A new window will come up. Enter your channel name and bio. (See the character limits above.) Click โCreate.โ Step-by-step tutorial on desktop: Select: Settings โ Manage Channel โ Administrators โ Add administrator. From your list of subscribers, select the correct user. A new window will appear on the screen. Check the rights youโre willing to give to your administrator. 5Telegram Channel avatar size/dimensions The optimal dimension of the avatar on Telegram is 512px by 512px, and itโs recommended to use PNG format to deliver an unpixelated avatar.
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