We're the Perfect Print team. One of the most common questions we get is some version of: I set the size, but the print came out too big (or too small) — why won't it print at actual size? It's frustrating, but the causes are few and fixable. This article walks through the usual reasons an image refuses to print at the right physical dimensions, and how to fix each one so the print measures exactly what you intended.
The four reasons prints come out the wrong size
The first and most common cause is the fit-to-page (or “scale to fit”) setting. Left on, it stretches or shrinks the image to fill the sheet, overriding whatever size you intended. The second is DPI confusion: people assume setting a resolution number locks the print size, but DPI only relates pixels to inches in theory — if the print path doesn't honor it and print at true scale, it has no effect on what lands on paper.
The third is cropping in a photo app, which changes pixels but not physical size — the shape looks right on screen yet has no fixed measurement. The fourth is the root of all of them: there was never an actual-size file to begin with. If the image doesn't carry a real, intended physical size that the printer respects, every step downstream is guessing.
How to fix it: print at 100%, from a true-size file
The direct fix is two-part. First, in the print dialog, turn off fit-to-page and set the scale to actual size (100%) — sometimes labeled “no scaling” or “custom scale: 100%.” That alone stops the auto-resize. Second, make sure the file you're printing actually represents the size you want, so that 100% means the right number of inches or centimeters rather than 100% of an undefined size.
That second part is exactly what Perfect Print handles. You pick a paper size, place the image at a real measurement in inches or centimeters, and save that as a true-size file. When you then print it at 100%, there's nothing left to drift: the data already says how big it is, and the printer just renders it.
A quick checklist before you reprint
Before sending another sheet through, confirm a few things. Is the print scale set to 100% and not fit-to-page? Are you printing the actual-size file you built, not the original crop? Is the paper size in the dialog the same one you laid the image out for? Mismatched paper sizes are a sneaky cause of unexpected scaling.
Once those line up, print one sheet and measure it with a ruler. If it matches the size you set, the path is correct and the rest of your copies will too. If it's still off, the scale setting is almost always the culprit — go back and force it to 100%.
Perfect Print
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Learn more about Perfect PrintFrequently asked questions
Why does my image print bigger than I set it?
Almost always the fit-to-page setting, which stretches the image to fill the sheet. Turn it off and set the scale to actual size (100%) so the image prints at its real dimensions.
Doesn't setting a high DPI fix the size?
Not on its own. DPI only relates pixels to inches in theory; unless the print path honors it and prints at true scale, fit-to-page still overrides it. Print a true-size file at 100% instead.
I cropped it to the right shape — why is the size still wrong?
Cropping only changes pixels, not physical size. The shape looks right but carries no fixed measurement. Build the image at a real size in Perfect Print so it has true dimensions.
How do I know it printed correctly?
Measure the print with a ruler. If you built it at a set size and printed at 100%, it should match exactly. If not, check that the scale is 100% and the paper size matches your layout.