How to create a business channel on Telegram? (Tutorial) 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. A Hong Kong protester with a petrol bomb. File photo: Dylan Hollingsworth/HKFP. Hashtags are a fast way to find the correct information on social media. To put your content out there, be sure to add hashtags to each post. We have two intelligent tips to give you: To view your bio, click the Menu icon and select “View channel info.”
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