2How to set up a Telegram channel? (A step-by-step tutorial) Users are more open to new information on workdays rather than weekends. 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 visual aspect of channels is very critical. In fact, design is the first thing that a potential subscriber pays attention to, even though unconsciously.
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