Resolution
The number of pixels in an image, typically expressed as width × height (e.g., 3000×2000 pixels).
Resolution determines how much detail an image contains and how large it can be displayed or printed without quality loss. Higher resolution images contain more pixels and therefore more detail. For web use, 1920×1080 is common. For print, 300 DPI at the target size determines the needed pixel resolution. AI upscaling can increase resolution while adding meaningful detail.