5Telegram Channel avatar size/dimensions Hashtags Telegram users themselves will be able to flag and report potentially false content. 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. "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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