Auto-generate social media posts from URLs with AI, Telegram & multi-platform posting

How it works

This workflow turns any URL sent to a Telegram bot into ready-to-publish social posts: 1. Trigger: Telegram message (checks if it contains a URL). 2. Fetch & parse: Downloads the page and extracts readable text + title. 3. AI writing: Generates platform-specific copy (Facebook, Instagram, LinkedIn). 4. Image: Creates an AI image and stores it in Supabase Storage. 5. Publish: Posts to Facebook Pages, Instagram Business, LinkedIn. 6. Logging: Updates Google Sheets with post URLs and sends a Telegram confirmation (image + links).

Setup

1.	Telegram – create a bot, connect via n8n Telegram credentials.
2.	OpenAI / Gemini – add API key in n8n Credentials and select it in the AI nodes.
3.	Facebook/Instagram (Graph API) – create a credential called facebookGraph with:
•	accessToken (page-scoped or system user)
•	pageId (for Facebook Page photos)
•	igUserId (Instagram Business account ID)
•	optional fbApiVersion (default v19.0)
4.	LinkedIn – connect with OAuth2 in the LinkedIn node (leave as credential).
5.	Supabase – credential supabase with url and apiKey. Ensure a bucket exists (default used in the Set node is social-media).
6.	Google Sheets – replace YOUR_GOOGLE_SHEET_ID and Sheet1. Grant your n8n Google OAuth2 access.

Notes

•	No API keys are stored in the template. Everything runs via n8n Credentials.
•	You can change bucket name, image size/quality, and AI prompts in the respective nodes.
•	The confirmation message on Telegram includes direct permalinks to the published posts.

Required credentials

•	Telegram Bot
•	OpenAI (or Gemini)
•	Facebook/Instagram Graph
•	LinkedIn OAuth2
•	Supabase (url + apiKey)
•	Google Sheets OAuth2

Inputs

•	A Telegram message that contains a URL.

Outputs

•	Social posts published on Facebook, Instagram, LinkedIn.
•	Row appended/updated in Google Sheets with post URLs and image link.
•	Telegram confirmation with the generated image + post links.