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. Activate up to 20 bots To upload a logo, click the Menu icon and select “Manage Channel.” In a new window, hit the Camera icon. It’s easy to create a Telegram channel via desktop app or mobile app (for Android and iOS):
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