Bleed, trim and safe area: three boundaries to plan before export
Work through a 5 × 7-inch card with a sample bleed allowance and understand which measurements belong in your pixel canvas.
Read articlePrint tools
Start with a physical size and a target PPI. Calculate a whole-pixel canvas with an explicit rounding choice.
8 × 10 in at 300 PPI · nearest pixel
Nearest-pixel rounding can fall slightly below the target on one axis. Use Round up when the target is a strict minimum.
This is the canvas size. Changing a file’s PPI metadata alone does not create these pixels.
| Print width | 8 |
|---|---|
| Print height | 10 |
| Size unit | Inches (in) |
| Target resolution | 300 PPI |
| Pixel rounding | Nearest whole pixel |
| Required width (px) | 2,400 |
|---|---|
| Required height (px) | 3,000 |
| Exact width before rounding (px) | 2,400 |
| Exact height before rounding (px) | 3,000 |
| Effective width PPI | 300 |
| Effective height PPI | 300 |
Behind the numbers
Pixels = physical size in inches × target PPI, then round as selected.
Bleed, printer margins, color profiles and file format requirements are separate. Integer rounding can slightly change the effective PPI or aspect ratio.
Results use the numbers you enter. See the methodology for precision, accepted ranges and sharing behavior.
References checked September 28, 2026. Calculations and worked examples are our own.
Useful answers
A4 is defined as 210 × 297 mm. At 300 PPI its unrounded dimensions are about 2480.315 × 3507.874 px. Nearest gives 2480 × 3508; rounding up gives 2481 × 3508. Using rounded inches as the input can produce another answer.
No. Presets describe the nominal finished dimensions. Add the bleed your print provider requests before calculating the file size, and keep any required safe area inside the finished page.
Round up when each axis must meet at least the entered PPI. Nearest is the closest whole-pixel approximation, but can put an axis just below the target. Both are dimension choices; neither guarantees image quality.
A practical next read
Work through a 5 × 7-inch card with a sample bleed allowance and understand which measurements belong in your pixel canvas.
Read articleWork from your original pixels to a realistic print size, then account for cropping, viewing distance and the file you actually send.
Read articleCompare three familiar print shapes using one 3000 × 2000 photo, with crop dimensions, retained area and orientation explained.
Read articleConvert pixels to inches, cm or mm at any PPI. Convert one measurement instantly, compare a PPI table, or calculate the width and height of an image.
Open toolCalculate the DPI (PPI) of an image at your print size: DPI = pixels ÷ inches. Choose a local image or enter its pixels, then compare fit versus crop.
Open toolReduce a pixel pair to its aspect ratio, then calculate a new width or height while keeping the original proportions.
Open tool