.
The workflow JSON
Copy or download the full n8n JSON below. Paste it into a new n8n workflow, add your credentials, activate. Full import guide →
{
"id": "XFu45WOS6mzw0v8Y",
"meta": {
"templateCredsSetupCompleted": true
},
"name": "Extract Product Picks from Any Website with Dumpling AI and GPT-4o",
"tags": [],
"nodes": [
{
"id": "1eeaa578-6212-406b-b616-5f1defb3c052",
"name": "Receive Website URL",
"type": "n8n-nodes-base.formTrigger",
"position": [
-624,
96
],
"parameters": {
"options": {},
"formTitle": "Website",
"formFields": {
"values": [
{
"fieldLabel": "Website URL"
}
]
}
},
"typeVersion": 2.2
},
{
"id": "b175fbcb-280f-4b27-94c4-7334b6114bbb",
"name": "Crawl Website with Dumpling AI",
"type": "n8n-nodes-base.httpRequest",
"position": [
-400,
96
],
"parameters": {
"url": "https://app.dumplingai.com/api/v1/crawl ",
"method": "POST",
"options": {},
"jsonBody": "={\n \"url\": \"{{ $json['Website URL'] }}\",\n \"limit\": \"2\"\n} ",
"sendBody": true,
"specifyBody": "json",
"authentication": "genericCredentialType",
"genericAuthType": "httpHeaderAuth"
},
"credentials": {
"httpHeaderAuth": {
"name": "<your credential>"
}
},
"typeVersion": 4.2
},
{
"id": "ffafa7c3-da7a-4a23-b329-8aca3761c6d4",
"name": "Split Crawled Pages",
"type": "n8n-nodes-base.splitOut",
"position": [
-176,
96
],
"parameters": {
"options": {},
"fieldToSplitOut": "results"
},
"typeVersion": 1
},
{
"id": "18448414-70d6-4f3f-8159-0d896dc2c822",
"name": "Take Screenshot of Page",
"type": "n8n-nodes-base.httpRequest",
"position": [
48,
96
],
"parameters": {
"url": "https://app.dumplingai.com/api/v1/screenshot",
"method": "POST",
"options": {},
"jsonBody": "={\n \"url\": \"{{ $json.url }}\", \n \"fullPage\": \"false\"\n}",
"sendBody": true,
"specifyBody": "json",
"authentication": "genericCredentialType",
"genericAuthType": "httpHeaderAuth"
},
"credentials": {
"httpHeaderAuth": {
"name": "<your credential>"
}
},
"typeVersion": 4.2
},
{
"id": "7338ac22-a81f-4bf7-97eb-bb091840aa3e",
"name": "Analyze Screenshot with GPT-4o",
"type": "@n8n/n8n-nodes-langchain.openAi",
"position": [
272,
96
],
"parameters": {
"text": "=You are a shopping assistant that analyzes screenshots of website product listings.\n\nYour job is to extract details of products shown in the image and return the top 3 **best-value picks** in JSON format. Prioritize products that meet these criteria:\n\n1. **Free delivery** is available\n2. The **closest delivery date** compared to the current date Here is the current date: {{ $now.format('MMMM D, YYYY') }}\n\n3. The **lowest affordable price** among similar items\n\nUse the current date (provided in the input) to compare delivery timelines. Each product must include:\n\n- `name`: product name\n- `price`: total price shown\n- `reviews`: number of reviews (if visible)\n- `free_delivery_date`: exact free delivery date if shown, else skip the product\n\nIf fewer than 3 qualified products exist, return only those that match the criteria.\n\nYour output must be a JSON array of objects with this structure:\n\n```json\n[\n {\n \"name\": \"Product Name\",\n \"price\": \"$24.99\",\n \"reviews\": 1283,\n \"free_delivery_date\": \"September 15, 2025\"\n },\n ...\n]\n\nOutput Must only be 3 result or less, but never more",
"modelId": {
"__rl": true,
"mode": "list",
"value": "chatgpt-4o-latest",
"cachedResultName": "CHATGPT-4O-LATEST"
},
"options": {},
"resource": "image",
"imageUrls": "={{ $json.screenshotUrl }}",
"operation": "analyze"
},
"credentials": {
"openAiApi": {
"name": "<your credential>"
}
},
"typeVersion": 1.8
},
{
"id": "d33fb66f-5610-4575-ab45-489f5c893bee",
"name": "Parse and Extract Product Data",
"type": "n8n-nodes-base.code",
"position": [
496,
96
],
"parameters": {
"jsCode": "// Extract and merge JSON product data from markdown-formatted strings\n\nconst results = [];\n\nfor (const item of items) {\n const raw = item.json.content;\n\n // Remove the ```json and ``` wrappers\n const cleaned = raw.replace(/^```json\\n/, \"\").replace(/\\n```$/, \"\");\n\n try {\n const parsed = JSON.parse(cleaned);\n results.push(...parsed);\n } catch (e) {\n // Optional: you can skip or throw error depending on your use case\n throw new Error(\"Failed to parse product JSON: \" + e.message);\n }\n}\n\n// Return as individual items\nreturn results.map(product => ({ json: product }));\n"
},
"typeVersion": 2
},
{
"id": "493ff62b-b627-4421-bdef-cc62e5e89bc9",
"name": "Save Products to Google Sheet",
"type": "n8n-nodes-base.googleSheets",
"position": [
720,
96
],
"parameters": {
"columns": {
"value": {
"price": "={{ $json.price }}",
"reviews no.": "={{ $json.reviews }}",
"product name": "={{ $json.name }}",
"free_delivery_date": "={{ $json.free_delivery_date }}"
},
"schema": [
{
"id": "product name",
"type": "string",
"display": true,
"required": false,
