Dots per inch, or DPI, is a measurement used to indicate the resolution of printed images or digital displays. It refers to the number of individual dots that can be placed in a line within the span of one inch. Higher DPI values generally mean better image quality, as more dots create finer detail and smoother gradients. In printing, a DPI of 300 is often considered standard for high-quality images, while 72 DPI is common for images displayed on screens. Understanding DPI helps in choosing the right settings for printing or digital design, ensuring that images appear sharp and clear.