JPEG is generally preferred for photographs as it handles complex color values efficiently.

Buying a custom photo mug is a simple way to create a lasting keepsake, whether for yourself or as a gift. To ensure you get a high-quality result, focus on selecting the right mug type and using high-resolution images that won't appear pixelated when printed.

Most services offer online design tools where you can choose how your image is displayed:

These appear as plain black mugs until hot liquid is added, which slowly reveals the hidden photo from the bottom up.