When you're serious about your Youtube channel, there are a few things that you can do to brand yourself. One of the easiest ways to customize the experience for viewers is to create banner art for your homepage. I've seen people create all kinds of banners--some include their social media handles, their upload schedules, a call to action, or a collage of pictures.
While the banner seems simple, it gets a little tricky due to the size dimensions for TV, mobile and desktop viewers. Here's how Youtube breaks it down:
Channel art may look different on desktop, mobile, and TV displays. For the best results on all devices, we recommend uploading a single 2560 x 1440 px image.
Minimum width: 2048 X 1152 px. This is the "safe area," where text and logos are guaranteed not to be cut off when displayed on different devices.
Maximum width: 2560 X 423 px. This means that the "safe area" is always visible; the areas to each side of the channel art are visible depending on the viewer’s browser size.
If you're not sure about the width and height of an image, download our Channel Art Templates to see how images show on different devices. You can use your computer's image editor or find one online to resize the images.
I hope this tutorial is helpful!