Extract invoice data from Gmail PDFs to JSON, Google Sheets and Airtable β€” n8n Workflow

Medium complexity⚑ Trigger13 nodes🏷️ Invoice ProcessingπŸ‘ 1 viewsby Jitesh Dugar

Overview

Automated Invoice Intelligence: PDF-to-JSON Financial Orchestrator

🎯 Description This is an elite enterprise-grade solution for Accounts Payable and Finance Ops teams. It automates the high-volume extraction of unstructured data from PDF invoices using the HTML to PDF (Parse PDF to JSON) node, transforming raw email attachments into validated, audit-ready financial records across multiple platforms.

✨ The Sovereign Lifecycle Intelligent Intake & Validation - Monitors Gmail for incoming invoice

Nodes used

AirtableGoogle SheetsSlackGoogle DriveGmailCode

Workflow Preview

πŸ“₯ PHASE 1: Intake & Validation
Triggers on Gmail attachments. Validates PDF format, fi
πŸ”¬ PHASE 2: AI Parsing & Extraction
Parse PDF to JSON: Converts binary PDF to structured da
πŸš€ PHASE 3: Ledger Sync & Archival
Updates Google Sheets ledger, creates Airtable records,
⚠️ PHASE 4: Review Queue
Low confidence scores (<0.7) or high-value invoices (>$
πŸ’° Autonomous Invoice Extraction Hub (v11.0)
Industrial-grade pipeline for automated financial data
βš™οΈ Core Sovereign Logic
*
⚑
G
Gmail: Watch Invoices
I
IF: Valid PDF Attachment
Code: Pre-Processor
H
HTML to PDF: Parse to JSON
Code: AI Ledger Mapper
I
IF: Auto-Approve
Google Sheets: Add Row
Airtable: Create Record
Google Drive: Archive In…
Slack: Success Notificat…
Slack: Review Required
Google Sheets: Review Qu…
Gmail: Review Alert
13 nodes11 edges

How it Works

  1. 1

    Trigger

    The workflow starts with a trigger trigger.

  2. 2

    Process

    Data flows through 13 nodes, connecting airtable, code, gmail.

  3. 3

    Output

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

Node Details (13)

AI

Airtable

airtable

#1
GO

Google Sheets

googleSheets

#2
SL

Slack

slack

#3
GO

Google Drive

googleDrive

#4
GM

Gmail

gmail

#5
CO

Code

code

#6

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-gmail-pdfs-to-json-google-sheets-and-airtable 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 Gmail PDFs to JSON, Google Sheets and Airtable", "nodes": [...], ...}

Integrations

airtablecodegmailgmailtriggergoogledrivegooglesheetsifn8n-nodes-htmlcsstopdf.htmlcsstopdfslack

Get This Workflow

Download and import in one click

Download JSONView on n8n.io
Nodes13
Complexitymedium
Triggertrigger
Views1

Created by

Jitesh Dugar

Jitesh Dugar

@jiteshdugar

Tags

airtablecodegmailgmailtriggergoogledrivegooglesheetsifn8n-nodes-htmlcsstopdf.htmlcsstopdfslack
⚑

New to n8n?

n8n is a free, open-source workflow automation tool. Self-host it or use the cloud version.

Get n8n Free β†’

Related Invoice Processing Workflows

COCOEMEX+5
medium

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