If you want to create a YouTube channel art you need a cover image of 2560x1440 pixels in size.
You can start from some cool templates we offer or design it from scratch by adding your own content.
Depending on the device from which your YouTube channel is viewed you will see the full size or a cropped view of your image. You can adjust your banner so the important elements fit in a 1546x423 rectangle in the middle, this way it will look good even on desktop or mobile devices.
Then all you have to do is Save the banner, download it on your computer and upload it as your YouTube channel art.
*You can download YouTube size stencil from below.