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. How to Create a Private or Public Channel on Telegram? The main design elements of your Telegram channel include a name, bio (brief description), and avatar. Your bio should be: Telegram desktop app: In the upper left corner, click the Menu icon (the one with three lines). Select “New Channel” from the drop-down menu. How to create a business channel on Telegram? (Tutorial)
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