Telegram users themselves will be able to flag and report potentially false content. A Hong Kong protester with a petrol bomb. File photo: Dylan Hollingsworth/HKFP. 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. “Hey degen, are you stressed? Just let it all out,” he wrote, along with a link to join the group. Done! Now you’re the proud owner of a Telegram channel. The next step is to set up and customize your channel.
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