A vandalised bank during the 2019 protest. File photo: May James/HKFP. 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. It’s easy to create a Telegram channel via desktop app or mobile app (for Android and iOS): To upload a logo, click the Menu icon and select “Manage Channel.” In a new window, hit the Camera icon. Step-by-step tutorial on desktop:
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