Add up to 50 administrators 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. In 2018, Telegram’s audience reached 200 million people, with 500,000 new users joining the messenger every day. It was launched for iOS on 14 August 2013 and Android on 20 October 2013. 5Telegram Channel avatar size/dimensions Telegram Android app: Open the chats list, click the menu icon and select “New Channel.”
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