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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 Private or Public Channel on Telegram? 5Telegram Channel avatar size/dimensions Don’t publish new content at nighttime. Since not all users disable notifications for the night, you risk inadvertently disturbing them. How to Create a Private or Public Channel on Telegram?
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