How to build a private or public channel on Telegram? Add the logo from your device. Adjust the visible area of your image. Congratulations! Now your Telegram channel has a face Click “Save”.! Done! Now you’re the proud owner of a Telegram channel. The next step is to set up and customize your channel. Write your hashtags in the language of your target audience. 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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