Resize, sharpen, and compress an image to fit email platform size limits in a single pipeline.
한국어 요약은 준비 중입니다. 원문 설명을 표시하고 있습니다.
Extract structured fields from w-4 documents.
한국어 요약은 준비 중입니다. 원문 설명을 표시하고 있습니다.
설치하기 전에 에이전트에게 전달되는 지시 내용을 확인할 수 있습니다.
Tax and finance teams use this recipe to extract W-4 fields from official forms into structured JSON for review, routing, and downstream filing preparation.
Document Extraction (1 credit per page)
You need an Iteration Layer API key. Get one at platform.iterationlayer.com during the 7-day trial.
For full integration guidance (SDKs, auth, MCP, error handling), see the Iteration Layer Integration Guide.
curl -X POST https://api.iterationlayer.com/document-extraction/v1/extract \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"files": [
{
"type": "url",
"name": "w-4.pdf",
"url": "https://example.com/documents/w-4-sample.pdf"
}
],
"schema": {
"fields": [
{
"name": "employee_name",
"type": "TEXT",
"description": "Employee full name"
},
{
"name": "social_security_number",
"type": "TEXT",
"description": "Employee Social Security number"
},
{
"name": "address",
"type": "ADDRESS",
"description": "Employee address"
},
{
"name": "filing_status",
"type": "TEXT",
"description": "Selected filing status"
},
{
"name": "dependents_amount",
"type": "CURRENCY_AMOUNT",
"description": "Step 3 dependent and other credits amount"
},
{
"name": "other_income",
"type": "CURRENCY_AMOUNT",
"description": "Step 4(a) other income"
},
{
"name": "deductions",
"type": "CURRENCY_AMOUNT",
"description": "Step 4(b) deductions"
},
{
"name": "extra_withholding",
"type": "CURRENCY_AMOUNT",
"description": "Step 4(c) extra withholding"
},
{
"name": "is_signed",
"type": "BOOLEAN",
"description": "Whether the employee signature is present"
},
{
"name": "signature_date",
"type": "DATE",
"description": "Date signed"
}
]
}
}'
import { IterationLayer } from "iterationlayer";
const client = new IterationLayer({ apiKey: "YOUR_API_KEY" });
const result = await client.extractDocument({
"files": [
{
"type": "url",
"name": "w-4.pdf",
"url": "https://example.com/documents/w-4-sample.pdf"
}
],
"schema": {
"fields": [
{
"name": "employee_name",
"type": "TEXT",
"description": "Employee full name"
},
{
"name": "social_security_number",
"type": "TEXT",
"description": "Employee Social Security number"
},
{
"name": "address",
"type": "ADDRESS",
"description": "Employee address"
},
{
"name": "filing_status",
"type": "TEXT",
"description": "Selected filing status"
},
{
"name": "dependents_amount",
"type": "CURRENCY_AMOUNT",
"description": "Step 3 dependent and other credits amount"
},
{
"name": "other_income",
"type": "CURRENCY_AMOUNT",
"description": "Step 4(a) other income"
},
{
"name": "deductions",
"type": "CURRENCY_AMOUNT",
"description": "Step 4(b) deductions"
},
{
"name": "extra_withholding",
"type": "CURRENCY_AMOUNT",
"description": "Step 4(c) extra withholding"
},
{
"name": "is_signed",
"type": "BOOLEAN",
"description": "Whether the employee signature is present"
},
{
"name": "signature_date",
"type": "DATE",
"description": "Date signed"
}
]
}
});
from iterationlayer import IterationLayer
client = IterationLayer(api_key="YOUR_API_KEY")
result = client.extract_document(**{
"files": [
{
"type": "url",
"name": "w-4.pdf",
"url": "https://example.com/documents/w-4-sample.pdf"
}
],
"schema": {
"fields": [
{
"name": "employee_name",
"type": "TEXT",
"description": "Employee full name"
},
{
"name": "social_security_number",
"type": "TEXT",
"description": "Employee Social Security number"
},
{
"name": "address",
"type": "ADDRESS",
"description": "Employee address"
},
{
"name": "filing_status",
"type": "TEXT",
"description": "Selected filing status"
},
{
