The optimal dimension of the avatar on Telegram is 512px by 512px, and itβs recommended to use PNG format to deliver an unpixelated avatar. A Hong Kong protester with a petrol bomb. File photo: Dylan Hollingsworth/HKFP. best-secure-messaging-apps-shutterstock-1892950018.jpg 4How to customize a Telegram channel? But a Telegram statement also said: "Any requests related to political censorship or limiting human rights such as the rights to free speech or assembly are not and will not be considered."
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