Auto-create Instagram carousel posts from Canva with OpenAI and Blotato

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1. Workflow Overview

Auto Create Instagram Carousel Posts from Canva (Webhook → AI Caption → Instagram) Automatically turn Canva carousel exports into a fully published Instagram post with AI generated captions. This w...

Best for

Social Media automation workflows
Multimodal AI automation workflows
advanced n8n builders looking for reusable templates

Tools used

n8n-nodes-base.webhook, n8n-nodes-base.splitout, @blotato/n8n-nodes-blotato.blotato, n8n-nodes-base.aggregate, n8n-nodes-base.telegram, n8n-nodes-base.if, n8n-nodes-base.noop, @n8n/n8n-nodes-langchain.openai

Source and attribution

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

Original n8n.io source

1.1 Workflow description

Title: Auto-create Instagram carousel posts from Canva with OpenAI and Blotato
Workflow name: Auto-create Instagram carousel posts from Canva with OpenAI and Blotato

Auto-Create Instagram Carousel Posts from Canva (Webhook → AI Caption → Instagram)

Automatically turn Canva carousel exports into a fully published Instagram post with AI-generated captions. This workflow receives a webhook payload containing PNG slides (for example from Claude Cowork or a Canva automation), uploads the images, generates an optimized Instagram caption using AI, and publishes the carousel post via Blotato. It removes the manual work of downloading slides, writing captions, and posting to Instagram.

What this template does

When triggered by a webhook, this workflow: Receives a payload containing carousel slide images Splits the slides into individual items Uploads each image to a media host Aggregates all images into a carousel Uses AI to generate an Instagram caption with hashtags Publishes the post to Instagram via Blotato This allows you to go from Canva design → Instagram post automatically.

Example use cases

This workflow is useful for: Social media managers automating Instagram posting Content creators producing carousel posts at scale Agencies generating client posts automatically AI-assisted content pipelines Marketing automation systems Example automation pipeline: Claude → Canva → n8n → Instagram

Workflow overview Webhook → Split Slides → Upload Media → Aggregate Images → Generate Caption → Publish Instagram Post Node breakdown Webhook Receives a POST request containing the carousel slide data. The payload includes slide metadata and PNG URLs generated by Canva. Split Out Slides - Splits the slides array so each slide is processed individually. This allows each PNG image to be uploaded and processed as its own item. Upload Media (Blotato) - Uploads each slide image to the media host used by the social publishing platform. Aggregate collects all uploaded image URLs into a single list. Message a Model (AI Caption Generator) Telegram Node for Approval Create Post (Blotato) - Creates and publishes the Instagram carousel post

Requirements

Before using this template you must configure the following: OpenAI API credential Blotato API credential Instagram account connected to Blotato A system that sends the webhook (Claude, Canva, or another automation)

Setup instructions

Import the workflow into n8n Configure credentials: OpenAI Blotato Copy the webhook URL from the Webhook node Configure your upstream tool (Claude / Canva / automation) to send slide data to this webhook Test the workflow by sending a sample payload Activate the workflow Once active, new carousel payloads will automatically be turned into Instagram posts

Customization ideas

You can easily extend this workflow by: Adding Telegram approval before posting Posting to TikTok, LinkedIn, or Facebook Storing posts in Google Sheets or Notion Generating captions in different tones or languages Adding AI analysis of the slides to generate smarter captions

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 - Webhook

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

Block 2 - Split Out Slides

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

Block 3 - Upload media

Type / Role: @blotato/n8n-nodes-blotato.blotato - blotato
Config choices: Version 2

Block 4 - Create post

Type / Role: @blotato/n8n-nodes-blotato.blotato - blotato
Config choices: Version 2

Block 5 - Aggregate

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

Block 6 - Send message and wait for response

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

Block 7 - If

Type / Role: n8n-nodes-base.if - if
Config choices: Version 2.3

Block 8 - Send a text message

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

Block 9 - No Operation, do nothing

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

Block 10 - Caption Generator

Type / Role: @n8n/n8n-nodes-langchain.openAi - openAi
Config choices: Version 2.1

Block 11 - Sticky Note

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

Block 12 - Sticky Note1

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

Block 13 - Sticky Note2

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

Block 14 - Sticky Note3

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

Block 15 - Sticky Note4

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

3. Summary Table

Workflow	Auto-create Instagram carousel posts from Canva with OpenAI and Blotato
Complexity	advanced
Nodes	15
Categories	Social Media, Multimodal AI
Author	Automate With Marc
Published	06 Mar 2026

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/13904/13904.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 Social Media workflows Multimodal AI workflows

Frequently asked questions

What does Auto-create Instagram carousel posts from Canva with OpenAI and Blotato 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 Social Media, Multimodal AI use case.

Automate With Marc

50 workflows

Nodes

n8n-nodes-base.webhook n8n-nodes-base.splitout @blotato/n8n-nodes-blotato.blotato n8n-nodes-base.aggregate n8n-nodes-base.telegram n8n-nodes-base.if n8n-nodes-base.noop @n8n/n8n-nodes-langchain.openai

Complexity

advanced

Published 06 Mar 2026

Likes 0

View on n8n.io Download Workflow

Install path: /data/workflows/13904/13904.json

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Auto-create Instagram carousel posts from Canva with OpenAI and Blotato

Workflow preview

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

Auto-Create Instagram Carousel Posts from Canva (Webhook → AI Caption → Instagram)

What this template does

Example use cases

Requirements

Setup instructions

Customization ideas

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - Webhook

Block 2 - Split Out Slides

Block 3 - Upload media

Block 4 - Create post

Block 5 - Aggregate

Block 6 - Send message and wait for response

Block 7 - If

Block 8 - Send a text message

Block 9 - No Operation, do nothing

Block 10 - Caption Generator

Block 11 - Sticky Note

Block 12 - Sticky Note1

Block 13 - Sticky Note2

Block 14 - Sticky Note3

Block 15 - Sticky Note4

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