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. The visual aspect of channels is very critical. In fact, design is the first thing that a potential subscriber pays attention to, even though unconsciously. Telegram users themselves will be able to flag and report potentially false content. Content is editable within two days of publishing End-to-end encryption is an important feature in messaging, as it's the first step in protecting users from surveillance.
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