SUCK Channel 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. To upload a logo, click the Menu icon and select “Manage Channel.” In a new window, hit the Camera icon. Telegram iOS app: In the “Chats” tab, click the new message icon in the right upper corner. Select “New Channel.” Step-by-step tutorial on desktop:
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