{ "nodes": [ { "id": "85702921-bc6d-4f5c-a1d5-429fb0b969ac", "name": "When clicking 'Execute workflow'", "type": "n8n-nodes-base.manualTrigger", "position": [ -288, 208 ], "parameters": {}, "typeVersion": 1 }, { "id": "0455ad8a-32bd-4c3f-a944-02a4c9a60f74", "name": "OpenAI Chat Model", "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi", "position": [ 1808, 720 ], "parameters": { "model": { "__rl": true, "mode": "list", "value": "gpt-4.1-mini" }, "options": {} }, "credentials": { "openAiApi": { "name": "" } }, "typeVersion": 1.2 }, { "id": "ec4fa0f9-5f94-4490-8404-0666e655f4bd", "name": "Convert to File", "type": "n8n-nodes-base.convertToFile", "position": [ 1312, 224 ], "parameters": { "options": { "fileName": "={{ $('Save base64').item.json.name }}" }, "operation": "toBinary", "sourceProperty": "data" }, "typeVersion": 1.1 }, { "id": "09323ac4-58c7-4260-a11b-9d06f133b29f", "name": "Switch Mime Type", "type": "n8n-nodes-base.switch", "position": [ 880, 400 ], "parameters": { "rules": { "values": [ { "outputKey": "image", "conditions": { "options": { "version": 2, "leftValue": "", "caseSensitive": true, "typeValidation": "strict" }, "combinator": "and", "conditions": [ { "id": "fcf37995-e2b2-466d-a8a8-aad25380f329", "operator": { "type": "string", "operation": "startsWith" }, "leftValue": "={{ $binary.data.mimeType }}", "rightValue": "image/" } ] }, "renameOutput": true }, { "outputKey": "pdf", "conditions": { "options": { "version": 2, "leftValue": "", "caseSensitive": true, "typeValidation": "strict" }, "combinator": "and", "conditions": [ { "id": "0853b815-fd5d-413d-9f0e-0d2fc8dbdade", "operator": { "type": "string", "operation": "equals" }, "leftValue": "={{ $binary.data.mimeType }}", "rightValue": "application/pdf" } ] }, "renameOutput": true } ] }, "options": { "fallbackOutput": "extra" } }, "typeVersion": 3.2 }, { "id": "f15cfb3e-630b-47da-8318-dc58289f9e07", "name": "Loop Over Items", "type": "n8n-nodes-base.splitInBatches", "position": [ 304, 384 ], "parameters": { "options": {} }, "typeVersion": 3 }, { "id": "33e127d5-6a47-4637-bcb2-d135a9dae63b", "name": "Set file identity", "type": "n8n-nodes-base.set", "position": [ 528, 400 ], "parameters": { "options": {}, "assignments": { "assignments": [ { "id": "f021928e-16df-4280-9e52-8c671e7e36d5", "name": "id", "type": "string", "value": "={{ $json.id }}" }, { "id": "6cdca709-1b00-4970-b9bb-9c2184600a5e", "name": "name", "type": "string", "value": "={{ $json.name }}" } ] }, "includeOtherFields": true }, "typeVersion": 3.4 }, { "id": "89803795-7f66-495a-98fc-5024627a0242", "name": "Save base64", "type": "n8n-nodes-base.extractFromFile", "position": [ 704, 400 ], "parameters": { "options": { "keepSource": "both" }, "operation": "binaryToPropery" }, "typeVersion": 1 }, { "id": "2a32007a-337c-455c-9c96-52307e1efcc9", "name": "Re-set base64", "type": "n8n-nodes-base.set", "position": [ 1152, 224 ], "parameters": { "options": {}, "assignments": { "assignments": [ { "id": "efee376a-ed86-4895-8fc5-df2ff3b08a80", "name": "data", "type": "string", "value": "={{ $('Save base64').item.json.data }}" } ] } }, "typeVersion": 3.4 }, { "id": "7424c2eb-c3c3-46ff-82e4-2404f5cfc7fe", "name": "Check for new invoices", "type": "n8n-nodes-base.googleDriveTrigger", "position": [ -288, 384 ], "parameters": { "event": "fileCreated", "options": {}, "pollTimes": { "item": [ { "mode": "everyMinute" } ] }, "triggerOn": "specificFolder", "folderToWatch": { "__rl": true, "mode": "list", "value": "GOOGLE_DRIVE_FOLDER_ID_001", "cachedResultUrl": "https://drive.google.com/drive/folders/GOOGLE_DRIVE_FOLDER_ID_001", "cachedResultName": "Scanned