Each account can create up to 10 public channels To edit your name or bio, click the Menu icon and select “Manage Channel.” A new window will come up. Enter your channel name and bio. (See the character limits above.) Click “Create.” 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. 4How to customize a Telegram channel?
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