iterationlayer Generate PDF Invoice
Finance teams and SaaS platforms use this recipe to generate a branded PDF invoice on demand. Define your company header, billing details, line items, and totals — ready to email or archive as part of your billing workflow.
APIs Used
Document Generation (1 credits/request)
Prerequisites
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.
Implementation
prompt
curl -X POST https://api.iterationlayer.com/document-generation/v1/generate \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"format": "pdf",
"document": {
"metadata": {
"title": "Invoice #2026-0142",
"author": "Nordlicht Consulting GmbH"
},
"page": {
"size": { "preset": "A4" },
"margins": {
"top_in_pt": 72,
"right_in_pt": 72,
"bottom_in_pt": 72,
"left_in_pt": 72
}
},
"styles": {
"text": {
"font_family": "Helvetica",
"font_size_in_pt": 11.0,
"line_height": 1.5,
"color": "#333333"
},
"headline": {
"font_family": "Helvetica",
"font_size_in_pt": 24.0,
"color": "#111111",
"spacing_before_in_pt": 12.0,
"spacing_after_in_pt": 6.0,
"font_weight": "bold"
},
"link": {
"color": "#0066CC",
"is_underlined": true
},
"list": {
"text_style": {
"font_family": "Helvetica",
"font_size_in_pt": 11.0,
"line_height": 1.5,
"color": "#333333"
},
"marker_color": "#333333",
"marker_gap_in_pt": 8.0
},
"table": {
"header": {
"background_color": "#333333",
"text_color": "#FFFFFF",
"font_size_in_pt": 11.0,
"font_weight": "bold"
},
"body": {
"background_color": "#FFFFFF",
"text_color": "#333333",
"font_size_in_pt": 11.0
},
"border": {
"outer": {
"top": {
"color": "#CCCCCC",
"width_in_pt": 1.0
},
"right": {
"color": "#CCCCCC",
"width_in_pt": 1.0
},
"bottom": {
"color": "#CCCCCC",
"width_in_pt": 1.0
},
"left": {
"color": "#CCCCCC",
"width_in_pt": 1.0
}
},
"inner": {
"horizontal": {
"color": "#EEEEEE",
"width_in_pt": 0.5
},
"vertical": {
"color": "#EEEEEE",
"width_in_pt": 0.5
}
}
}
},
"grid": {
"background_color": "#FFFFFF",
"border_color": "#CCCCCC",
"border_width_in_pt": 0.0,
"gap_in_pt": 12.0
},
"separator": {
"color": "#CCCCCC",
"thickness_in_pt": 1.0,
"spacing_before_in_pt": 12.0,
"spacing_after_in_pt": 12.0
},
"image": {
"border_color": "#000000",
"border_width_in_pt": 0.0
}
},
"footer": [
{
"type": "paragraph",
"runs": [{
"text": "Nordlicht Consulting GmbH · 742 Evergreen Terrace, Suite 300, Austin, TX 78701 · acme-consulting.com"
}]
}
],
"content": [
{
"type": "grid",
"columns": [
{
"column_span": 6,
"blocks": [
{
"type": "headline",
"level": "h1",
"text": "Nordlicht Consulting GmbH",
},
{ "type": "paragraph", "runs": [{
"text": "742 Evergreen Terrace,
Suite 300\nAustin,
TX 78701\nhello@acme-consulting.com",
}] }
]
},
{
"column_span": 6,
"blocks": [
{
"type": "headline",
"level": "h2",
"text": "INVOICE",
},
{ "type": "paragraph", "runs": [
{
"text": "Invoice #: ",
"font_weight": "bold",
},
{ "text": "2026-0142\n" },
{
"text": "Date: ",
"font_weight": "bold",
},
{
"text": "March 1,
2026\n",
},
{
"text": "Due Date: ",
"font_weight": "bold",
},
{
"text": "March 31,
2026",
}
] }
]
}
]
},
{ "type": "separator" },
{
"type": "headline",
"level": "h3",
"text": "Bill To",
},
{ "type": "paragraph", "runs": [
{
"text": "Northwind Industries\n",
"font_weight": "bold",
},
{
"text": "Attn: Sarah Chen,
VP of Operations\n1200 Industrial Blvd,
Denver,
CO 80202\nsarah.chen@northwind.com",
}
] },
{ "type": "separator" },
{
"type": "table",
