4How to customize a Telegram channel? 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. Write your hashtags in the language of your target audience. The main design elements of your Telegram channel include a name, bio (brief description), and avatar. Your bio should be: To edit your name or bio, click the Menu icon and select “Manage Channel.”
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