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To upload a logo, click the Menu icon and select “Manage Channel.” In a new window, hit the Camera icon. Image: Telegram. 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. How to create a business channel on Telegram? (Tutorial) To edit your name or bio, click the Menu icon and select “Manage Channel.”
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