The optimal dimension of the avatar on Telegram is 512px by 512px, and itβs recommended to use PNG format to deliver an unpixelated avatar. For crypto enthusiasts, there was the βgmβ app, a self-described βmeme appβ which only allowed users to greet each other with βgm,β or βgood morning,β a common acronym thrown around on Crypto Twitter and Discord. But the gm app was shut down back in September after a hacker reportedly gained access to user data. 1What is Telegram Channels? Step-by-step tutorial on desktop: How to Create a Private or Public Channel on Telegram?
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