"displayName": "product name",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "price",
"type": "string",
"display": true,
"required": false,
"displayName": "price",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "reviews no.",
"type": "string",
"display": true,
"removed": false,
"required": false,
"displayName": "reviews no.",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "free_delivery_date",
"type": "string",
"display": true,
"required": false,
"displayName": "free_delivery_date",
"defaultMatch": false,
"canBeUsedToMatch": true
}
],
"mappingMode": "defineBelow",
"matchingColumns": [],
"attemptToConvertTypes": false,
"convertFieldsToString": false
},
"options": {},
"operation": "append",
"sheetName": {
"__rl": true,
"mode": "list",
"value": "gid=0",
"cachedResultUrl": "https://docs.google.com/spreadsheets/d/1n6LGWBqzDrolzPUR3rhrOWd1YHXuUktnRnH7oU76IwY/edit#gid=0",
"cachedResultName": "Sheet1"
},
"documentId": {
"__rl": true,
"mode": "list",
"value": "",
"cachedResultUrl": "https://docs.google.com/spreadsheets/d/1n6LGWBqzDrolzPUR3rhrOWd1YHXuUktnRnH7oU76IwY/edit?usp=drivesdk",
"cachedResultName": "Product Analysis"
}
},
"credentials": {
"googleSheetsOAuth2Api": {
"name": "<your credential>"
}
},
"typeVersion": 4.7
},
{
"id": "708fce5d-d947-44b3-9028-e383eb209f3e",
"name": "Send Email with Product Link",
"type": "n8n-nodes-base.gmail",
"position": [
944,
96
],
"parameters": {
"sendTo": "user@example.com",
"message": "<!DOCTYPE html>\n<html>\n <body style=\"font-family: Arial, sans-serif; font-size: 16px; color: #333;\">\n <p>The product analysis is complete. Please check the full details using the link below:</p>\n <p>\n <a href=\"https://docs.google.com/spreadsheets/d/1n6LGWBqzDrolzPUR3rhrOWd1YHXuUktnRnH7oU76IwY/edit?gid=0#gid=0\" target=\"_blank\">\n View Product Analysis Sheet\n </a>\n </p>\n </body>\n</html>\n",
"options": {
"appendAttribution": false
},
"subject": "Your Product Comparison Report is Ready \u2013 Check the Results"
},
"credentials": {
"gmailOAuth2": {
"name": "<your credential>"
}
},
"executeOnce": true,
"typeVersion": 2.1
},
{
"id": "fe451299-95fe-4ad9-9836-1d18cf4089a0",
"name": "Sticky Note",
"type": "n8n-nodes-base.stickyNote",
"position": [
-688,
-432
],
"parameters": {
"width": 960,
"height": 544,
"content": "## \ud83d\udecd\ufe0f Smart Product Picker from Website Screenshot\n\nThis workflow lets you analyze product listing pages (e.g., Amazon) and pick the top 3 best-value items. You only need to submit the URL.\n\n### Here's what it does:\n1. Receive a website URL via a form\n2. Crawl it with Dumpling AI to extract result pages\n3. For each result:\n - Take a screenshot\n - Analyze with GPT-4o using image understanding\n - Extract product name, price, reviews, and free delivery date\n4. Clean and format the output using a code node\n5. Save the best picks into a Google Sheet\n6. Send an email with the link to view the results\n\n### Requirements:\n- Dumpling AI token stored in HTTP credentials\n- OpenAI key for GPT-4o model\n- Connected Google Sheet with columns:\n - `product name`, `price`, `reviews no.`, `free_delivery_date`\n\n> You can adapt this for other types of image-based analysis by changing the AI prompt.\n"
},
"typeVersion": 1
}
],
"active": false,
"settings": {
"executionOrder": "v1"
},
"versionId": "cfffcefa-7c7d-4512-8a22-d1827eb3fc92",
"connections": {
"Receive Website URL": {
"main": [
[
{
"node": "Crawl Website with Dumpling AI",
"type": "main",
"index": 0
}
]
]
},
"Split Crawled Pages": {
"main": [
[
{
"node": "Take Screenshot of Page",
"type": "main",
"index": 0
}
]
]
},
"Take Screenshot of Page": {
"main": [
[
{
"node": "Analyze Screenshot with GPT-4o",
"type": "main",
"index": 0
}
]
]
},
"Save Products to Google Sheet": {
"main": [
[
{
"node": "Send Email with Product Link",
"type": "main",
"index": 0
}
]
]
},
"Analyze Screenshot with GPT-4o": {
"main": [
[
{
"node": "Parse and Extract Product Data",
"type": "main",
"index": 0
}
]
]
},
"Crawl Website with Dumpling AI": {
"main": [
[
{
"node": "Split Crawled Pages",
"type": "main",
"index": 0
}
]
]
},
"Parse and Extract Product Data": {
"main": [
[
{
"node": "Save Products to Google Sheet",
"type": "main",
"index": 0
}
]
]
}
}
}
Credentials you'll need
Each integration node will prompt for credentials when you import. We strip credential IDs before publishing — you'll add your own.
gmailOAuth2googleSheetsOAuth2ApihttpHeaderAuthopenAiApi
Pro
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About this workflow
This workflow is for eCommerce researchers, affiliate marketers, and anyone who needs to compare product listings across sites like Amazon. It’s perfect for quickly identifying top product picks based on delivery speed, free shipping, and price.
Source: https://n8n.io/workflows/8565/ — original creator credit. Request a take-down →
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