Youtube Image Size Thumbnail. The thumbnail dimensions should follow an aspect ratio of 16 9. 2560 x 1440 pixels channel icon.
1280 pixels wide by 720 pixels tall with a minimum width of 640 pixels. The minimum size is 640 pixels wide. Following are the image sizes for youtube.
800 x 800 pixels video thumbnail.
These youtube thumbnail dimensions use an aspect ratio of 16 9. The perfect youtube thumbnail size is 1280 pixels by 720 pixels. Ideally you want to choose a thumbnail with a 16 9 aspect ratio. Resize image for youtube thumbnail banner and channel art photo size online.