Generate marketing reports from Google Sheets with GPT-4 insights and PDF.co

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Important notice

This workflow is provided as-is. Please review and test before using in production.

1. Workflow Overview

This workflow pulls marketing data from Google Sheets , aggregates spend by channel, generates an AI written summary , and outputs a formatted PDF report using a custom HTML template on PDF.co . ️...

Best for

Document Extraction automation workflows
Multimodal AI automation workflows
advanced n8n builders looking for reusable templates

Tools used

n8n-nodes-base.manualtrigger, @n8n/n8n-nodes-langchain.lmchatopenai, @n8n/n8n-nodes-langchain.outputparserstructured, n8n-nodes-base.stickynote, n8n-nodes-base.googlesheets, n8n-nodes-base.summarize, @n8n/n8n-nodes-langchain.agent, n8n-nodes-base.merge

Source and attribution

This workflow is cataloged by N8N Workflows and links back to its original n8n.io source page by Robert Breen.

Original n8n.io source

1.1 Workflow description

Title: Generate marketing reports from Google Sheets with GPT-4 insights and PDF.co
Workflow name: Generate marketing reports from Google Sheets with GPT-4 insights and PDF.co

This workflow pulls marketing data from Google Sheets, aggregates spend by channel, generates an AI-written summary, and outputs a formatted PDF report using a custom HTML template on PDF.co.

⚙️ Setup Instructions

1️⃣ Prepare Your Google Sheet

Copy this template into your Google Drive: Sample Marketing Data
Add or update your marketing spend data in rows 2–100.

Connect Google Sheets in n8n

Go to n8n → Credentials → New → Google Sheets (OAuth2)
Log in with your Google account and grant access
Select the Spreadsheet ID and Worksheet in the workflow

2️⃣ Set Up PDF.co for PDF Reports

Create a free account at PDF.co
In PDF.co Dashboard → HTML to PDF Templates, create a new Mustache template
- Paste the HTML provided at the bottom of this description
- Save, and note your Template ID
In n8n → Credentials → New → PDF.co API, paste your API Key and save
In the workflow, select your PDF.co credential in the Create PDF node
Replace the templateId with your Template ID

🧠 How It Works

Google Sheets Node: Pulls marketing spend data
Summarize Nodes: Aggregate total spend and spend per channel
OpenAI Node: Writes a daily summary of marketing performance
Code Node: Converts aggregated data into the correct shape for the PDF template
PDF.co Node: Generates a final, formatted PDF report

📬 Contact

Need help customizing this (e.g., filtering by campaign, sending reports by email, or formatting your PDF)?

📧 [email protected]
🔗 Robert Breen
🌐 ynteractive.com

📄 HTML Template (for PDF.co)

> Paste this into a new HTML Template on PDF.co and reference its Template ID in your workflow.

&lt;!DOCTYPE html&gt;
&lt;html&gt;
&lt;head&gt;
  &lt;meta charset="utf-8" /&gt;
  &lt;title&gt;Invoice {{invoiceNumber}}&lt;/title&gt;
  &lt;style&gt;
    body { font-family: Arial, Helvetica, sans-serif; margin: 36px; color: #222; }
    .header { display: flex; justify-content: space-between; align-items: center; }
    .brand { max-height: 56px; }
    h1 { margin: 12px 0 4px; font-size: 22px; }
    .meta { font-size: 12px; color: #555; }
    .two-col { display: flex; gap: 24px; margin-top: 16px; }
    .box { flex: 1; border: 1px solid #ddd; padding: 12px; border-radius: 6px; }
    .label { font-size: 11px; color: #666; text-transform: uppercase; letter-spacing: .02em; }
    table { width: 100%; border-collapse: collapse; margin-top: 16px; }
    th, td { border-bottom: 1px solid #eee; padding: 10px 8px; font-size: 13px; }
    th { background: #fafafa; text-align: left; }
    tfoot td { border-top: 2px solid #ddd; font-size: 13px; }
    .right { text-align: right; }
    .totals td { padding: 6px 8px; }
    .grand { font-weight: 700; font-size: 14px; }
    .notes { margin-top: 18px; font-size: 12px; color: #444; }
  &lt;/style&gt;
&lt;/head&gt;
&lt;body&gt;
  <div>
    <div>
      <h1>Invoice {{invoiceNumber}}</h1>
      <div>Date: {{invoiceDate}} &nbsp; | &nbsp; Due: {{dueDate}}</div>
    </div>
    {{#company.logoUrl}}
    <img src alt="Logo" />
    {{/company.logoUrl}}
  </div>

  <div>
    <div>
      <div>From</div>
      <div><strong>{{company.name}}</strong></div>
      <div>{{company.address}}</div>
      <div>{{company.phone}}</div>
      <div>{{company.email}}</div>
    </div>
    <div>
      <div>Bill To</div>
      <div><strong>{{billTo.name}}</strong></div>
      <div>{{billTo.address}}</div>
      <div>{{billTo.email}}</div>
    </div>
  </div>

  <table>
    <thead>
      <tr>
        <th>#</th>
        <th>Description</th>
        <th>Qty</th>
        <th>Unit Price</th>
        <th>Line Total</th>
      </tr>
    </thead>
    <tbody>
      {{#items}}
      <tr>
        <td>{{line}}</td>
        <td>{{description}}</td>
        <td>{{qty}}</td>
        <td>{{unitPriceFmt}}</td>
        <td>{{lineTotalFmt}}</td>
      </tr>
      {{/items}}
    </tbody>
    <tfoot>
      <tr>
        <td colspan="4">Subtotal</td>
        <td>{{subTotalFmt}}</td>
      </tr>
      <tr>
        <td colspan="4">Tax ({{taxRatePct}})</td>
        <td>{{taxAmountFmt}}</td>
      </tr>
      <tr>
        <td colspan="4">Discount</td>
        <td>-{{discountFmt}}</td>
      </tr>
      <tr>
        <td colspan="4">Total</td>
        <td>{{totalFmt}}</td>
      </tr>
    </tfoot>
  </table>

  <div>
    <strong>Notes:</strong> {{notes}}<br />
    <strong>Terms:</strong> {{terms}}
  </div>
&lt;/body&gt;
&lt;/html&gt;

1.2 Logical Blocks

This catalog entry is organized from the workflow JSON. The node-level section below shows the executable blocks available for review before importing the template.

