Some Telegram Channels content management tips Telegram desktop app: In the upper left corner, click the Menu icon (the one with three lines). Select βNew Channelβ from the drop-down menu. How to Create a Private or Public Channel on Telegram? The optimal dimension of the avatar on Telegram is 512px by 512px, and itβs recommended to use PNG format to deliver an unpixelated avatar. To view your bio, click the Menu icon and select βView channel info.β
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