I am trying to send PDFs via Telegram node. The PDF thumbnail generation is only supported on macOS / ios so I was thinking to use thumbnail function in the Telegram to embed the thumbnail I downloaded from Google drive to the file. The thumbnails are totally compliant with Telegram thumbnail guideline (< 200 x 200, jpeg). I had the thumbnail as binary file and called it at thumbnail function like below setup. But the file does not have a thumbnail preview.
Anyone know why the thumbnails are not seen at the sent messages? Much appreciated!!
I want to have results like this:
Information on your n8n setup
- n8n version: 1.94.1
- Database: SQLite
- n8n EXECUTIONS_PROCESS setting: Default
- Running n8n via n8n cloud
- Operating system: Win11