"column_widths_in_percent": [40, 15, 20, 25],
"header": {
"cells": [
{ "text": "Description" },
{
"text": "Qty",
"horizontal_alignment": "center",
},
{
"text": "Unit Price",
"horizontal_alignment": "right",
},
{
"text": "Amount",
"horizontal_alignment": "right",
}
]
},
"rows": [
{ "cells": [
{ "text": "Brand Strategy Workshop (2 days)" },
{
"text": "1",
"horizontal_alignment": "center",
},
{
"text": "EUR 8,
500.00",
"horizontal_alignment": "right",
},
{
"text": "EUR 8,
500.00",
"horizontal_alignment": "right",
}
] },
{ "cells": [
{ "text": "UI/UX Design Sprint (5 days)" },
{
"text": "1",
"horizontal_alignment": "center",
},
{
"text": "EUR 15,
000.00",
"horizontal_alignment": "right",
},
{
"text": "EUR 15,
000.00",
"horizontal_alignment": "right",
}
] },
{ "cells": [
{ "text": "Frontend Development" },
{
"text": "120",
"horizontal_alignment": "center",
},
{
"text": "EUR 175.00",
"horizontal_alignment": "right",
},
{
"text": "EUR 21,
000.00",
"horizontal_alignment": "right",
}
] },
{ "cells": [
{ "text": "QA & User Acceptance Testing" },
{
"text": "40",
"horizontal_alignment": "center",
},
{
"text": "EUR 150.00",
"horizontal_alignment": "right",
},
{
"text": "EUR 6,
000.00",
"horizontal_alignment": "right",
}
] }
]
},
{ "type": "separator" },
{
"type": "grid",
"columns": [
{
"column_span": 6,
"blocks": [],
},
{
"column_span": 6,
"blocks": [
{ "type": "paragraph", "runs": [
{
"text": "Subtotal: ",
"font_weight": "bold",
},
{
"text": "EUR 50,
500.00\n",
},
{
"text": "Tax (8.25%): ",
"font_weight": "bold",
},
{
"text": "EUR 4,
166.25\n",
},
{
"text": "Total Due: ",
"font_weight": "bold",
},
{
"text": "EUR 54,
666.25",
}
] }
]
}
]
},
{ "type": "separator" },
{ "type": "paragraph", "runs": [
{
"text": "Payment Terms: ",
"font_weight": "bold",
},
{
"text": "Net 30. Please remit payment via wire transfer to Nordlicht Consulting GmbH,
Account #4821-7390-5512,
Routing #021000021.",
}
] }
]
}
}'
import { IterationLayer } from "iterationlayer";
const client = new IterationLayer({ apiKey: "YOUR_API_KEY" });
const result = await client.generateDocument({
format: "pdf",
document: {
metadata: {
title: "Invoice #2026-0142",
author: "Nordlicht Consulting GmbH",
},
page: {
size: { preset: "A4" },
margins: {
top_in_pt: 72,
right_in_pt: 72,
bottom_in_pt: 72,
left_in_pt: 72,
},
},
styles: {
text: {
font_family: "Helvetica",
font_size_in_pt: 11.0,
line_height: 1.5,
color: "#333333",
},
headline: {
font_family: "Helvetica",
font_size_in_pt: 24.0,
color: "#111111",
spacing_before_in_pt: 12.0,
spacing_after_in_pt: 6.0,
font_weight: "bold",
},
link: {
color: "#0066CC",
is_underlined: true,
},
list: {
text_style: {
font_family: "Helvetica",
font_size_in_pt: 11.0,
line_height: 1.5,
color: "#333333",
},
marker_color: "#333333",
marker_gap_in_pt: 8.0,
},
table: {
header: {
background_color: "#333333",
text_color: "#FFFFFF",
font_size_in_pt: 11.0,
font_weight: "bold",
},
body: {
background_color: "#FFFFFF",
text_color: "#333333",
font_size_in_pt: 11.0,
},
border: {
outer: {
top: {
color: "#CCCCCC",
width_in_pt: 1.0,
},
right: {
color: "#CCCCCC",
width_in_pt: 1.0,
},
bottom: {
color: "#CCCCCC",
width_in_pt: 1.0,
},
left: {
color: "#CCCCCC",
width_in_pt: 1.0,
},
},
inner: {
horizontal: {
color: "#EEEEEE",
width_in_pt: 0.5,
},
vertical: {
color: "#EEEEEE",
width_in_pt: 0.5,
},
},
},
},
grid: {
background_color: "#FFFFFF",
