Print Size Photo Editor

Every print size has specific pixel dimensions. A 10x15 cm print at 300 DPI needs 1181 x 1772 pixels. A 20x30 cm print needs 2362 x 3543 pixels. If your photo does not meet these dimensions, the print lab either crops it or stretches it, both producing poor results.

This print size editor shows you the exact pixel dimensions for each print format and checks whether your photo has enough resolution. You see the output dimensions before exporting, so there are no surprises when the prints arrive from the lab.

The editor gives you full control over positioning and zoom. Drag the photo to choose exactly which part appears in the print frame. Use the zoom slider to crop tighter or show more of the scene. The straighten slider lets you fix crooked horizons before the final export.

DPI (dots per inch) determines how sharp your prints look. At 300 DPI, the human eye cannot distinguish individual pixels at normal viewing distance. This is the gold standard for professional photo printing.

A 12-megapixel camera produces photos of roughly 4000 x 3000 pixels. At 300 DPI, this is enough for a sharp 20x30 cm print. But if you crop heavily or zoom in, the effective resolution drops. A tightly cropped photo may only have enough pixels for a 10x15 cm print.

Large format prints like A3 need more pixels. A sharp A3 print at 300 DPI requires about 3508 x 4960 pixels, which is roughly 17 megapixels. Most modern cameras exceed this, but older cameras or heavily cropped photos may fall short.