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. 3How to create a Telegram channel? Add the logo from your device. Adjust the visible area of your image. Congratulations! Now your Telegram channel has a face Click “Save”.! To delete a channel with over 1,000 subscribers, you need to contact user support Content is editable within two days of publishing
from us