Extract data from PDF reports with Gmail, OCR, Google Sheets and OpenAI GPT-4.1-mini

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1. Workflow Overview

Who’s it for Consultants, agencies, financial analysts, and project managers who regularly receive client PDFs, invoices, or reports. How it works / What it does This n8n workflow automates PDF and...

Best for

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

Tools used

n8n-nodes-base.gmailtrigger, n8n-nodes-base.set, n8n-nodes-base.if, n8n-nodes-base.extractfromfile, @n8n/n8n-nodes-langchain.agent, @n8n/n8n-nodes-langchain.lmchatopenai, @n8n/n8n-nodes-langchain.outputparserstructured, n8n-nodes-base.switch

Source and attribution

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

Original n8n.io source

1.1 Workflow description

Title: Extract data from PDF reports with Gmail, OCR, Google Sheets and OpenAI GPT-4.1-mini
Workflow name: Extract data from PDF reports with Gmail, OCR, Google Sheets and OpenAI GPT-4.1-mini

Who’s it for

Consultants, agencies, financial analysts, and project managers who regularly receive client PDFs, invoices, or reports.

How it works / What it does

This n8n workflow automates PDF and report data extraction:

Triggers when a new PDF is uploaded to Google Drive, Dropbox, or received via email.
Uses OCR (PDF.co or Cloud OCR) to extract text from PDFs.
Parses key data fields using OpenAI or Regex:

Client Name
Project/Report Name
Dates
Financials / Metrics

Normalizes extracted data with a Set node for consistency.
Classifies document type (invoice, report, contract).
Routes data based on type:

Invoice → Update Google Sheets / QuickBooks / Xero
Report → Summarize metrics using AI
Contract → Notify relevant team members

Logs extracted data in Google Sheets.
Optional: Sends notifications via Slack or email.
Error handling included for unreadable or incomplete PDFs.
Includes logging for audit and tracking purposes.

How to set up

Connect Google Drive, Dropbox, or Gmail for PDF input.
Configure OCR node for accurate text extraction.
Connect OpenAI API for parsing and summarizing key metrics.
Set up Google Sheets or accounting software to store extracted data.
Optional: Configure Slack or email notifications for summaries.
Test workflow with sample PDFs to ensure data extraction and routing works correctly.

Requirements

n8n account with integrations for Google Drive, Dropbox, Gmail, Sheets.
OCR service (PDF.co or Cloud OCR).
OpenAI API key for data parsing.

How to customize

Adjust AI parsing rules for your specific fields.
Customize routing to different software (QuickBooks, Xero, Sheets).
Add additional notifications or automation steps as needed.

Created by Hyrum Hurst / QuarterSmart Keywords: AI PDF extraction, report parsing automation, n8n workflow, invoice extraction, consultant workflow, QuarterSmart

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 - New PDF Email Trigger

Type / Role: n8n-nodes-base.gmailTrigger - gmailTrigger
Config choices: Version 1.3

Block 2 - Workflow Configuration

Type / Role: n8n-nodes-base.set - set
Config choices: Version 3.4

Block 3 - Check PDF Attachment Exists

Type / Role: n8n-nodes-base.if - if
Config choices: Version 2.3

Block 4 - Extract Text from PDF

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

Block 5 - Parse Key Fields with AI

Type / Role: @n8n/n8n-nodes-langchain.agent - agent
Config choices: Version 3

Block 6 - OpenAI Chat Model

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

Block 7 - Structured Output Parser

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

Block 8 - Normalize Extracted Data

Type / Role: n8n-nodes-base.set - set
Config choices: Version 3.4

Block 9 - Classify Document Type

Type / Role: n8n-nodes-base.switch - switch
Config choices: Version 3.4

Block 10 - Store Invoice Data

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

Block 11 - Summarize Report with AI

Type / Role: @n8n/n8n-nodes-langchain.agent - agent
Config choices: Version 3

Block 12 - OpenAI Chat Model for Summary

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

Block 13 - Notify Contract Team

Type / Role: n8n-nodes-base.slack - slack
Config choices: Version 2.4

Block 14 - Store All Extracted Data

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

Block 15 - Send Summary Notification

Type / Role: n8n-nodes-base.slack - slack
Config choices: Version 2.4

Block 16 - Error Handler and Logger

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

Block 17 - Sticky Note

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

Block 18 - Sticky Note1

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

Block 19 - Sticky Note2

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

Block 20 - Sticky Note3

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

Block 21 - Sticky Note4

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

Block 22 - Sticky Note5

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

3. Summary Table

Workflow	Extract data from PDF reports with Gmail, OCR, Google Sheets and OpenAI GPT-4.1-mini
Complexity	advanced
Nodes	22
Categories	Document Extraction, AI Summarization
Author	Hyrum Hurst
Published	24 Jan 2026

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/12961/12961.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 AI Summarization workflows

Frequently asked questions

What does Extract data from PDF reports with Gmail, OCR, Google Sheets and OpenAI GPT-4.1-mini 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, AI Summarization use case.

Hyrum Hurst

25 workflows

Nodes

n8n-nodes-base.gmailtrigger n8n-nodes-base.set n8n-nodes-base.if n8n-nodes-base.extractfromfile @n8n/n8n-nodes-langchain.agent @n8n/n8n-nodes-langchain.lmchatopenai @n8n/n8n-nodes-langchain.outputparserstructured n8n-nodes-base.switch

Complexity

advanced

Published 24 Jan 2026

Likes 0

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Install path: /data/workflows/12961/12961.json

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Extract data from PDF reports with Gmail, OCR, Google Sheets and OpenAI GPT-4.1-mini

Workflow preview

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

Who’s it for

How it works / What it does

How to set up

Requirements

How to customize

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - New PDF Email Trigger

Block 2 - Workflow Configuration

Block 3 - Check PDF Attachment Exists

Block 4 - Extract Text from PDF

Block 5 - Parse Key Fields with AI

Block 6 - OpenAI Chat Model

Block 7 - Structured Output Parser

Block 8 - Normalize Extracted Data

Block 9 - Classify Document Type

Block 10 - Store Invoice Data

Block 11 - Summarize Report with AI

Block 12 - OpenAI Chat Model for Summary

Block 13 - Notify Contract Team

Block 14 - Store All Extracted Data

Block 15 - Send Summary Notification

Block 16 - Error Handler and Logger

Block 17 - Sticky Note

Block 18 - Sticky Note1

Block 19 - Sticky Note2

Block 20 - Sticky Note3

Block 21 - Sticky Note4

Block 22 - Sticky Note5

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