Auto-Generate & Post AI Images to Facebook using Gemini & Pollinations AI

This workflow is designed for content creators or AI artists who want to automate posting unique AI-generated images to their Facebook Page multiple times a day. It uses Google Gemini via LangChain to generate imaginative image prompts, and Pollinations AI to generate the images. Posts are published with hashtags and a clean caption.

Who Is It For

• AI artists
• Facebook page managers
• Digital marketers looking for automated creative content

What It Does

• Triggers 3x daily at 7:00, 11:00, and 17:00 (local time)
• Generates random AI image prompts in a retro-futuristic, cinematic, or surreal style using Google Gemini
• Fetches images from Pollinations AI using custom prompts
• Posts images automatically to your Facebook Page with hashtags

Requirements

• n8n self-hosted or desktop (workflow uses schedule trigger)
• Pollinations API (no auth needed)
• Facebook Page with Facebook Graph API token:
• Required scopes: pages_manage_posts, pages_read_engagement, pages_show_list
• Google Gemini API Key (used via LangChain node)

How to Customize

• Change the prompt style in the Basic LLM Chain node (promptType: define) to suit your theme.
• Adjust Set The Generator Image node if you want:
• Different image sizes (width / height)
• Different seed randomness
• Other Pollinations models (&model=kontext)
• Add Telegram/Twitter nodes if you want cross-posting
• Use Set node to allow easy user-level configuration of models, hashtags, times, etc.