Lay the shirt flat, shoot straight down (camera square over the shirt, not at an angle).
2 · Calibrate
Drag the magenta dots to the armpit seams. If you fill in the height too, drag the teal dots from the neckline seam to the bottom hem — it's used to warn you if the photo is at an angle.
Saved Shirts
Saves the photo and calibration on this device (max 6) so repeat blanks skip setup. Nothing is uploaded.
3 · Design
Placement presets draw a standard-size guide box (left chest ~3.75" wide, center chest 10", full front 11", each starting ~3" below the collar) and snap the design into it if one is loaded. Calibrate first.
Drag the design to position it. Pinch (or scroll on a computer) to resize — or type an exact print width above. The big number is what you print at.
4 · Export
Sheet × in
Leave mirror OFF if your print software already mirrors — double-mirroring is the classic mistake. When the design splits, each tile includes the overlap and small tick marks show the true seam: trim there and butt-join the tiles on the press (don't overlap transfers — the overlap double-presses and darkens).
PDF is the safe choice: pages carry their real size, so printing at "Actual Size" / 100% comes out exact. PNGs are for print software that wants loose images (transparency is kept; PDF flattens onto white).