Direct answer. Set the photo to 8 × 10 in (203 × 254 mm) in PrintExactly, place it on Letter or A4 portrait, confirm Scale to Fit is off and Scale is 100%, then print.

The 3-step method

  1. Set the Photo Frame to 8 × 10 in (203 × 254 mm). Open PrintExactly and type 8 in × 10 in, or 203 × 254 mm, as the Frame dimensions. This is the standard portrait-print size and the most common physical frame insert above 4 × 6.
  2. Place on Letter or A4 portrait. 8 × 10 fits a single sheet of Letter or A4 in portrait orientation. Use two-up or fit-other-items if you have additional photos.
  3. Verify printable area and 100% scale, then print. Turn off Scale to Fit, set Scale to 100%, and confirm the printable area shows the full 8 × 10 box. Send the job.

Why an 8 × 10 photo prints the wrong size on Mac

  • Borderless expansion. Borderless modes shift the printed size by 1–2% to fill the paper edge. Use a bordered paper size for exact-size 8 × 10 output.
  • Photo paper preset scaling. Glossy photo paper presets in some drivers apply their own scaling. Open the driver's preferences and set Fit to Off or 100%.

Frequently asked questions

How big is 8 × 10 in millimeters?

8 × 10 inches = 203.2 × 254 mm, typically rounded to 203 × 254 mm. PrintExactly accepts both forms.

Can I print an 8 × 10 with smaller reference prints on one sheet?

Yes. Add an 8 × 10 and a few smaller items, and PrintExactly packs them on one sheet for an 8 × 10 plus reference prints job.

Print a photo at exact size on Mac · Full exact-size Mac guide