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 business channel on Telegram? (Tutorial) Image: Telegram. 2How to set up a Telegram channel? (A step-by-step tutorial) Done! Now you’re the proud owner of a Telegram channel. The next step is to set up and customize your channel.
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