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. 5Telegram Channel avatar size/dimensions A Hong Kong protester with a petrol bomb. File photo: Dylan Hollingsworth/HKFP. The SUCK Channel on Telegram, with a message saying some content has been removed by the police. Photo: Telegram screenshot. Your posting frequency depends on the topic of your channel. If you have a news channel, it’s OK to publish new content every day (or even every hour). For other industries, stick with 2-3 large posts a week.
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