Enter a finished trim size and bleed amount to get the document size to set up, its pixel dimensions at print resolution, and the safe area for important content.
Bleed is background artwork extended past the trim edge so that small cutting shifts never leave a white sliver. The document size is the finished size plus the bleed on both sides of each dimension. Pixel dimensions multiply the full document size in inches by the chosen DPI — 300 DPI is the standard for print. The safe area pulls the finished size in by a margin (0.125 in or 3 mm) on every side; text and logos kept inside it survive normal trim variation.
How much bleed is standard? 0.125 inches (an eighth of an inch, about 3 mm) on each edge is the standard bleed for most commercial print. Some printers ask for 5 mm, so the print specification always wins.
Why set the document size larger than the finished piece? The extra area is trimmed away after printing. Extending backgrounds into the bleed means the cut edge lands on printed colour even if the blade shifts slightly.
What belongs inside the safe area? Text, logos and anything that must not be clipped. Backgrounds and photos should run all the way out to the bleed edge instead.