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. Select “New Channel” But a Telegram statement also said: "Any requests related to political censorship or limiting human rights such as the rights to free speech or assembly are not and will not be considered." Private channels are only accessible to subscribers and don’t appear in public searches. To join a private channel, you need to receive a link from the owner (administrator). A private channel is an excellent solution for companies and teams. You can also use this type of channel to write down personal notes, reflections, etc. By the way, you can make your private channel public at any moment. To upload a logo, click the Menu icon and select “Manage Channel.” In a new window, hit the Camera icon.
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