Definition
DPI
DPI describes print density metadata, while pixel dimensions describe the actual amount of image data.
Why DPI can be confusing
People often treat DPI as a quality score, but it is really a print-related setting. The actual size of an image in pixels still matters more for most digital use.
DPI metadata is useful for print, but it should be interpreted together with dimensions.
What DPI does not tell you
A high DPI value does not automatically mean the image has more detail. It only changes how software interprets the file for printing.
For screen use, web uploads, and most sharing tasks, pixel width and height are usually the more important numbers.
Related tools
More tools that cover similar file tasks.