Telegram Channels requirements & features The optimal dimension of the avatar on Telegram is 512px by 512px, and itβs recommended to use PNG format to deliver an unpixelated avatar. Add the logo from your device. Adjust the visible area of your image. Congratulations! Now your Telegram channel has a face Click βSaveβ.! 4How to customize a Telegram channel? Telegram iOS app: In the βChatsβ tab, click the new message icon in the right upper corner. Select βNew Channel.β
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