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. ZDNET RECOMMENDS Today, we will address Telegram channels and how to use them for maximum benefit. Choose quality over quantity. Remember that one high-quality post is better than five short publications of questionable value. Telegram Android app: Open the chats list, click the menu icon and select “New Channel.”
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