invoices" } }, "credentials": { "googleDriveOAuth2Api": { "name": "" } }, "typeVersion": 1 }, { "id": "a6839ddd-aacc-405b-a145-dd2152f91f6e", "name": "Download file", "type": "n8n-nodes-base.googleDrive", "position": [ 128, 384 ], "parameters": { "fileId": { "__rl": true, "mode": "id", "value": "={{ $json.id }}" }, "options": {}, "operation": "download" }, "credentials": { "googleDriveOAuth2Api": { "name": "" } }, "typeVersion": 3 }, { "id": "17d99786-f1e9-46e8-85a5-64d5d4ed65ad", "name": "Fetch 50 docs", "type": "n8n-nodes-base.googleDrive", "position": [ -64, 208 ], "parameters": { "filter": { "folderId": { "__rl": true, "mode": "list", "value": "GOOGLE_DRIVE_FOLDER_ID_001", "cachedResultUrl": "https://drive.google.com/drive/folders/GOOGLE_DRIVE_FOLDER_ID_001", "cachedResultName": "Scanned invoices" } }, "options": {}, "resource": "fileFolder" }, "credentials": { "googleDriveOAuth2Api": { "name": "" } }, "typeVersion": 3 }, { "id": "3ad34319-3715-4ff0-bf90-bfdd0f3a27e8", "name": "Extract from File", "type": "n8n-nodes-base.extractFromFile", "position": [ 1152, 480 ], "parameters": { "options": {}, "operation": "pdf" }, "typeVersion": 1 }, { "id": "a7daca53-ed48-4af9-8c27-c18e4b5710e2", "name": "Identify CamScanner", "type": "n8n-nodes-base.if", "position": [ 1312, 480 ], "parameters": { "options": {}, "conditions": { "options": { "version": 2, "leftValue": "", "caseSensitive": true, "typeValidation": "strict" }, "combinator": "or", "conditions": [ { "id": "d074d65f-65d4-46b1-baa6-306a2ca1e827", "operator": { "name": "filter.operator.equals", "type": "string", "operation": "equals" }, "leftValue": "={{ $json.info.Author }}", "rightValue": "CamScanner" }, { "id": "3d23a529-7e71-489d-9997-0d3f22bc0927", "operator": { "type": "string", "operation": "startsWith" }, "leftValue": "={{ $json.text }}", "rightValue": "CamScanner" } ] } }, "typeVersion": 2.2 }, { "id": "a4df0641-b633-4ba4-bb43-31cacac9824b", "name": "Analyze Image", "type": "n8n-nodes-base.httpRequest", "maxTries": 2, "position": [ 1504, 304 ], "parameters": { "url": "https://api.ocr.space/parse/image", "method": "POST", "options": {}, "sendBody": true, "contentType": "multipart-form-data", "authentication": "genericCredentialType", "bodyParameters": { "parameters": [ { "name": "file", "parameterType": "formBinaryData", "inputDataFieldName": "data" }, { "name": "OCREngine", "value": "2" }, { "name": "detectOrientation", "value": "true" } ] }, "genericAuthType": "httpHeaderAuth" }, "credentials": { "httpHeaderAuth": { "name": "" } }, "retryOnFail": true, "typeVersion": 4.2 }, { "id": "4ac1d408-c1e7-4b8c-9be8-53612b0addfe", "name": "Edit Fields", "type": "n8n-nodes-base.set", "position": [ 1664, 304 ], "parameters": { "options": {}, "assignments": { "assignments": [ { "id": "32ec54fd-db5a-4bc6-bbe4-9264d3a72c56", "name": "text", "type": "string", "value": "={{ $json.ParsedResults[0].ParsedText }}" } ] } }, "typeVersion": 3.4 }, { "id": "332f6947-3460-4dc6-984a-982a3829b121", "name": "Information Extractor", "type": "@n8n/n8n-nodes-langchain.informationExtractor", "position": [ 1856, 496 ], "parameters": { "text": "={{ $json.text }}", "options": {}, "attributes": { "attributes": [ { "name": "company name", "description": "The company which produced the invoice" }, { "name": "total", "type": "number", "description": "The total price of the invoice" }, { "name": "currency", "description": "The currency of the total sum as letters code or symbol" }, { "name": "date", "description": "the date in which the invoice was generated" }, { "name": "invoice number", "description": "a unique id