Extract order details from LINE messages and photos to Google Sheets with OpenAI

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1. Workflow Overview

Extract order details from LINE messages and photos to Google Sheets with OpenAI Automatically extract order information from text messages or handwritten memo photos sent via LINE, confirm with th...

Best for

Document Extraction automation workflows
AI Chatbot automation workflows
intermediate n8n builders looking for reusable templates

Tools used

n8n-nodes-base.stickynote, n8n-nodes-base.googlesheetstool, @aotoki/n8n-nodes-line-messaging.linemessaging, @aotoki/n8n-nodes-line-messaging.linemessagingdata, n8n-nodes-base.switch, @n8n/n8n-nodes-langchain.agent, @n8n/n8n-nodes-langchain.lmchatopenai, @n8n/n8n-nodes-langchain.memorybufferwindow

Source and attribution

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

Original n8n.io source

1.1 Workflow description

Title: Extract order details from LINE messages and photos to Google Sheets with OpenAI
Workflow name: Extract order details from LINE messages and photos to Google Sheets with OpenAI

Extract order details from LINE messages and photos to Google Sheets with OpenAI

Automatically extract order information from text messages or handwritten memo photos sent via LINE, confirm with the user, and append to a Google Sheets tracking sheet.

How it works

Receives text or image messages from LINE Messaging API
Routes messages by type — text goes directly to the AI Agent, images are first downloaded via LINE API
The AI Agent (GPT-4o) analyzes the input, extracts order details, and asks the user for confirmation
Once approved, the order is appended as a new row in Google Sheets

Setup steps

LINE Messaging API: Create a LINE channel and set the webhook URL to this workflow's trigger endpoint
OpenAI Credentials: Set up your OpenAI API key in n8n Credentials
Google Sheets Credentials: Set up Google Sheets OAuth2 in n8n Credentials
Configure Spreadsheet: Open the "Append Row to Google Sheets" node and set your Spreadsheet ID and sheet name
Activate the workflow

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 - Workflow Overview

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

Block 2 - Routing Section

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

Block 3 - Append Row to Google Sheets

Type / Role: n8n-nodes-base.googleSheetsTool - googleSheetsTool
Config choices: Version 4.7

Block 4 - Reply via LINE

Type / Role: @aotoki/n8n-nodes-line-messaging.lineMessaging - lineMessaging
Config choices: Version 1

Block 5 - Download LINE Image

Type / Role: @aotoki/n8n-nodes-line-messaging.lineMessagingData - lineMessagingData
Config choices: Version 1

Block 6 - Route by Message Type

Type / Role: n8n-nodes-base.switch - switch
Config choices: Version 3.4

Block 7 - AI Processing Section1

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

Block 8 - AI Agent - Order Extractor1

Type / Role: @n8n/n8n-nodes-langchain.agent - agent
Config choices: Version 1.7

Block 9 - OpenAI GPT-4o1

Type / Role: @n8n/n8n-nodes-langchain.lmChatOpenAi - lmChatOpenAi
Config choices: Version 1.2

Block 10 - Simple Memory - Chat History1

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

Block 11 - Line Messaging Trigger1

Type / Role: @aotoki/n8n-nodes-line-messaging.lineMessagingTrigger - lineMessagingTrigger
Config choices: Version 1

3. Summary Table

Workflow	Extract order details from LINE messages and photos to Google Sheets with OpenAI
Complexity	intermediate
Nodes	11
Categories	Document Extraction, AI Chatbot
Author	daisuke
Published	20 Feb 2026

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/13531/13531.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 Document Extraction workflows AI Chatbot workflows

Frequently asked questions

What does Extract order details from LINE messages and photos to Google Sheets with OpenAI do?

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 Document Extraction, AI Chatbot use case.

daisuke

2 workflows

Nodes

n8n-nodes-base.stickynote n8n-nodes-base.googlesheetstool @aotoki/n8n-nodes-line-messaging.linemessaging @aotoki/n8n-nodes-line-messaging.linemessagingdata n8n-nodes-base.switch @n8n/n8n-nodes-langchain.agent @n8n/n8n-nodes-langchain.lmchatopenai @n8n/n8n-nodes-langchain.memorybufferwindow

Complexity

intermediate

Published 20 Feb 2026

Likes 0

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Install path: /data/workflows/13531/13531.json

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Extract order details from LINE messages and photos to Google Sheets with OpenAI

Workflow preview

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

Extract order details from LINE messages and photos to Google Sheets with OpenAI

How it works

Setup steps

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - Workflow Overview

Block 2 - Routing Section

Block 3 - Append Row to Google Sheets

Block 4 - Reply via LINE

Block 5 - Download LINE Image

Block 6 - Route by Message Type

Block 7 - AI Processing Section1

Block 8 - AI Agent - Order Extractor1

Block 9 - OpenAI GPT-4o1

Block 10 - Simple Memory - Chat History1

Block 11 - Line Messaging Trigger1

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