Print a picture bigger than your printer.

megaprint cuts one picture into overlapping borderless sheets for the Epson ET-8550. Hang each sheet over the edge of the last and the seams disappear.

Download for Mac Free · version 0.1.0 · 11.7 MB

Free · macOS 14+ · Notarized by Apple · No account, no internet

megaprint showing Hokusai's Red Fuji split into four 13 × 19 sheets, 2 across and 2 down, for a print 38 × 25 inches. The side panel shows paper, sheet count, arrangement, sharpness and the ink choices.

1 · Pick paper and sheets

13 × 19, 11 × 17, 8.5 × 11 or 4 × 6, from 2 to 25 sheets. megaprint shows the finished size, what gets trimmed, and how far back you need to stand before it looks sharp.

2 · Print the calibration sheets

Faint outlines of your picture with a ruler on every edge. They use barely any ink, show whether the sheets line up, and tell you how much the printer crops at each edge.

3 · Print it for real

Switch to Color or B&W and make the sheets: one 300 ppi file per sheet. Each sheet carries a hairline where the next one's edge goes.

Settings in Epson Print Layout

Paper Source: Rear Paper Feeder – Borderless
Paper Size: Super B (13 × 19 in). International Epson drivers call it A3+.
Layout: Scale to Fit on, Expansion off. The status bar should say 300 ppi.

Version 0.1.0 is new. It doesn't yet correct for the slight enlargement that borderless printing adds, so print the calibration sheets first.