Select: Settings β Manage Channel β Administrators β Add administrator. From your list of subscribers, select the correct user. A new window will appear on the screen. Check the rights youβre willing to give to your administrator. The Standard Channel The optimal dimension of the avatar on Telegram is 512px by 512px, and itβs recommended to use PNG format to deliver an unpixelated avatar. Public channels are public to the internet, regardless of whether or not they are subscribed. A public channel is displayed in search results and has a short address (link). 5Telegram Channel avatar size/dimensions
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