Telegram to Facebook Multi-Photo Posts (OpenRouter AI) - n8n

Turn Telegram photo albums into engaging Facebook multi-photo posts—automatically

This n8n workflow watches for new Telegram messages with photos, buffers album images, uses OpenRouter AI to rewrite the caption, uploads multi-photo attachments to Facebook, publishes the post, and sends your chat a clickable link to the live Facebook URL.

What this workflow does

• Triggers on Telegram photo messages and extracts the best-resolution photo plus any caption text.
• Uses a media-group key to group images from the same Telegram album and stores each photo entry in an n8n Data Table (buffering columns like media_group_id, file_id, caption, and date).
• Waits briefly so all album images arrive, then retrieves all stored records for that album.
• Collects the first non-empty caption and builds a photo list for publishing.
• Calls OpenRouter to rewrite the caption into an engaging Facebook post with a hook, CTA, and hashtags.
• Downloads each Telegram photo and uploads it to the Facebook Graph API as unpublished media to obtain media IDs.
• Publishes a Facebook Page feed post with the AI-generated message and aggregated attached_media, then sends a Telegram notification containing the Facebook post URL.

Use cases

• Social teams that collect event and product photos in Telegram and want Facebook carousel-style (multi-photo) posts without manual editing.
• Operators running an n8n-based media pipeline across Telegram → OpenRouter → Facebook with consistent caption formatting.
• Community managers who want instant publishing plus a link back to the original chat for visibility and approvals.

Technical details

• Telegram integration: new photo messages, album (media group) buffering.
• n8n Data Table: stores album items (media_group_id, file_id, caption, date).
• AI captioning: OpenRouter AI for Facebook caption rewriting.
• Facebook publishing: Facebook Graph API uploads (unpublished media) + feed post with attached_media.
• Core nodes mentioned: set, code, wait, merge, telegram, aggregate.