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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. Don’t publish new content at nighttime. Since not all users disable notifications for the night, you risk inadvertently disturbing them. Read now To upload a logo, click the Menu icon and select “Manage Channel.” In a new window, hit the Camera icon. A new window will come up. Enter your channel name and bio. (See the character limits above.) Click “Create.”
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