2. Block-by-Block Analysis

Block 1 - When clicking ‘Execute workflow’

Type / Role: n8n-nodes-base.manualTrigger - manualTrigger
Config choices: Version 1

Block 2 - OpenAI Chat Model

Type / Role: @n8n/n8n-nodes-langchain.lmChatOpenAi - lmChatOpenAi
Config choices: Version 1.2

Block 3 - Structured Output Parser

Type / Role: @n8n/n8n-nodes-langchain.outputParserStructured - outputParserStructured
Config choices: Version 1.3

Block 4 - Sticky Note53

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 5 - Sticky Note1

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 6 - Get Marketing Data

Type / Role: n8n-nodes-base.googleSheets - googleSheets
Config choices: Version 4.7

Block 7 - Sum Spend by Channel

Type / Role: n8n-nodes-base.summarize - summarize
Config choices: Version 1.1

Block 8 - Sum Spend

Type / Role: n8n-nodes-base.summarize - summarize
Config choices: Version 1.1

Block 9 - Write Summary

Type / Role: @n8n/n8n-nodes-langchain.agent - agent
Config choices: Version 2.2

Block 10 - Combine All

Type / Role: n8n-nodes-base.merge - merge
Config choices: Version 3.2

Block 11 - Convert to PDF Upload

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Block 12 - Create PDF

Type / Role: n8n-nodes-pdfco.PDFco Api - PDFco Api
Config choices: Version 1

Block 13 - Covert to 1 row

Type / Role: n8n-nodes-base.aggregate - aggregate
Config choices: Version 1

Block 14 - Sticky Note59

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 15 - Sticky Note60

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

3. Summary Table

Workflow	Generate marketing reports from Google Sheets with GPT-4 insights and PDF.co
Complexity	advanced
Nodes	15
Categories	Document Extraction, Multimodal AI
Author	Robert Breen
Published	26 Aug 2025

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/7861/7861.json as the source template for this automation.
2. Import the template into n8n

Open n8n, import the downloaded JSON, and review each node before activating the workflow.
3. Configure credentials and variables

Replace placeholder credentials, API keys, webhook URLs, account IDs, and environment-specific values with your own settings.
4. Test with sample data

Run the workflow manually or in a staging workspace, inspect node output, and confirm downstream systems receive the expected data.
5. Activate and monitor

Enable the workflow only after testing, then monitor executions, errors, and rate limits during the first production runs.

5. General Notes & Resources

Review imported nodes carefully before activation. This catalog entry is intended to help you inspect the workflow structure, understand required services, and find related templates faster.

Node names, credentials, schedules, webhook paths, and external service limits may need adjustment for your workspace.

Download workflow JSON Original n8n.io source Document Extraction workflows Multimodal AI workflows

Frequently asked questions

What does Generate marketing reports from Google Sheets with GPT-4 insights and PDF.co do?

What do I need before importing this workflow?

Review the workflow JSON, configure any required credentials in n8n, and test the automation in a safe workspace before using it in production.

Can I customize this workflow?

Yes. Use the block-by-block analysis and the downloadable JSON to inspect each node, then adjust credentials, prompts, schedules, filters, or destinations for your Document Extraction, Multimodal AI use case.

Robert Breen

90 workflows

Nodes

n8n-nodes-base.manualtrigger @n8n/n8n-nodes-langchain.lmchatopenai @n8n/n8n-nodes-langchain.outputparserstructured n8n-nodes-base.stickynote n8n-nodes-base.googlesheets n8n-nodes-base.summarize @n8n/n8n-nodes-langchain.agent n8n-nodes-base.merge

Complexity

advanced

Published 26 Aug 2025

Likes 0

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Install path: /data/workflows/7861/7861.json

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Generate marketing reports from Google Sheets with GPT-4 insights and PDF.co

Workflow preview

Important notice

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

⚙️ Setup Instructions

1️⃣ Prepare Your Google Sheet

Connect Google Sheets in n8n

2️⃣ Set Up PDF.co for PDF Reports

🧠 How It Works

📬 Contact

📄 HTML Template (for PDF.co)

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - When clicking ‘Execute workflow’

Block 2 - OpenAI Chat Model

Block 3 - Structured Output Parser

Block 4 - Sticky Note53

Block 5 - Sticky Note1

Block 6 - Get Marketing Data

Block 7 - Sum Spend by Channel

Block 8 - Sum Spend

Block 9 - Write Summary

Block 10 - Combine All

Block 11 - Convert to PDF Upload

Block 12 - Create PDF

Block 13 - Covert to 1 row

Block 14 - Sticky Note59

Block 15 - Sticky Note60

3. Summary Table

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

2. Import the template into n8n

3. Configure credentials and variables

4. Test with sample data

5. Activate and monitor

5. General Notes & Resources

Frequently asked questions