border_color: "#CCCCCC",
border_width_in_pt: 0.0,
gap_in_pt: 12.0,
},
separator: {
color: "#CCCCCC",
thickness_in_pt: 1.0,
spacing_before_in_pt: 12.0,
spacing_after_in_pt: 12.0,
},
image: {
border_color: "#000000",
border_width_in_pt: 0.0,
},
},
footer: [
{
type: "paragraph",
runs: [{
text: "Nordlicht Consulting GmbH · 742 Evergreen Terrace, Suite 300, Austin, TX 78701 · acme-consulting.com",
}],
},
],
content: [
{
type: "grid",
columns: [
{
column_span: 6,
blocks: [
{
type: "headline",
level: "h1",
text: "Nordlicht Consulting GmbH",
},
{ type: "paragraph", runs: [{
text: "742 Evergreen Terrace,
Suite 300\nAustin,
TX 78701\nhello@acme-consulting.com",
}] },
],
},
{
column_span: 6,
blocks: [
{
type: "headline",
level: "h2",
text: "INVOICE",
},
{ type: "paragraph", runs: [
{
text: "Invoice #: ",
font_weight: "bold",
},
{ text: "2026-0142\n" },
{
text: "Date: ",
font_weight: "bold",
},
{
text: "March 1,
2026\n",
},
{
text: "Due Date: ",
font_weight: "bold",
},
{
text: "March 31,
2026",
},
] },
],
},
],
},
{ type: "separator" },
{
type: "headline",
level: "h3",
text: "Bill To",
},
{ type: "paragraph", runs: [
{
text: "Northwind Industries\n",
font_weight: "bold",
},
{
text: "Attn: Sarah Chen,
VP of Operations\n1200 Industrial Blvd,
Denver,
CO 80202\nsarah.chen@northwind.com",
},
] },
{ type: "separator" },
{
type: "table",
column_widths_in_percent: [40, 15, 20, 25],
header: {
cells: [
{ text: "Description" },
{
text: "Qty",
horizontal_alignment: "center",
},
{
text: "Unit Price",
horizontal_alignment: "right",
},
{
text: "Amount",
horizontal_alignment: "right",
},
],
},
rows: [
{ cells: [
{ text: "Brand Strategy Workshop (2 days)" },
{
text: "1",
horizontal_alignment: "center",
},
{
text: "EUR 8,
500.00",
horizontal_alignment: "right",
},
{
text: "EUR 8,
500.00",
horizontal_alignment: "right",
},
] },
{ cells: [
{ text: "UI/UX Design Sprint (5 days)" },
{
text: "1",
horizontal_alignment: "center",
},
{
text: "EUR 15,
000.00",
horizontal_alignment: "right",
},
{
text: "EUR 15,
000.00",
horizontal_alignment: "right",
},
] },
{ cells: [
{ text: "Frontend Development" },
{
text: "120",
horizontal_alignment: "center",
},
{
text: "EUR 175.00",
horizontal_alignment: "right",
},
{
text: "EUR 21,
000.00",
horizontal_alignment: "right",
},
] },
{ cells: [
{ text: "QA & User Acceptance Testing" },
{
text: "40",
horizontal_alignment: "center",
},
{
text: "EUR 150.00",
horizontal_alignment: "right",
},
{
text: "EUR 6,
000.00",
horizontal_alignment: "right",
},
] },
],
},
{ type: "separator" },
{
type: "grid",
columns: [
{
column_span: 6,
blocks: [],
},
{
column_span: 6,
blocks: [
{ type: "paragraph", runs: [
{
text: "Subtotal: ",
font_weight: "bold",
},
{
text: "EUR 50,
500.00\n",
},
{
text: "Tax (8.25%): ",
font_weight: "bold",
},
{
text: "EUR 4,
166.25\n",
},
{
text: "Total Due: ",
font_weight: "bold",
},
{
text: "EUR 54,
666.25",
},
] },
],
},
],
},
{ type: "separator" },
{ type: "paragraph", runs: [
{
text: "Payment Terms: ",
font_weight: "bold",
},
{
text: "Net 30. Please remit payment via wire transfer to Nordlicht Consulting GmbH,
Account #4821-7390-5512,
Routing #021000021.",
},
] },
],
},
});
from iterationlayer import IterationLayer
client = IterationLayer(api_key="YOUR_API_KEY")
result = client.generate_document(
format="pdf",
document={
"metadata": {
"title": "Invoice #2026-0142",
