Telegram Channels requirements & features How to Create a Private or Public Channel on Telegram? 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. A new window will come up. Enter your channel name and bio. (See the character limits above.) Click “Create.” Done! Now you’re the proud owner of a Telegram channel. The next step is to set up and customize your channel.
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