Which statement describes the difference between DPI and PPI?

Which statement describes the difference between DPI and PPI?

• A. DPI refers to printer resolution; PPI refers to image resolution.
• B. DPI refers to image resolution; PPI to printer resolution.
• C. DPI and PPI are identical.
• D. DPI is only for color depth.

Answer: (A)

DPI vs PPI describe density in different contexts. PPI, pixels per inch, refers to the digital image’s resolution — how many pixels make up each inch of the image. DPI, dots per inch, refers to printer resolution — how many ink dots the printer can place in each inch of the final print. They are related but not the same, because a printer converts the image’s pixels into ink dots, and may render each pixel with multiple dots or apply dithering to reproduce color and detail. That’s why the statement that DPI refers to printer resolution and PPI to image resolution is the best description. The other ideas mix up the roles, claim they’re identical, or misattribute DPI to color depth.

DPI vs PPI describe density in different contexts. PPI, pixels per inch, refers to the digital image’s resolution — how many pixels make up each inch of the image. DPI, dots per inch, refers to printer resolution — how many ink dots the printer can place in each inch of the final print. They are related but not the same, because a printer converts the image’s pixels into ink dots, and may render each pixel with multiple dots or apply dithering to reproduce color and detail. That’s why the statement that DPI refers to printer resolution and PPI to image resolution is the best description. The other ideas mix up the roles, claim they’re identical, or misattribute DPI to color depth.