5Telegram Channel avatar size/dimensions To upload a logo, click the Menu icon and select โManage Channel.โ In a new window, hit the Camera icon. In the next window, choose the type of your channel. If you want your channel to be public, you need to develop a link for it. In the screenshot below, itโs โ/catmarketing.โ If your selected link is unavailable, youโll need to suggest another option. Image: Telegram. Administrators
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