"name": "dependents_amount",
"type": "CURRENCY_AMOUNT",
"description": "Step 3 dependent and other credits amount"
},
{
"name": "other_income",
"type": "CURRENCY_AMOUNT",
"description": "Step 4(a) other income"
},
{
"name": "deductions",
"type": "CURRENCY_AMOUNT",
"description": "Step 4(b) deductions"
},
{
"name": "extra_withholding",
"type": "CURRENCY_AMOUNT",
"description": "Step 4(c) extra withholding"
},
{
"name": "is_signed",
"type": "BOOLEAN",
"description": "Whether the employee signature is present"
},
{
"name": "signature_date",
"type": "DATE",
"description": "Date signed"
}
]
}
})
package main
import il "github.com/iterationlayer/sdk-go"
func main() {
client := il.NewClient("YOUR_API_KEY")
result, err := client.ExtractDocument(il.ExtractDocumentRequest{
Files: []il.FileInput{
il.FileInput{
Type: "url",
Name: "w-4.pdf",
Url: "https://example.com/documents/w-4-sample.pdf",
},
},
Schema: il.ExtractionSchema{
Fields: []any{
il.TextFieldConfig{
Name: "employee_name",
Type: "TEXT",
Description: "Employee full name",
},
il.TextFieldConfig{
Name: "social_security_number",
Type: "TEXT",
Description: "Employee Social Security number",
},
il.AddressFieldConfig{
Name: "address",
Type: "ADDRESS",
Description: "Employee address",
},
il.TextFieldConfig{
Name: "filing_status",
Type: "TEXT",
Description: "Selected filing status",
},
il.CurrencyAmountFieldConfig{
Name: "dependents_amount",
Type: "CURRENCY_AMOUNT",
Description: "Step 3 dependent and other credits amount",
},
il.CurrencyAmountFieldConfig{
Name: "other_income",
Type: "CURRENCY_AMOUNT",
Description: "Step 4(a) other income",
},
il.CurrencyAmountFieldConfig{
Name: "deductions",
Type: "CURRENCY_AMOUNT",
Description: "Step 4(b) deductions",
},
il.CurrencyAmountFieldConfig{
Name: "extra_withholding",
Type: "CURRENCY_AMOUNT",
Description: "Step 4(c) extra withholding",
},
il.BooleanFieldConfig{
Name: "is_signed",
Type: "BOOLEAN",
Description: "Whether the employee signature is present",
},
il.DateFieldConfig{
Name: "signature_date",
Type: "DATE",
Description: "Date signed",
},
},
},
})
if err != nil {
panic(err)
}
_ = result
}
{
"name": "Extract W-4 Data",
"nodes": [
{
"parameters": {
"content": "## Extract W-4 Data\n\nTax and finance teams use this recipe to extract W-4 fields from official forms into structured JSON for review, routing, and downstream filing preparation.\n\n**Note:** This workflow uses the Iteration Layer community node (`n8n-nodes-iterationlayer`). Install it via Settings > Community Nodes on self-hosted n8n, or add it directly on n8n Cloud with Verified Community Nodes enabled.",
"height": 280,
"width": 500,
"color": 2
},
"type": "n8n-nodes-base.stickyNote",
"typeVersion": 1,
"position": [
200,
40
],
"id": "extract-w-4-data-overview",
"name": "Overview"
},
{
"parameters": {},
"type": "n8n-nodes-base.manualTrigger",
"typeVersion": 1,
"position": [
250,
300
],
"id": "extract-w-4-data-trigger",
"name": "Manual Trigger"
},
{
"parameters": {
"resource": "documentExtraction",
"schemaInputMode": "rawJson",
"schemaJson": "{\n \"fields\": [\n {\n \"name\": \"employee_name\",\n \"type\": \"TEXT\",\n \"description\": \"Employee full name\"\n },\n {\n \"name\": \"social_security_number\",\n \"type\": \"TEXT\",\n \"description\": \"Employee Social Security number\"\n },\n {\n \"name\": \"address\",\n \"type\": \"ADDRESS\",\n \"description\": \"Employee address\"\n },\n {\n \"name\": \"filing_status\",\n \"type\": \"TEXT\",\n \"description\": \"Selected filing status\"\n },\n {\n \"name\": \"dependents_amount\",\n \"type\": \"CURRENCY_AMOUNT\",\n \"description\": \"Step 3 dependent and other credits amount\"\n },\n {\n \"name\": \"other_income\",\n \"type\": \"CURRENCY_AMOUNT\",\n \"description\": \"Step 4(a) other income\"\n },\n {\n \"name\": \"deductions\",\n \"type\": \"CURRENCY_AMOUNT\",\n \"description\": \"Step 4(b) deductions\"\n },\n {\n \"name\": \"extra_withholding\",\n \"type\": \"CURRENCY_AMOUNT\",\n \"description\": \"Step 4(c) extra withholding\"\n },\n {\n \"name\": \"is_signed\",\n \"type\": \"BOOLEAN\",\n \"description\": \"Whether the employee signature is present\"\n },\n {\n \"name\": \"signature_date\",\n \"type\": \"DATE\",\n \"description\": \"Date signed\"\n }\n ]\n}",
