A 12-inch pizza oven is a compact, countertop appliance designed for baking pizzas up to 12 inches in diameter. It typically features adjustable temperature settings, a built-in heating element, and a quick preheat time, making it ideal for personal-sized pizzas and small batches. Its compact size makes it convenient for kitchens with limited space, offering a fast and efficient way to enjoy freshly baked pizza at home.