"author": "Nordlicht Consulting GmbH",
},
"page": {
"size": {"preset": "A4"},
"margins": {
"top_in_pt": 72,
"right_in_pt": 72,
"bottom_in_pt": 72,
"left_in_pt": 72,
},
},
"styles": {
"text": {
"font_family": "Helvetica",
"font_size_in_pt": 11.0,
"line_height": 1.5,
"color": "#333333",
},
"headline": {
"font_family": "Helvetica",
"font_size_in_pt": 24.0,
"color": "#111111",
"spacing_before_in_pt": 12.0,
"spacing_after_in_pt": 6.0,
"font_weight": "bold",
},
"link": {
"color": "#0066CC",
"is_underlined": True,
},
"list": {
"text_style": {
"font_family": "Helvetica",
"font_size_in_pt": 11.0,
"line_height": 1.5,
"color": "#333333",
},
"marker_color": "#333333",
"marker_gap_in_pt": 8.0,
},
"table": {
"header": {
"background_color": "#333333",
"text_color": "#FFFFFF",
"font_size_in_pt": 11.0,
"font_weight": "bold",
},
"body": {
"background_color": "#FFFFFF",
"text_color": "#333333",
"font_size_in_pt": 11.0,
},
"border": {
"outer": {
"top": {
"color": "#CCCCCC",
"width_in_pt": 1.0,
},
"right": {
"color": "#CCCCCC",
"width_in_pt": 1.0,
},
"bottom": {
"color": "#CCCCCC",
"width_in_pt": 1.0,
},
"left": {
"color": "#CCCCCC",
"width_in_pt": 1.0,
},
},
"inner": {
"horizontal": {
"color": "#EEEEEE",
"width_in_pt": 0.5,
},
"vertical": {
"color": "#EEEEEE",
"width_in_pt": 0.5,
},
},
},
},
"grid": {
"background_color": "#FFFFFF",
"border_color": "#CCCCCC",
"border_width_in_pt": 0.0,
"gap_in_pt": 12.0,
},
"separator": {
"color": "#CCCCCC",
"thickness_in_pt": 1.0,
"spacing_before_in_pt": 12.0,
"spacing_after_in_pt": 12.0,
},
"image": {
"border_color": "#000000",
"border_width_in_pt": 0.0,
},
},
"footer": [
{
"type": "paragraph",
"runs": [{
"text": "Nordlicht Consulting GmbH · 742 Evergreen Terrace, Suite 300, Austin, TX 78701 · acme-consulting.com",
}],
},
],
"content": [
{
"type": "grid",
"columns": [
{
"column_span": 6,
"blocks": [
{
"type": "headline",
"level": "h1",
"text": "Nordlicht Consulting GmbH",
},
{"type": "paragraph", "runs": [{
"text": "742 Evergreen Terrace,
Suite 300\nAustin,
TX 78701\nhello@acme-consulting.com",
}]},
],
},
{
"column_span": 6,
"blocks": [
{
"type": "headline",
"level": "h2",
"text": "INVOICE",
},
{"type": "paragraph", "runs": [
{
"text": "Invoice #: ",
"font_weight": "bold",
},
{"text": "2026-0142\n"},
{
"text": "Date: ",
"font_weight": "bold",
},
{
"text": "March 1,
2026\n",
},
{
"text": "Due Date: ",
"font_weight": "bold",
},
{
"text": "March 31,
2026",
},
]},
],
},
],
},
{"type": "separator"},
{
"type": "headline",
"level": "h3",
"text": "Bill To",
},
{"type": "paragraph", "runs": [
{
"text": "Northwind Industries\n",
"font_weight": "bold",
},
{
"text": "Attn: Sarah Chen,
VP of Operations\n1200 Industrial Blvd,
Denver,
CO 80202\nsarah.chen@northwind.com",
},
]},
{"type": "separator"},
{
"type": "table",
"column_widths_in_percent": [40, 15, 20, 25],
"header": {
"cells": [
{"text": "Description"},
{
"text": "Qty",
"horizontal_alignment": "center",
},
{
"text": "Unit Price",
"horizontal_alignment": "right",
},
{
"text": "Amount",
"horizontal_alignment": "right",
},
],
},
"rows": [
{"cells": [
{"text": "Brand Strategy Workshop (2 days)"},
{
"text": "1",
"horizontal_alignment": "center",
},
{
"text": "EUR 8,
500.00",
"horizontal_alignment": "right",
},
{
"text": "EUR 8,
500.00",
"horizontal_alignment": "right",
},
]},
{"cells": [
{"text": "UI/UX Design Sprint (5 days)"},
{
"text": "1",
