AI-Invoice Parser using n8n action
PDF4me AI-Invoice Parser extracts structured data from invoices using AI-powered machine learning through n8n automation workflows. Process invoice PDFs or images via n8n triggers, binary data, base64 strings, or public URLs to automatically extract vendor details, invoice numbers, line items, amounts, dates, payment terms, tax information, and other invoice fields with high accuracy and intelligent field recognition. This solution is ideal for accounts payable automation, invoice digitization, financial data extraction, accounting system integration, automated data entry, and invoice processing workflows that require AI-powered extraction with structured output and seamless integration.
Setup
Add the PDF4me "AI-Invoice Parser" node to your n8n workflow and configure the required parameters. For initial setup instructions, see our n8n Integration Guide.
Prerequisites:
- PDF4me API credentials
- n8n workflow access
Configuration:
- Add PDF4me node to workflow
- Select "AI-Invoice Parser" action
- Configure input parameters (see below)
Parameters
Complete list of parameters for the AI-Invoice Parser action. Configure these parameters to control invoice parsing.
Important: Parameters marked with an asterisk (***) are required and must be provided for the action to function correctly.
| Parameter | Type | Description | Example |
|---|---|---|---|
| Input Data Type*** | String | Invoice Input Format Selection • Choose the format of your invoice data input • PDF4me supports multiple input types • Options: Binary Data, Base64 String, or URL | Binary Data |
| Input Binary Field*** | Binary | Binary Invoice File Input (Required if Binary Data) • Reference invoice file (.pdf, .png, .jpg, .jpeg) from previous n8n node or file upload • PDF4me processes binary invoice files with automatic format detection and AI-powered data extraction • Required when Input Data Type is "Binary Data" | {{ $binary.data }} |
| Base64 Invoice Content*** | String | Base64 Encoded Invoice Input (Required if Base64 String) • Provide invoice content (.pdf, .png, .jpg, .jpeg) as base64 encoded string for secure transmission • PDF4me automatically decodes and processes the invoice content using AI technology • Required when Input Data Type is "Base64 String" | JVBERi0xLjQKJ... |
| Invoice URL*** | String | Public Invoice URL Input (Required if URL) • Provide a public/open permission URL to the invoice file (.pdf, .png, .jpg, .jpeg) to be processed • PDF4me downloads and processes the invoice file from the provided URL using AI technology • Required when Input Data Type is "URL" | https://abc.com/invoice.pdf |
| Invoice Name*** | String | Invoice Input Filename • Specify the name of the input invoice file with proper extension (.pdf, .png, .jpg, .jpeg) • PDF4me uses this for format detection and AI processing optimization | invoice.pdf |
| Custom Field Keys | Array | Optional Custom Field Keys List • Optional list of custom field keys to extract from the invoice • Specify additional fields beyond standard invoice data • Supports multiple custom field keys for enhanced data extraction • Each custom field should have a unique field name (e.g., "phone", "email", "tax_id") • Field names are case-sensitive and should follow naming conventions | ["customField1", "customField2"] |
Custom Fields
You can extract additional custom fields from invoices beyond the standard invoice data. To add custom fields:
- Field Name (Required): Specify the unique identifier for the custom field you want to extract (e.g., "phone", "email", "tax_id", "vendor_code")
- Field Description (Optional): Provide a description of what the custom field represents (e.g., "Phone number of the vendor", "Email address for billing inquiries")
Add custom field names to the Custom Field Keys array parameter. The AI will attempt to extract these fields from the invoice document and include them in the response.
Example:
["vendor_phone", "vendor_email", "tax_id", "purchase_order_number"]
Output
Output Parameters
| Parameter | Type | Description | Example |
|---|---|---|---|
| invoiceNumber | String | PDF4me extracted invoice number - The unique invoice number or reference identifier extracted from the invoice document by PDF4me's AI technology | INV-2024-001 |
| vendorName | String | PDF4me extracted vendor information - The complete name of the vendor or supplier extracted from the invoice using AI-powered text recognition and analysis | Acme Corporation Ltd. |
| vendorAddress | String | PDF4me extracted vendor address - The complete address of the vendor including street, city, state, and postal code extracted by AI technology | 123 Business St, New York, NY 10001 |
| vendorEmail | String | PDF4me extracted vendor contact - The email address of the vendor extracted from the invoice using AI-powered pattern recognition | [email protected] |
| vendorPhone | String | PDF4me extracted vendor phone - The phone number of the vendor extracted from the invoice using AI technology | +1-555-123-4567 |
| billToName | String | PDF4me extracted billing name - The name of the entity being billed, extracted from the invoice using AI technology | ABC Company Inc. |
| billToAddress | String | PDF4me extracted billing address - The complete billing address including street, city, state, and postal code extracted by AI technology | 456 Customer Ave, Los Angeles, CA 90210 |
