Marcus Vance
Marcus writes the guides, comparisons, and reference pages published on PrintDPI.
Marcus's beat is the point where a digital image stops being just pixels and starts being a physical print: what DPI actually controls, why a phone photo that looks sharp on a screen can turn soft on paper, and where the 300 DPI convention came from in the first place. He came to the subject through the practical side, sizing images for print jobs and running into the same pixel-shortfall problem often enough to want a faster way to check it.
Every figure he publishes is checked against the site's own calculators using the same inputs a reader would type, and against the print and photo-finishing conventions those calculators are built on. He does not hold a professional certification in printing, color science, or photography, and nothing on this site is offered as a substitute for advice from an actual print lab about a specific job.
Recent guides: what DPI actually measures, DPI versus PPI, sizing images for large prints.
Chris Terry
Chris owns PrintDPI and reviews what runs on it before publication.
Chris maintains the site and the three calculators it is built around, and reviews Marcus's guides for accuracy before they go live. He does not write or byline articles on this site; his role is ownership and editorial review, covered in more detail on the editorial standards page.