Extract & Structure Invoice Data with Google Vision OCR, Gemini LLM & Google Sheets — Workflow n8n

Moyen complexité⚡ Déclencheur12 nœuds🏷️ Invoice Processingpar Budi SJ

Aperçu

Automated Invoice Collection & Data Extraction Using Vision API and LLM

This workflow automates the process of collecting uploaded invoices, extracting text using Google Vision API, and processing the extracted text with an LLM to produce structured data containing key transaction details such as date, voucher number, transaction detail, vendor, and transaction value.
The final data is saved to Google Sheets and a notification is sent to Telegram in real time.

✨ Key Features Invoice Upload F

Nœuds utilisés

Google SheetsHTTP RequestTelegramGoogle DriveCodeBasic LLM ChainStructured Output ParserOpenRouter Chat Model

Aperçu du workflow

Automated Invoice Collection & Data Extractio
This workflow automates the process of collecting uploa
- This node triggers the workflow when a user
- Uploads the file received from the form into a specif
- Downloads the file from
- Converts the downloaded invoice file (binar
- Adds the Google Vision API key into the workflow data
- Processes OCR text through an LLM to extrac
- Forces the LLM to produce output in a fixed JSON sche
- Cleans and normalizes numeric fields from the LLM out
- Writes the extracted and cleaned invoice da
- Sends a Telegram message summarizing the new or updat
modelparser
S
Set Vision API
Basic LLM Chain
OpenRouter Chat Model
Structured Output Parser
Download file
HTTP Request
Send a text message
Upload file
Code
Code1
Append or update row in …
⚡
O
On form submission
12 nodes11 edges

Comment ça fonctionne

  1. 1

    Déclencheur

    Le workflow démarre avec un déclencheur déclencheur.

  2. 2

    Traitement

    Les données transitent par 12 nœuds, connecting chainllm, code, formtrigger.

  3. 3

    Sortie

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

Détails des nœuds (12)

GO

Google Sheets

googleSheets

#1
HT

HTTP Request

httpRequest

#2
TE

Telegram

telegram

#3
GO

Google Drive

googleDrive

#4
CO

Code

code

#5
BA

Basic LLM Chain

n8n-nodes-langchain.chainLlm

#6
ST

Structured Output Parser

n8n-nodes-langchain.outputParserStructured

#7
OP

OpenRouter Chat Model

n8n-nodes-langchain.lmChatOpenRouter

#8

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-structure-invoice-data-with-google-vision-ocr-gemini-llm-google-sheets 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 & Structure Invoice Data with Google Vision OCR, Gemini LLM & Google Sheets", "nodes": [...], ...}

Intégrations

chainllmcodeformtriggergoogledrivegooglesheetshttprequestlmchatopenrouteroutputparserstructuredsettelegram

Obtenir ce workflow

Téléchargez et importez en un clic

Télécharger JSONVoir sur n8n.io
Nœuds12
Complexitémedium
Déclencheurtrigger
CatégorieInvoice Processing

Créé par

Budi SJ

Budi SJ

@budisj

Tags

chainllmcodeformtriggergoogledrivegooglesheetshttprequestlmchatopenrouteroutputparserstructuredsettelegram
⚡

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🔗 Webhook·12 nodes