A key requirement for ensuring optimal print quality is file resolution (measured in pixels). This information is outlined within the uploader:
"A high-resolution transparent .PNG at 150dpi. Minimum dimensions of at least 1500px by 1995px (not including outer transparent pixels).
To enable all products, your file must be at least 5000px by 5500px."
While the guidelines above will ensure that your design prints well across all products no matter the product, orientation, placement, or scaling, many designers still ask for specific print area dimensions for designing product-specific artwork. If you would like your designs to cover as much of the surface area on a given product, you can check out the Width x Height resolution thresholds for the following products below:
*The list of phone case dimensions is constantly growing. After all, just when you think you got the newest phone another comes out. These average sizes will print well on all phone cases, especially once the designs are scaled within the uploader.
There is no single standard for items such as stickers, magnets, wall art, totes, and apparel items due to a greater variety in sizing.