YouTube to Facebook & Instagram Auto-Publish n8n Workflow

Turn every new YouTube upload into Facebook + Instagram posts automatically—using AI captions.

This YouTube to Facebook & Instagram Auto-Publish n8n Workflow watches your YouTube channel for new videos, generates engaging, platform-ready captions with AI, and publishes to Facebook pages and Instagram business accounts so you can maximize reach with less manual work.

What this workflow does

• YouTube Channel Monitoring: Reads your YouTube RSS feed hourly and triggers when a new upload is detected.
• AI Caption Generation: Uses GPT-4 to produce social media captions with emojis and clear calls-to-action, tailored for posting on Facebook and Instagram.
• Facebook Auto-Publishing: Automatically posts to your Facebook page, including the AI-generated caption and a video link.
• Instagram Business Posting: Publishes to your Instagram business account using the YouTube thumbnail as the post image and applying a customized caption.
• Smart Error Handling: If one platform fails, the workflow continues so you still get maximum distribution across both channels.

Use cases

• For YouTube creators who want consistent cross-posting without spending time rewriting captions for each platform.
• For SaaS operators running content marketing who want faster publishing and broader distribution (new posts typically appear within about 1 hour after upload).
• For automation engineers building reliable n8n systems that gracefully handle partial failures.

Technical details (n8n)

• RSS Feed Read Trigger: Watches your YouTube RSS feed hourly.
• http request: Supports publishing/linking actions used by the workflow.
• n8nn8n-nodes-langchainagent and n8nn8n-nodes-langchainlm with OpenAI (GPT-4) for AI caption creation.
• Included workflow organization: Uses a sticky note for clarity during setup.

Set & forget: Once configured, this n8n automation reduces manual cross-posting and caption writing—helping you save 5+ hours weekly while delivering AI-optimized posts across major social platforms.