Image: Telegram. Step-by-step tutorial on desktop: The optimal dimension of the avatar on Telegram is 512px by 512px, and itβs recommended to use PNG format to deliver an unpixelated avatar. The main design elements of your Telegram channel include a name, bio (brief description), and avatar. Your bio should be: The public channel had more than 109,000 subscribers, Judge Hui said. Ng had the power to remove or amend the messages in the channel, but he βallowed them to exist.β
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