Extract Invoice Data from PDFs with Gemini AI to Google Sheets πŸ“„ β€” n8n Workflow

High complexity⚑ Trigger17 nodes🏷️ Invoice Processingby Louis

Overview

πŸ“„ 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 Loggi

Nodes used

Google SheetsHTTP RequestGoogle DriveGmailCodeAI AgentStructured Output ParserGoogle Gemini Chat Model

Workflow Preview

modelmodelparser
C
Compare Datasets1
E
Extract from File1
Google Gemini Chat Model2
Log the processing of th…
Cleans output1
Get list of pdf files1
Read processed docs1
AI Agent - get targeted …
⚑
G
Google Drive Trigger1
Download file1
Structured Output Parser1
Google Gemini Chat Model3
L
Limit1
Send a message1
Update invoice Fields1
L
Loop Over Items1
Code in JavaScript1
17 nodes18 edges

How it Works

  1. 1

    Trigger

    The workflow starts with a trigger trigger.

  2. 2

    Process

    Data flows through 17 nodes, connecting agent, code, comparedatasets.

  3. 3

    Output

    The workflow completes its automation and delivers the result to the configured destination.

Node Details (17)

GO

Google Sheets

googleSheets

#1
HT

HTTP Request

httpRequest

#2
GO

Google Drive

googleDrive

#3
GM

Gmail

gmail

#4
CO

Code

code

#5
AI

AI Agent

n8n-nodes-langchain.agent

#6
ST

Structured Output Parser

n8n-nodes-langchain.outputParserStructured

#7
GO

Google Gemini Chat Model

n8n-nodes-langchain.lmChatGoogleGemini

#8

How to Import This Workflow

  1. 1Click Download JSON button on the right to save the workflow file.
  2. 2Open your n8n instance. Go to Workflows β†’ New β†’ Import from file.
  3. 3Select the downloaded extract-invoice-data-from-pdfs-with-gemini-ai-to-google-sheets file and click Import.
  4. 4Set up credentials for each service node (API keys, OAuth, etc.).
  5. 5Click Test Workflow to verify everything works, then activate it.

Or paste directly in n8n β†’ Import from JSON:

{ "name": "Extract Invoice Data from PDFs with Gemini AI to Google Sheets πŸ“„", "nodes": [...], ...}

Integrations

agentcodecomparedatasetsextractfromfilegmailgoogledrivegoogledrivetriggergooglesheetshttprequestlimitlmchatgooglegeminioutputparserstructuredsplitinbatches

Get This Workflow

Download and import in one click

Download JSONView on n8n.io
Nodes17
Complexityhigh
Triggertrigger
CategoryInvoice Processing

Created by

Louis

Louis

@louisdl

Tags

agentcodecomparedatasetsextractfromfilegmailgoogledrivegoogledrivetriggergooglesheetshttprequestlimit
⚑

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Automate Custom QuickBooks Invoice PDFs & Email with n8n

Standard accounting templates often fail to reflect a premium brand identity. This sophisticated n8n workflow bridges the gap between financial record-keeping and professional client presentation. By moving beyond the native limitations of QuickBooks Online, this automation enables businesses to generate high-end, multi-page PDF invoices that align perfectly with their corporate styling. The process begins the moment a new invoice is generated in QuickBooks, triggering a webhook that captures real-time billing data. The workflow then utilizes advanced HTML-to-File conversion and custom Code nodes to structure data into a polished, branded layout. It handles complex logic such as line-item merging and multi-page formatting automatically. Once the document is rendered, the system bypasses generic 'no-reply' senders by routing the finalized PDF through your preferred email provider. This ensures a seamless, white-labeled experience for your clients while eliminating the manual overhead of exporting, styling, and attaching files. Ideal for agencies and service providers, this flow guarantees that your most frequent touchpointβ€”the billβ€”is as professional as your work. **Common Use Cases:** - High-end creative agencies requiring bespoke, white-labeled billing documents for premium clients. - Automated recurring subscription billing where custom tax disclosures or localized branding are required. - Service-based businesses needing to attach dynamic project reports or terms of service directly to QuickBooks invoices.

πŸ”— WebhookΒ·12 nodes