2How to set up a Telegram channel? (A step-by-step tutorial) To upload a logo, click the Menu icon and select โManage Channel.โ In a new window, hit the Camera icon. The optimal dimension of the avatar on Telegram is 512px by 512px, and itโs recommended to use PNG format to deliver an unpixelated avatar. Activate up to 20 bots Done! Now youโre the proud owner of a Telegram channel. The next step is to set up and customize your channel.
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