The optimal dimension of the avatar on Telegram is 512px by 512px, and it’s recommended to use PNG format to deliver an unpixelated avatar. Add the logo from your device. Adjust the visible area of your image. Congratulations! Now your Telegram channel has a face Click “Save”.! 4How to customize a Telegram channel? Users are more open to new information on workdays rather than weekends. Each account can create up to 10 public channels
from us