In the next window, choose the type of your channel. If you want your channel to be public, you need to develop a link for it. In the screenshot below, itβs β/catmarketing.β If your selected link is unavailable, youβll need to suggest another option. The optimal dimension of the avatar on Telegram is 512px by 512px, and itβs recommended to use PNG format to deliver an unpixelated avatar. More>> How to build a private or public channel on Telegram?
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