Done! Now you’re the proud owner of a Telegram channel. The next step is to set up and customize your channel. Channel login must contain 5-32 characters Step-by-step tutorial on desktop: Select: Settings – Manage Channel – Administrators – Add administrator. From your list of subscribers, select the correct user. A new window will appear on the screen. Check the rights you’re willing to give to your administrator. 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.
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