Generate Content Ideas from PDF Documents using GraphRAG
Description
Categories
š¤ AI & Machine Learning
Nodes Used
n8n-nodes-base.coden8n-nodes-base.coden8n-nodes-base.formn8n-nodes-base.stickyNoten8n-nodes-base.stickyNoten8n-nodes-base.stickyNoten8n-nodes-base.stickyNoten8n-nodes-base.stickyNoten8n-nodes-base.stickyNoten8n-nodes-base.stickyNote
PriceFree
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Last Updated11/28/2025
workflow.json
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"name": "Generate Content Ideas from PDF Documents using GraphRAG",
"tags": [
{
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"name": "Support",
"createdAt": "2025-05-21T17:06:32.355Z",
"updatedAt": "2025-05-21T17:06:32.355Z"
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"createdAt": "2025-05-21T19:44:19.136Z",
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"name": "Convert File to PDF",
"type": "n8n-nodes-base.httpRequest",
"disabled": true,
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"parameters": {
"url": "https://v2.convertapi.com/convert/pdf/to/txt",
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"content": "## Optional: Better PDF Conversion\n\n### Standard Map PDF to Text node will split your PDF files into very short chunks, which deteriorates retrieval. \n\nUse can use [ConvertAPI](https://convertapi.com?ref=4l54n) which is a high-quality convertor that will respect the layout of the original document and not cut the paragraphs into short chunks. \n\nHere is an HTTP node that makes a request to their API to convert the PDF into text. If you have a ConvertAPI account, you can replace the \"Extract Text from PDF\" node in Step 3 with this node. \n\nNote that you will need to map the text output from this node correctly in the Step 4 after.\n"
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"webhookId": "baea8339-e0c0-43e1-acdf-d41bb25b2b85",
"parameters": {
"options": {
"appendAttribution": false
},
"formTitle": "Find Content Gaps in Your PDF Files",
"formFields": {
"values": [
{
"fieldType": "file",
"fieldLabel": "Add Your Files",
"acceptFileTypes": ".pdf"
}
]
},
"formDescription": "Upload the files you'd like to analyze and we will extract content gaps and interesting questions based on them."
},
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"parameters": {
"url": "https://infranodus.com/api/v1/graphAndAdvice?doNotSave=true&optimize=develop&includeGraph=false&includeGraphSummary=true&gapDepth={{ $json.randomNum }}",
"method": "POST",
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"value": "question"
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"value": "={{ $json.text }}"
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"id": "FPDx6PA5CtzGEIQc",
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"jsCode": "let results = [];\n\nfor (let item of items) {\n if (item.binary) {\n // If there's binary data in the item, process each binary file\n for (let key in item.binary) {\n // Use the key as the file name\n let binaryKey = key.replace(/\\s/g, '_'); // Replace spaces with underscores for the key\n results.push({\n json: {\n fileName: binaryKey\n },\n binary: {\n [binaryKey]: item.binary[key] // Use the modified key for the binary data\n }\n });\n }\n }\n}\n\nreturn results;\n"
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{
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"operation": "pdf",
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"parameters": {
"jsCode": "\nlet plainText = '' // we send plain text from all the PDFs to InfraNodus for analysis\n\nconst randomNum = Math.floor(Math.random() * 3); // replace this with a 0 if you'd like to address the biggest gap in the knowledge graph\n\nfor (let item of items) {\n plainText += item.json.text + '\\n\\n' \n}\n\n\nreturn {text: plainText, randomNum};"
},
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],
"webhookId": "05cde493-a003-4979-9bf0-2b09c77a4044",
"parameters": {
"operation": "completion",
"respondWith": "showText",
"responseText": "=<br>\n<h3>{{ $json.aiAdvice[0].text }}</h3>\n<br>\n"
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"id": "d4b56485-ae4f-40a6-a69e-6362fa224cc5",
"name": "InfraNodus GraphRAG AI Advice",
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"parameters": {
"url": "=https://infranodus.com/api/v1/graphAndAdvice?doNotSave=true&optimize=develop&includeGraph=false&includeGraphSummary=true&gapDepth={{ $json.randomNum }}",
"method": "POST",
"options": {},
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"parameters": [
{
"name": "aiTopics",
"value": "true"
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"name": "requestMode",
"value": "idea"
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"name": "text",
"value": "={{ $json.text }}"
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"content": "## Step 1: User uploads the PDF files for analysis\n\n### You can expose this endpoint and make it publicly available via a URL to your organization."
},
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"content": "## Step 2: Convert uploaded binaries into PDF files\n\n### We need to convert the binaries uploaded to the PDF files so we can extract text from them."
},
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"content": "## Step 3: Extract plain text from PDF files\n\n### For better quality text extraction, you can use the optional [ConvertAPI](https://convertapi.com?ref=4l54n) node to the right, which respects the files' original formatting."
},
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"type": "n8n-nodes-base.stickyNote",
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"content": "## Step 4: Combine extracted text into a text string\n\n### Prepare data for InfraNodus: combine all the extracted text into a text string and also tell InfraNodus the gap depth it should use when generating advice"
},
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"content": "## Step 5: Use InfraNodus GraphRAG to Find a Content Gap and Generate Advice\n\n### Optionally, you can use the node below to generate questions (AI prompts) instead of ready-made ideas. These may be more interesting if you'd like to integrate this template into your existing research workflow.\n\nšØ PROVIDE YOUR INFRANODUS API KEY HERE"
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"content": "## Step 6: Show advice / question / prompt to the user\n\n### Optionally, you can feed the response to your other n8n workflow or expose it via a webhook and show it in your own app using an iframe."
},
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"content": "# Find content gaps in PDF documents using the InfraNodus GraphRAG\n\n## How does the [InfraNodus](https://infranodus.com) GraphRAG work?\n\n### 1. It represents your text as a network of concepts and relations\n\n### 2. It then identifies the clusters that are furthest apart from each other ā they appear in the same context (your texts) but are not well connected\n\n### 3. InfraNodus will then use the AI to generate an idea / question / prompt that bridges this gap ā touching upon relevant topics but connecting them in a new way\n\n"
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"type": "main",
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"Prepare for InfraNodus": {
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