Extract Invoice Data from Slack PDFs to Google Sheets with GPT-4o — Workflow n8n

Moyen complexité⚡ Déclencheur8 nœuds🏷️ Invoice Processingpar Toshiki Hirao

Aperçu

Managing invoices manually can be time-consuming and error-prone. This workflow automates the process by extracting key invoice details from PDFs shared in Slack, structuring the information with AI, saving it to Google Sheets, and sending a confirmation back to Slack. It’s a seamless way to keep your financial records organized without manual data entry.

How it works Receive invoice in Slack – When a PDF invoice is uploaded to a designated Slack channel, the workflow is triggered. Fetch the PD

Nœuds utilisés

Google SheetsHTTP RequestSlackAI AgentOpenAI Chat ModelStructured Output Parser

Aperçu du workflow

How it works
1. Receive invoice in Slack – When a PDF invoice is upl
2. Fetch the PDF – The file is downloaded automatically
Workflow
Automate Invoice Extraction from Slack to Google Sheets
Introduction
Managing invoices manually can be time-consuming and er
modelparser
Append row in sheet
Send a message
Structure Output
AI model
⚡
R
Receive invoice pdf
Fetch the pdf
E
Extract information from…
Extract invoice informat…
8 nodes7 edges

Comment ça fonctionne

  1. 1

    Déclencheur

    Le workflow démarre avec un déclencheur déclencheur.

  2. 2

    Traitement

    Les données transitent par 8 nœuds, connecting agent, extractfromfile, googlesheets.

  3. 3

    Sortie

    Le workflow termine son automatisation et livre le résultat à la destination configurée.

Détails des nœuds (8)

GO

Google Sheets

googleSheets

#1
HT

HTTP Request

httpRequest

#2
SL

Slack

slack

#3
AI

AI Agent

n8n-nodes-langchain.agent

#4
OP

OpenAI Chat Model

n8n-nodes-langchain.lmChatOpenAi

#5
ST

Structured Output Parser

n8n-nodes-langchain.outputParserStructured

#6

Comment importer ce workflow

  1. 1Cliquez sur le bouton Télécharger JSON à droite pour enregistrer le fichier du workflow.
  2. 2Ouvrez votre instance n8n. Accédez à Workflows → Nouveau → Importer depuis un fichier.
  3. 3Sélectionnez le fichier extract-invoice-data-from-slack-pdfs-to-google-sheets-with-gpt-4o téléchargé et cliquez sur Importer.
  4. 4Configurez les identifiants pour chaque nœud de service (clés API, OAuth, etc.).
  5. 5Cliquez sur Tester le workflow pour vérifier que tout fonctionne, puis activez-le.

Ou collez directement dans n8n → Importer depuis JSON :

{ "name": "Extract Invoice Data from Slack PDFs to Google Sheets with GPT-4o", "nodes": [...], ...}

Intégrations

agentextractfromfilegooglesheetshttprequestlmchatopenaioutputparserstructuredslackslacktrigger

Obtenir ce workflow

Téléchargez et importez en un clic

Télécharger JSONVoir sur n8n.io
Nœuds8
Complexitémedium
Déclencheurtrigger
CatégorieInvoice Processing

Créé par

Toshiki Hirao

Toshiki Hirao

@hirao

Tags

agentextractfromfilegooglesheetshttprequestlmchatopenaioutputparserstructuredslackslacktrigger
⚡

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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 touchpoint—the bill—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.

🔗 Webhook·12 nodes