How to create a business channel on Telegram? (Tutorial) A new window will come up. Enter your channel name and bio. (See the character limits above.) Click “Create.” The Channel name and bio must be no more than 255 characters long 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. The main design elements of your Telegram channel include a name, bio (brief description), and avatar. Your bio should be:
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