What to check first
Start with pixel width, pixel height, target print width, and target print height. These four numbers tell you the effective PPI that the printer will actually have to work with.
Prepress basics
Image resolution for printing should be judged against the finished product size and viewing distance. Pixel count matters more than the DPI number stored in file metadata.
Use the resolution checkerStart with pixel width, pixel height, target print width, and target print height. These four numbers tell you the effective PPI that the printer will actually have to work with.
Files from screenshots, social media downloads, AI image tools, and design templates can look large while still being too soft for production.
Use a repeatable file check before quoting, proofing, or production so staff can give the customer the same answer each time.