of the invoice, can be a mixture of text and numbers" } ] } }, "typeVersion": 1.2 }, { "id": "57343929-604b-4b2f-bbc4-3c601033538d", "name": "Append row in sheet", "type": "n8n-nodes-base.googleSheets", "position": [ 2176, 496 ], "parameters": { "columns": { "value": { "id": "={{ $('Set file identity').last().json.id }}", "Scan": "=https://drive.google.com/file/d/{{ $('Set file identity').last().json.id }}/view?usp=drive_link", "date": "={{ $json.output.date }}", "total": "={{ $json.output.total }}", "currency": "={{ $json.output.currency }}", "scan name": "={{ $('Set file identity').last().json.name }}", "company name": "={{ $json.output['company name'] }}", "invoice number": "={{ $json.output['invoice number'] }}" }, "schema": [ { "id": "id", "type": "string", "display": true, "removed": false, "required": false, "displayName": "id", "defaultMatch": true, "canBeUsedToMatch": true }, { "id": "date", "type": "string", "display": true, "required": false, "displayName": "date", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "company name", "type": "string", "display": true, "required": false, "displayName": "company name", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "total", "type": "string", "display": true, "required": false, "displayName": "total", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "currency", "type": "string", "display": true, "required": false, "displayName": "currency", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "invoice number", "type": "string", "display": true, "required": false, "displayName": "invoice number", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "Scan", "type": "string", "display": true, "removed": false, "required": false, "displayName": "Scan", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "scan name", "type": "string", "display": true, "removed": false, "required": false, "displayName": "scan name", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "Context", "type": "string", "display": true, "removed": true, "required": false, "displayName": "Context", "defaultMatch": false, "canBeUsedToMatch": true } ], "mappingMode": "defineBelow", "matchingColumns": [ "id" ], "attemptToConvertTypes": false, "convertFieldsToString": false }, "options": {}, "operation": "append", "sheetName": { "__rl": true, "mode": "list", "value": "gid=0", "cachedResultUrl": "https://docs.google.com/spreadsheets/d/GOOGLE_SHEETS_DOCUMENT_ID_001/edit#gid=0", "cachedResultName": "Sheet1" }, "documentId": { "__rl": true, "mode": "list", "value": "GOOGLE_SHEETS_DOCUMENT_ID_001", "cachedResultUrl": "https://docs.google.com/spreadsheets/d/GOOGLE_SHEETS_DOCUMENT_ID_001/edit?usp=drivesdk", "cachedResultName": "Expenses from scanned invoices" } }, "credentials": { "googleSheetsOAuth2Api": { "name": "" } }, "typeVersion": 4.6 }, { "id": "96efa1fd-74e9-4242-8256-26185c021340", "name": "Sticky Note", "type": "n8n-nodes-base.stickyNote", "position": [ 1104, 688 ], "parameters": { "width": 380, "height": 220, "content": "### Reroute to OCR if needed\n\n- Try to extract text directly from PDF. \n- CamScanner is not saving text in a readable format, so we fall back to the image path instead.\n- Otherwise we send the text directly to the information extractor.