"files": {
"fileValues": [
{
"fileInputMode": "url",
"fileName": "w-4.pdf",
"fileUrl": "https://example.com/documents/w-4-sample.pdf"
}
]
}
},
"type": "n8n-nodes-iterationlayer.iterationLayer",
"typeVersion": 1,
"position": [
500,
300
],
"id": "extract-w-4-data-extract",
"name": "Extract Data",
"credentials": {
"iterationLayerApi": {
"id": "1",
"name": "Iteration Layer API"
}
}
}
],
"connections": {
"Manual Trigger": {
"main": [
[
{
"node": "Extract Data",
"type": "main",
"index": 0
}
]
]
}
},
"settings": {
"executionOrder": "v1"
}
}
Extract w-4 data from the file at [file URL]. Use the extract_document tool with these fields:
- employee_name (TEXT): Employee full name
- social_security_number (TEXT): Employee Social Security number
- address (ADDRESS): Employee address
- filing_status (TEXT): Selected filing status
- dependents_amount (CURRENCY_AMOUNT): Step 3 dependent and other credits amount
- other_income (CURRENCY_AMOUNT): Step 4(a) other income
- deductions (CURRENCY_AMOUNT): Step 4(b) deductions
- extra_withholding (CURRENCY_AMOUNT): Step 4(c) extra withholding
- is_signed (BOOLEAN): Whether the employee signature is present
- signature_date (DATE): Date signed
{
"success": true,
"data": {
"employee_name": {
"value": "Employee Name",
"confidence": 0.97,
"citations": [
"EMPLOYEE NAME"
]
},
"social_security_number": {
"value": "Social Security Number",
"confidence": 0.97,
"citations": [
"SOCIAL SECURITY NUMBER"
]
},
"address": {
"value": {
"street": "100 Market Street",
"city": "Berlin",
"postal_code": "10115",
"country": "DE"
},
"confidence": 0.97,
"citations": [
"ADDRESS"
]
},
"filing_status": {
"value": "Filing Status",
"confidence": 0.97,
"citations": [
"FILING STATUS"
]
},
"dependents_amount": {
"value": {
"amount": "1234.56",
"currency": "USD"
},
"confidence": 0.97,
"citations": [
"$1,234.56"
]
},
"other_income": {
"value": {
"amount": "1234.56",
"currency": "USD"
},
"confidence": 0.97,
"citations": [
"$1,234.56"
]
},
"deductions": {
"value": {
"amount": "1234.56",
"currency": "USD"
},
"confidence": 0.97,
"citations": [
"$1,234.56"
]
},
"extra_withholding": {
"value": {
"amount": "1234.56",
"currency": "USD"
},
"confidence": 0.97,
"citations": [
"$1,234.56"
]
},
"is_signed": {
"value": true,
"confidence": 0.97,
"citations": [
"IS SIGNED"
]
},
"signature_date": {
"value": "2026-04-15",
"confidence": 0.97,
"citations": [
"15 Apr 2026"
]
}
}
}
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Resize, sharpen, and compress an image to fit email platform size limits in a single pipeline.
한국어 요약은 준비 중입니다. 원문 설명을 표시하고 있습니다.
Compress an image to fit within a specific file size in bytes using quality-first compression.
한국어 요약은 준비 중입니다. 원문 설명을 표시하고 있습니다.
Convert a contract PDF to clean markdown for clause extraction or LLM analysis.
한국어 요약은 준비 중입니다. 원문 설명을 표시하고 있습니다.
Convert external documents — specs, contracts, reports — to markdown for knowledge base ingestion.
한국어 요약은 준비 중입니다. 원문 설명을 표시하고 있습니다.
Convert a document to clean markdown suitable for chunking and embedding in a RAG pipeline.
한국어 요약은 준비 중입니다. 원문 설명을 표시하고 있습니다.
Convert an image between PNG, JPEG, and WebP formats with quality control for web optimization.
한국어 요약은 준비 중입니다. 원문 설명을 표시하고 있습니다.