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: Done! Now you’re the proud owner of a Telegram channel. The next step is to set up and customize your channel. 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. It’s easy to create a Telegram channel via desktop app or mobile app (for Android and iOS):
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