2How to set up a Telegram channel? (A step-by-step tutorial) To upload a logo, click the Menu icon and select “Manage Channel.” In a new window, hit the Camera icon. A new window will come up. Enter your channel name and bio. (See the character limits above.) Click “Create.” 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. According to media reports, the privacy watchdog was considering “blacklisting” some online platforms that have repeatedly posted doxxing information, with sources saying most messages were shared on Telegram.
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