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Telegram News
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. Step-by-step tutorial on desktop: Telegram Channels requirements & features Telegram users themselves will be able to flag and report potentially false content.
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