\n\nOCR.Space API registration: https://ocr.space/OCRAPI" }, "typeVersion": 1 }, { "id": "670c7063-2d84-4b34-b99b-68414f55e27f", "name": "Sticky Note1", "type": "n8n-nodes-base.stickyNote", "position": [ 512, 304 ], "parameters": { "color": 2, "width": 460, "height": 80, "content": "### Setting some handy values for later down the road\n" }, "typeVersion": 1 }, { "id": "21b66216-fd94-49cf-8050-0b165308c440", "name": "Sticky Note2", "type": "n8n-nodes-base.stickyNote", "position": [ 1120, 144 ], "parameters": { "width": 696, "height": 308, "content": "### OCR for images and badly extracted PDFs \n" }, "typeVersion": 1 }, { "id": "ea1bc5c4-d8ed-47c0-a5b9-9bf6277342ca", "name": "Sticky Note3", "type": "n8n-nodes-base.stickyNote", "position": [ -352, 16 ], "parameters": { "width": 440, "height": 640, "content": "# Start here\n\n- Use the manual trigger to initialize the Google Drive folder with existing invoices\n- The scheduled trigger will identify new invoices and will start automatically" }, "typeVersion": 1 }, { "id": "ed831e1b-15fa-42c4-9deb-7a347745ab92", "name": "Mailgun", "type": "n8n-nodes-base.mailgun", "position": [ 688, 144 ], "parameters": { "html": "=

New invoices were scanned

\n\n{{ $json.table }}", "subject": "New scanned invoices", "toEmail": "user@example.com", "fromEmail": "=n8n@example.com" }, "credentials": { "mailgunApi": { "name": "" } }, "typeVersion": 1 }, { "id": "0f1ad01f-96c7-4c49-a346-040088f40b6c", "name": "Prepare a table", "type": "n8n-nodes-base.html", "position": [ 528, 144 ], "parameters": { "options": { "capitalize": true, "customStyling": true }, "operation": "convertToHtmlTable" }, "typeVersion": 1.2 }, { "id": "8ba5e5ab-b8e8-4ec5-96fd-c9b541832b66", "name": "Sticky Note4", "type": "n8n-nodes-base.stickyNote", "position": [ 528, 16 ], "parameters": { "width": 340, "height": 112, "content": "# End here\n" }, "typeVersion": 1 } ], "connections": { "Edit Fields": { "main": [ [ { "node": "Information Extractor", "type": "main", "index": 0 } ] ] }, "Save base64": { "main": [ [ { "node": "Switch Mime Type", "type": "main", "index": 0 } ] ] }, "Analyze Image": { "main": [ [ { "node": "Edit Fields", "type": "main", "index": 0 } ] ] }, "Download file": { "main": [ [ { "node": "Loop Over Items", "type": "main", "index": 0 } ] ] }, "Fetch 50 docs": { "main": [ [ { "node": "Download file", "type": "main", "index": 0 } ] ] }, "Re-set base64": { "main": [ [ { "node": "Convert to File", "type": "main", "index": 0 } ] ] }, "Convert to File": { "main": [ [ { "node": "Analyze Image", "type": "main", "index": 0 } ] ] }, "Loop Over Items": { "main": [ [ { "node": "Prepare a table", "type": "main", "index": 0 } ], [ { "node": "Set file identity", "type": "main", "index": 0 } ] ] }, "Prepare a table": { "main": [ [ { "node": "Mailgun", "type": "main", "index": 0 } ] ] }, "Switch Mime Type": { "main": [ [ { "node": "Analyze Image", "type": "main", "index": 0 } ], [ { "node": "Extract from File", "type": "main", "index": 0 } ], [ { "node": "Loop Over Items", "type": "main", "index": 0 } ] ] }, "Extract from File": { "main": [ [ { "node": "Identify CamScanner", "type": "main", "index": 0 } ] ] }, "OpenAI Chat Model": { "ai_languageModel": [ [ { "node": "Information Extractor", "type": "ai_languageModel", "index": 0 } ] ] }, "Set file identity": { "main": [ [ { "node": "Save base64", "type": "main", "index": 0 } ] ] }, "Append row in sheet": { "main": [ [ { "node": "Loop Over Items", "type": "main", "index": 0 } ] ] }, "Identify CamScanner": { "main": [ [ { "node": "Re-set base64", "type": "main", "index": 0 } ], [ { "node": "Information Extractor", "type": "main", "index": 0 } ] ] }, "Information Extractor": { "main": [ [ { "node": "Append row in sheet", "type": "main", "index": 0 } ] ] }, "Check for new invoices": { "main": [ [ { "node": "Download file", "type": "main", "index": 0 } ] ] }, "When clicking 'Execute workflow'": { "main": [ [ { "node": "Fetch 50 docs", "type": "main", "index": 0 } ] ] } } }