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Done! Now you’re the proud owner of a Telegram channel. The next step is to set up and customize your 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. How to Create a Private or Public Channel on Telegram? A new window will come up. Enter your channel name and bio. (See the character limits above.) Click “Create.” 5Telegram Channel avatar size/dimensions
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