How to make sure your YouTube channel art looks great on all devices?

I’m designing a banner for my YouTube channel and want it to look clean on desktop, mobile, and TV. What’s the best size and layout to avoid parts of the image getting cut off?

When I first uploaded my channel art, parts of it were missing on mobile. Then I learned the ideal youtube banner size is 2560×1440 px, but what matters most is the “safe area” of 1546×423 px. That’s where your logo, text, or CTA should go—it’s the only part visible everywhere. Also, keep the file under 6MB and use JPG or PNG.