Extract invoice data from PDFs with Gemini AI to Google Sheets 📄

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Important notice

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

1. Workflow Overview

Automated Invoice Processing (n8n + AI + Google Workspace) This workflow automates the extraction and processing of invoice data from PDFs stored in a Google Drive folder. It leverages Google Dr...

Best for

Invoice Processing automation workflows
AI Summarization automation workflows
advanced n8n builders looking for reusable templates

Tools used

n8n-nodes-base.stickynote, n8n-nodes-base.comparedatasets, n8n-nodes-base.extractfromfile, @n8n/n8n-nodes-langchain.lmchatgooglegemini, n8n-nodes-base.googlesheets, n8n-nodes-base.code, n8n-nodes-base.httprequest, @n8n/n8n-nodes-langchain.agent

Source and attribution

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

Original n8n.io source

1.1 Workflow description

Title: Extract invoice data from PDFs with Gemini AI to Google Sheets 📄
Workflow name: Extract invoice data from PDFs with Gemini AI to Google Sheets 📄

📄 Automated Invoice Processing (n8n + AI + Google Workspace)

This workflow automates the extraction and processing of invoice data from PDFs stored in a Google Drive folder. It leverages Google Drive, Google Sheets, and Gemini AI to streamline invoice management.

Key Features

Automatic Detection: Monitors a Google Drive folder for new invoices.
AI-Powered Extraction: Uses Gemini AI to extract structured data including Supplier, Buyer, Items, Total Amount, Tax, and Payment Terms.
Data Logging: Appends extracted invoice information to a Google Sheet and tracks processed documents to avoid duplicates.
Notifications: Sends email alerts once invoices are successfully processed.
Flexible & Extensible: Can be integrated with ERP/CRM systems, Slack/Telegram notifications, or OCR for scanned PDFs.

💡 Perfect for: Small to medium businesses, accountants, and operations teams looking to reduce manual invoice data entry and improve accuracy.

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 - Intro Sticky

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

Block 2 - Setup Sticky

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

Block 3 - AI Extraction Sticky

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

Block 4 - Data Split Sticky

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

Block 5 - Google Sheets Sticky

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

Block 6 - Gmail Sticky

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

Block 7 - Extend Sticky

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

Block 8 - Compare Datasets1

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

Block 9 - Extract from File1

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

Block 10 - Google Gemini Chat Model2

Type / Role: @n8n/n8n-nodes-langchain.lmChatGoogleGemini - lmChatGoogleGemini
Config choices: Version 1

Block 11 - Log the processing of the doc1

Type / Role: n8n-nodes-base.googleSheets - googleSheets
Config choices: Version 4.5

Block 12 - Cleans output1

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

Block 13 - Get list of pdf files1

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.2

Block 14 - Read processed docs1

Type / Role: n8n-nodes-base.googleSheets - googleSheets
Config choices: Version 4.5

Block 15 - Sticky Note4

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

Block 16 - Sticky Note5

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

Block 17 - AI Agent - get targeted elements from text1

Type / Role: @n8n/n8n-nodes-langchain.agent - agent
Config choices: Version 1.9

Block 18 - Sticky Note7

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

Block 19 - Google Drive Trigger1

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

Block 20 - Download file1

Type / Role: n8n-nodes-base.googleDrive - googleDrive
Config choices: Version 3

Block 21 - Structured Output Parser1

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

Block 22 - Google Gemini Chat Model3

Type / Role: @n8n/n8n-nodes-langchain.lmChatGoogleGemini - lmChatGoogleGemini
Config choices: Version 1

Block 23 - Limit1

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

Block 24 - Send a message1

Type / Role: n8n-nodes-base.gmail - gmail
Config choices: Version 2.1

Showing the first 24 of 28 workflow blocks. Download the JSON for the full node graph.

3. Summary Table

Workflow	Extract invoice data from PDFs with Gemini AI to Google Sheets 📄
Complexity	advanced
Nodes	28
Categories	Invoice Processing, AI Summarization
Author	Louis
Published	04 Oct 2025

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/9261/9261.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 Invoice Processing workflows AI Summarization workflows

Frequently asked questions

What does Extract invoice data from PDFs with Gemini AI to Google Sheets 📄 do?

Automated Invoice Processing (n8n + AI + Google Workspace) This workflow automates the extraction and processing of invoice data from PDFs stored in a Google Drive folder. It leverages Google Dr...

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 Invoice Processing, AI Summarization use case.

Louis

11 workflows

Nodes

n8n-nodes-base.stickynote n8n-nodes-base.comparedatasets n8n-nodes-base.extractfromfile @n8n/n8n-nodes-langchain.lmchatgooglegemini n8n-nodes-base.googlesheets n8n-nodes-base.code n8n-nodes-base.httprequest @n8n/n8n-nodes-langchain.agent

Complexity

advanced

Published 04 Oct 2025

Likes 0

View on n8n.io Download Workflow

Install path: /data/workflows/9261/9261.json

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Extract invoice data from PDFs with Gemini AI to Google Sheets 📄

Workflow preview

Important notice

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

📄 Automated Invoice Processing (n8n + AI + Google Workspace)

Key Features

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - Intro Sticky

Block 2 - Setup Sticky

Block 3 - AI Extraction Sticky

Block 4 - Data Split Sticky

Block 5 - Google Sheets Sticky

Block 6 - Gmail Sticky

Block 7 - Extend Sticky

Block 8 - Compare Datasets1

Block 9 - Extract from File1

Block 10 - Google Gemini Chat Model2

Block 11 - Log the processing of the doc1

Block 12 - Cleans output1

Block 13 - Get list of pdf files1

Block 14 - Read processed docs1

Block 15 - Sticky Note4

Block 16 - Sticky Note5

Block 17 - AI Agent - get targeted elements from text1

Block 18 - Sticky Note7

Block 19 - Google Drive Trigger1

Block 20 - Download file1

Block 21 - Structured Output Parser1

Block 22 - Google Gemini Chat Model3

Block 23 - Limit1

Block 24 - Send a message1

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