‘Ban’ on Telegram Telegram channels fall into two types: 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. The Channel name and bio must be no more than 255 characters long "Doxxing content is forbidden on Telegram and our moderators routinely remove such content from around the world," said a spokesman for the messaging app, Remi Vaughn.
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