I use my bot for Telegram chat group. But it doesn't send pdf files nor pictures to Telegram. Is it possible to make that work?
Responses in Bot Libre are HTML and can include <img> <video> and other tags. When Bot Libre sends a message to social media it translates the HTML it to whatever artifacts the social media platform supports.
For Telegram your bot can include an image in a response using the <img> tag. For the img src you can upload the image to Bot Libre from the response editor in the Training & Chat Logs page.
For including a file in a response, the best way is to link its URL. You can upload the file to Bot Libre from the response editor in the Training & Chat Logs page.