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. Add the logo from your device. Adjust the visible area of your image. Congratulations! Now your Telegram channel has a face Click “Save”.! Channel login must contain 5-32 characters Telegram users themselves will be able to flag and report potentially false content. How to Create a Private or Public Channel on Telegram?
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