Twitch has specific image requirements for different channel elements. Panel images should be 320 pixels wide (height flexible, max 600px). Profile banners should be 1200x480 pixels. Offline banners should be 1920x1080. Emotes require three sizes: 28x28, 56x56, and 112x112.
For the best emote quality, design at 112x112 and resize down. Emotes must work at all three sizes, so use simple, high-contrast designs that remain recognizable at 28x28.
With ImgTools, upload your images and resize to each required Twitch dimension. For emotes, start with the 112x112 version and create the smaller variants.
Save as PNG for emotes (transparency supported) and JPEG or PNG for panels and banners. Twitch accepts files up to 10MB.
All processing happens locally in your browser.