What matters
Twitch Offline Banner dimensions at a glance
The offline banner fills the video player area when a channel isn't live. At 1920×1080, it's your channel's most prominent static image and the first thing visitors see when you're not streaming.
Most channel visits happen when you're offline. A professional offline banner with schedule info and social links converts casual visitors into followers.
Wrong-ratio banners get letterboxed or cropped in the player area. Missing offline banners show a generic Twitch placeholder that looks abandoned.