YouTube Channel Art Specifications
Here are youtube’s rules on the size and dimensions of your channel art and your profile picture.
Recommended Size: 1 Sub
- Dimensions: 2560 x 1440 pixels
- File size: Less than 4MB
- Dimensions: Youtube recommends 800 x 800 pixels
Note: Any details about your channel should not be included in your channel icon because it is usually presented as a small image.