Printing coloring pages: A4, US Letter and DPI

Updated 2026-07-26 · 5 min read

For crisp printed coloring pages, print at 300 DPI on A4 (210 × 297 mm) or US Letter (8.5 × 11 in). At 300 DPI a full A4 page needs about 2480 × 3508 pixels. Use 'Fit to page', 100% scale and turn off 'fit to margins' stretching so lines stay sharp and proportions stay correct.

Paper sizes, in plain numbers

Two paper sizes cover almost everyone. A4 is the international standard at 210 × 297 mm (8.27 × 11.69 in). US Letter, common in North America, is 8.5 × 11 in (216 × 279 mm). They are close but not identical: Letter is a little wider and a little shorter than A4.

Because the shapes differ slightly, a page laid out for A4 will have thin extra margins on Letter, and vice versa. That is normal and harmless for coloring pages — just avoid any print option that stretches the image to fill, because stretching distorts circles and faces.

What DPI actually means

DPI (dots per inch) describes how many pixels are packed into each printed inch. 300 DPI is the standard for crisp printed line art; below about 150 DPI you start to see soft or stair-stepped edges.

To print a full page at 300 DPI you need enough pixels to cover it: roughly 2480 × 3508 px for A4 and 2550 × 3300 px for US Letter. Coloring pages generated at these sizes print cleanly; a small thumbnail blown up to full page will look fuzzy no matter what your printer does.

Print settings that keep lines sharp

The defaults in most print dialogs are fine, with a few things to check.

Scale: 100% or 'Fit to printable area' — not 'Fill' or 'Stretch'.
Quality: choose 'Best' or 'High' rather than 'Draft' for solid black outlines.
Color: 'Black and white' or 'Grayscale' saves color ink and keeps lines clean.
Margins: leave the printer's default borderless setting off unless you specifically want edge-to-edge.
Paper: 90–120 gsm paper resists marker bleed better than thin 70–80 gsm copy paper.

PDF vs PNG for printing

A print-ready PDF already carries the correct page size and is the most predictable way to print at home or a copy shop. A high-resolution PNG is more flexible for placing into worksheets or documents. For a single page you plan to color, the PDF is usually the simpler choice.

Step by step

Pick the paper size. Choose A4 or US Letter to match your printer's tray.
Download the high-resolution file. Use the print-ready PDF or a PNG around 2480 × 3508 px for A4.
Set scale to 100%. In the print dialog select 100% or 'Fit to printable area', never 'Fill'.
Choose grayscale, high quality. Print in black and white on 'Best' quality for solid, sharp outlines.

FAQ

Why does my printed page look pixelated?

The source image is too small for the paper. Print from a full-resolution file (about 2480 × 3508 px for A4) instead of a preview thumbnail.

A4 or US Letter — does it matter?

Use whichever your printer holds. The layouts work on both; just avoid 'stretch to fit', which distorts shapes on the size it was not designed for.

What paper weight is best for markers?

90–120 gsm reduces bleed-through. Standard 80 gsm copy paper is fine for crayons and colored pencils.