1. Twitch Panel Size
Twitch panels are always 320 pixels long. The minimum and maximum height values are 75 and 600 pixels, respectively.
2. Twitch Profile Picture
The minimum and recommended dimensions on Twitch are 200 × 200 pixels and 256 x 256 pixels.
3. Twitch Profile Banner
Although 1200 x 480 pixels is the recommended size, keep in mind that the center is only viewable on mobile devices and hidden on desktops.
4. Twitch Offline Overlay
The offline screen fits nicely for Start-, End-, and BRB screens with a 16:9 ratio and a resolution of 1920 x 1080 pixels, and is surprisingly easy to use.
5. Twitch Thumbnail Size
Twitch thumbnails in PNG or JPEG format can have a maximum size of 1920 × 1080 pixels (16:9). However, 1280 x 720 pixels is the suggested resolution.
6. Twitch Overlay
Start-, End-, and BRB displays have a 16:9 aspect ratio and a 1920 x 1080 pixel resolution. Aspect ratios of 16:9 for larger webcams and 4:3 for smaller ones are also suggested.