| billToState | String | PDF4me extracted billing state - The state or province of the billing address extracted from the invoice using AI technology | California |
| billToPincode | String | PDF4me extracted billing postal code - The postal code or ZIP code of the billing address extracted by AI technology | 90210 |
| invoiceDate | String | PDF4me extracted invoice date - The date when the invoice was issued, extracted and formatted by AI technology in ISO 8601 format | 2024-01-15 |
| dueDate | String | PDF4me extracted payment due date - The payment due date extracted from the invoice using AI-powered date recognition and parsing | 2024-02-14 |
| subTotal | Number | PDF4me extracted subtotal amount - The subtotal amount before taxes and fees, extracted by AI technology with precise decimal handling | 585 |
| cgst | Number | PDF4me extracted CGST amount - The Central Goods and Services Tax amount extracted from the invoice using AI-powered tax calculation recognition | 0 |
| sgst | Number | PDF4me extracted SGST amount - The State Goods and Services Tax amount extracted from the invoice using AI technology | 0 |
| cgstRate | Number | PDF4me extracted CGST rate - The Central GST rate percentage extracted from the invoice using AI-powered tax rate recognition | 0 |
| sgstRate | Number | PDF4me extracted SGST rate - The State GST rate percentage extracted from the invoice using AI technology | 0 |
| total | Number | PDF4me extracted total amount - The final total amount including all taxes and fees, extracted by AI technology with high accuracy | 585 |
| currency | String | PDF4me extracted currency code - The currency code (ISO 4217) of the invoice amounts extracted by AI technology | USD |
| paymentTerms | String | PDF4me extracted payment terms - The payment terms and conditions extracted from the invoice using AI-powered text analysis | Net 30 |
| lineItems | Array | PDF4me extracted line items - Array of individual line items with descriptions, quantities, unit prices, HSN codes, and tax details extracted by AI technology | [{"hsnCode": "", "description": "PDF4me 25k calls", "unitPrice": 585, "quantity": 1, "total": 585}] |
| confidence | Object | PDF4me AI confidence scores - Object containing confidence scores for specific extracted fields, provided by PDF4me's AI technology for quality assessment | {"invoiceNumber": 1, "vendorName": 1} |
| jobId | String | PDF4me processing job identifier - Unique identifier for the AI processing job, used for tracking and debugging purposes | 00000000-0000-0000-0000-000000000000 |
| jobIdExt | String | PDF4me external job identifier - External job identifier for integration with third-party systems, if applicable | null |
| success | Boolean | PDF4me AI extraction status indicator - Boolean flag indicating the success or failure of the AI-powered invoice data extraction process. PDF4me returns true for successful extractions and false for any errors | true |
| message | String | PDF4me AI extraction status message - Descriptive message indicating the result of the AI-powered invoice data extraction process. PDF4me provides clear status messages for successful extractions and detailed error information | Invoice data extracted successfully using AI technology |
N8N Action Response
The PDF4me AI-Invoice Parser API returns a JSON response with the following structure:
{
"invoiceNumber": "INV-2024-001",
"vendorName": "Sample Corporation Ltd.",
"vendorAddress": "123 Business Street, New York, NY 10001",
"vendorEmail": "[email protected]",
"vendorPhone": "+1-555-123-4567",
"billToName": "Customer Company Inc.",
"billToAddress": "456 Customer Avenue, Los Angeles, CA 90210",
"billToState": "California",
"billToPincode": "90210",
"invoiceDate": "2024-01-15",
"dueDate": "2024-02-14",
"subTotal": 1250.00,
"cgst": 125.00,
"sgst": 125.00,
"cgstRate": 10,
"sgstRate": 10,
"total": 1500.00,
"currency": "USD",
"paymentTerms": "Net 30",
"lineItems": [
{
"hsnCode": "12345678",
"description": "Software License - Premium Package",
"unitPrice": 1000.00,
"discount": 50.00,
"quantity": 1,
"taxableValue": 950.00,
"cgstAmount": 95.00,
"sgstAmount": 95.00,
"total": 1140.00
},
{
"hsnCode": "87654321",
"description": "Support Services - Annual",
"unitPrice": 300.00,
"discount": 0.00,
"quantity": 1,
"taxableValue": 300.00,
"cgstAmount": 30.00,
"sgstAmount": 30.00,
"total": 360.00
}
],
"confidence": {
"invoiceNumber": 0.95,
"vendorName": 0.98,
"total": 0.92
},
"jobId": "12345678-1234-1234-1234-123456789012",
"jobIdExt": "EXT-2024-001",
"success": true,
"message": "Invoice data extracted successfully using AI technology"
}
Use Cases
Enterprise Financial Automation
- Accounts Payable Processing: Automate invoice data entry and validation
- Financial Data Integration: Seamlessly integrate with ERP and accounting systems
- Invoice Approval Workflows: Streamline approval processes with extracted data
AI-Powered Document Processing
- Multi-Format Support: Process PDF, PNG, JPG, and JPEG invoice formats
- Multi-Language Processing: Extract data from invoices in various languages
- Intelligent Field Recognition: Automatically identify and extract relevant fields
Business Intelligence and Analytics
- Spend Analysis: Aggregate and analyze vendor spending patterns
- Compliance Monitoring: Ensure invoice data meets regulatory requirements
- Performance Metrics: Track processing accuracy and efficiency