What property in the Canvas Scaler component ensures UI elements remain the same size in pixels, regardless of screen size?

The property that ensures UI elements remain the same size in pixels regardless of screen size is the Constant Pixel Size. When this option is selected in the Canvas Scaler component, it allows the UI elements to maintain their pixel dimensions across different resolutions. This means that regardless of how large or small the screen is, the size of the UI elements—like buttons, text, and images—will always appear the same in terms of pixel dimensions.

Constant Pixel Size is particularly useful when you want a static UI layout that does not change in size when the game is displayed on devices with varying screen resolutions. This approach ensures a consistent user experience, especially for games or applications where precise visual elements are necessary.

In contrast, the other options relate more to scalability in response to different screen sizes and resolutions, which alters how UI elements are rendered. Scale with Screen Size adjusts elements proportionally based on the screen resolution, while Constant Physical Size focuses on maintaining physical sizes across devices with different pixel densities. Dynamic Pixel Size, while not a standard term for the Canvas Scaler component, implies a changing size that adapts to various conditions rather than a fixed pixel size.