Auto-generate Instagram carousels with GPT-Image-1 & AI captions from Google Sheets

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Important notice

This workflow is provided as-is. Please review and test before using in production.

1. Workflow Overview

Instagram Carousel Scheduler A tool to automatically publish Instagram carousels using a , , and the number of images you want to post — all directly from a Google Sheet. At the end of each post...

Best for

Multimodal AI automation workflows
advanced n8n builders looking for reusable templates

Tools used

@n8n/n8n-nodes-langchain.chainllm, @n8n/n8n-nodes-langchain.outputparseritemlist, @n8n/n8n-nodes-langchain.lmchatopenai, n8n-nodes-base.splitinbatches, n8n-nodes-base.httprequest, n8n-nodes-base.splitout, n8n-nodes-base.converttofile, n8n-nodes-base.wait

Source and attribution

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

Original n8n.io source

1.1 Workflow description

Title: Auto-generate Instagram carousels with GPT-Image-1 & AI captions from Google Sheets
Workflow name: Auto-generate Instagram carousels with GPT-Image-1 & AI captions from Google Sheets

🧰 Instagram Carousel Scheduler

A tool to automatically publish Instagram carousels using a `Post Description`, `Instructions`, and the number of images you want to post — all directly from a Google Sheet. At the end of each post, the next row is marked as `Pending`, allowing fully automated posting, so you can prepare months of content in advance.

✅ Requirements

📱 Instagram Business Account Required to publish content via the Meta Graph API. Make sure your IG account is connected to a Facebook Page.
🔐 Facebook Developers Token Required to use the Graph API and publish on Instagram. 👉 It's highly recommended to create a System User so your token never expires.
☁️ Cloudinary Upload Preset Used to upload generated images and retrieve public URLs. 👉 Use an unsigned upload preset (no API key required).
🧠 OpenAI API Key Used for:
- Generating a caption from the post description.
- Creating image prompts.
- Generating images using gpt-image-1. ⚠️ You might need to verify your business with OpenAI to access this model.
📊 Google Sheets App with OAuth credentials To fetch your content and instructions from the spreadsheet.

💬 Notes and Customization

✏️ You can customize the prompt to change the visual style of the images. Examples:
- Gumball style
- Comic-style illustration
- Digital painting
🔄 You can replace Google Sheets with tools like:
- Airtable
- Notion
- Your own database
🔐 If Facebook requires a Privacy Policy, you can quickly create one here: 👉 https://www.privacypolicygenerator.info

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 - Basic LLM Chain

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

Block 2 - Item List Output Parser

Type / Role: @n8n/n8n-nodes-langchain.outputParserItemList - outputParserItemList
Config choices: Version 1

Block 3 - OpenAI Chat Model

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

Block 4 - Loop Over Items

Type / Role: n8n-nodes-base.splitInBatches - splitInBatches
Config choices: Version 3

Block 5 - OpenAI - Generate Image

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.2

Block 6 - Separate Image Outputs

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

Block 7 - Convert to File

Type / Role: n8n-nodes-base.convertToFile - convertToFile
Config choices: Version 1.1

Block 8 - Wait

Type / Role: n8n-nodes-base.wait - wait
Config choices: Version 1.1

Block 9 - Cloudinary

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.2

Block 10 - URL

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

Block 11 - If

Type / Role: n8n-nodes-base.if - if
Config choices: Version 2.2

Block 12 - Schedule Trigger

Type / Role: n8n-nodes-base.scheduleTrigger - scheduleTrigger
Config choices: Version 1.2

Block 13 - Completed

Type / Role: n8n-nodes-base.googleSheets - googleSheets
Config choices: Version 4.6

Block 14 - Next Pending

Type / Role: n8n-nodes-base.googleSheets - googleSheets
Config choices: Version 4.6

Block 15 - Get Pending

Type / Role: n8n-nodes-base.googleSheets - googleSheets
Config choices: Version 4.6

Block 16 - IG images ID

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.2

Block 17 - IG Media Carousel

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.2

Block 18 - IG post Media

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.2

Block 19 - Images ID Array

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Block 20 - ig-user-id

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.2

Block 21 - IG User ID

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

Block 22 - Facebook Pages

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.2

Block 23 - Setup Instructions

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

Block 24 - Setup Instructions1

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

Showing the first 24 of 32 workflow blocks. Download the JSON for the full node graph.

3. Summary Table

Workflow	Auto-generate Instagram carousels with GPT-Image-1 & AI captions from Google Sheets
Complexity	advanced
Nodes	32
Categories	Multimodal AI
Author	Jorge Martínez
Published	22 Aug 2025

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/7750/7750.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 Multimodal AI workflows

Frequently asked questions

What does Auto-generate Instagram carousels with GPT-Image-1 & AI captions from Google Sheets do?

Instagram Carousel Scheduler A tool to automatically publish Instagram carousels using a , , and the number of images you want to post — all directly from a Google Sheet. At the end of each post...

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 Multimodal AI use case.

Jorge Martínez

5 workflows

Nodes

@n8n/n8n-nodes-langchain.chainllm @n8n/n8n-nodes-langchain.outputparseritemlist @n8n/n8n-nodes-langchain.lmchatopenai n8n-nodes-base.splitinbatches n8n-nodes-base.httprequest n8n-nodes-base.splitout n8n-nodes-base.converttofile n8n-nodes-base.wait

Complexity

advanced

Published 22 Aug 2025

Likes 0

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Install path: /data/workflows/7750/7750.json

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Auto-generate Instagram carousels with GPT-Image-1 & AI captions from Google Sheets

Workflow preview

Important notice

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

🧰 Instagram Carousel Scheduler

✅ Requirements

💬 Notes and Customization

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - Basic LLM Chain

Block 2 - Item List Output Parser

Block 3 - OpenAI Chat Model

Block 4 - Loop Over Items

Block 5 - OpenAI - Generate Image

Block 6 - Separate Image Outputs

Block 7 - Convert to File

Block 8 - Wait

Block 9 - Cloudinary

Block 10 - URL

Block 11 - If

Block 12 - Schedule Trigger

Block 13 - Completed

Block 14 - Next Pending

Block 15 - Get Pending

Block 16 - IG images ID

Block 17 - IG Media Carousel

Block 18 - IG post Media

Block 19 - Images ID Array

Block 20 - ig-user-id

Block 21 - IG User ID

Block 22 - Facebook Pages

Block 23 - Setup Instructions

Block 24 - Setup Instructions1

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