"horizontal_alignment": "center",
},
{
"text": "EUR 15,
000.00",
"horizontal_alignment": "right",
},
{
"text": "EUR 15,
000.00",
"horizontal_alignment": "right",
},
]},
{"cells": [
{"text": "Frontend Development"},
{
"text": "120",
"horizontal_alignment": "center",
},
{
"text": "EUR 175.00",
"horizontal_alignment": "right",
},
{
"text": "EUR 21,
000.00",
"horizontal_alignment": "right",
},
]},
{"cells": [
{"text": "QA & User Acceptance Testing"},
{
"text": "40",
"horizontal_alignment": "center",
},
{
"text": "EUR 150.00",
"horizontal_alignment": "right",
},
{
"text": "EUR 6,
000.00",
"horizontal_alignment": "right",
},
]},
],
},
{"type": "separator"},
{
"type": "grid",
"columns": [
{
"column_span": 6,
"blocks": [],
},
{
"column_span": 6,
"blocks": [
{"type": "paragraph", "runs": [
{
"text": "Subtotal: ",
"font_weight": "bold",
},
{
"text": "EUR 50,
500.00\n",
},
{
"text": "Tax (8.25%): ",
"font_weight": "bold",
},
{
"text": "EUR 4,
166.25\n",
},
{
"text": "Total Due: ",
"font_weight": "bold",
},
{
"text": "EUR 54,
666.25",
},
]},
],
},
],
},
{"type": "separator"},
{"type": "paragraph", "runs": [
{
"text": "Payment Terms: ",
"font_weight": "bold",
},
{
"text": "Net 30. Please remit payment via wire transfer to Nordlicht Consulting GmbH,
Account #4821-7390-5512,
Routing #021000021.",
},
]},
],
},
)
package main
import il "github.com/iterationlayer/sdk-go"
func main() {
client := il.NewClient("YOUR_API_KEY")
result, err := client.GenerateDocument(il.GenerateDocumentRequest{
Format: "pdf",
Document: il.DocumentDefinition{
Metadata: il.DocumentMetadata{
Title: "Invoice #2026-0142",
Author: "Nordlicht Consulting GmbH",
},
Page: il.PageConfig{
Size: il.PageSize{Preset: "A4"},
Margins: il.Margins{
TopInPt: 72,
RightInPt: 72,
BottomInPt: 72,
LeftInPt: 72,
},
},
Content: []il.ContentBlock{
il.NewHeadlineBlock("h1", "Nordlicht Consulting GmbH"),
il.NewSeparatorBlock(),
il.NewHeadlineBlock("h3", "Bill To"),
il.ParagraphBlock{
Type: "paragraph",
Markdown: "**Northwind Industries**\nAttn: Sarah Chen,
VP of Operations",
},
il.NewSeparatorBlock(),
il.NewTableBlock([]il.TableRow{
{Cells: []il.TableCell{{Text: "Brand Strategy Workshop (2 days)"}, {
Text: "EUR 8,
500.00",
}}},
{Cells: []il.TableCell{{Text: "UI/UX Design Sprint (5 days)"}, {
Text: "EUR 15,
000.00",
}}},
{Cells: []il.TableCell{{Text: "Frontend Development"}, {
Text: "EUR 21,
000.00",
}}},
{Cells: []il.TableCell{{Text: "QA & User Acceptance Testing"}, {
Text: "EUR 6,
000.00",
}}},
}),
il.NewSeparatorBlock(),
il.ParagraphBlock{
Type: "paragraph",
Markdown: "**Total Due:** EUR 54,
666.25",
},
},
},
})
if err != nil {
panic(err)
}
}
{
"name": "Generate PDF Invoice",
"nodes": [
{
"parameters": {
"content": "## Generate PDF Invoice\n\nFinance teams and SaaS platforms use this recipe to generate a branded PDF invoice on demand. Define your company header, billing details, line items, and totals \u2014 ready to email or archive as part of your billing workflow.\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": "0cd9abf1-a462-4f97-990e-f7d563bf2e39",
"name": "Overview"
},
{
"parameters": {
"content": "### Step 1: Generate Document\nResource: **Document Generation**\n\nConfigure the Document Generation parameters below, then connect your credentials.",
"height": 160,
"width": 300,
"color": 6
},
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…(truncated)