Tile my poster.

A home printer on a desk prints a 112 × 58 cm poster sheet by sheet from the picture on a phone beside it: 12 sheets of A4, each carrying its slice of the picture with its corner label (A1 to D3) and faint trim marks, slide out one after another onto a growing stack; then the finished stack lifts and the view pulls back.

The 12 printed sheets glide off the stack and settle into their 4 × 3 grid on the wall above the printer; the overlap bands glow briefly and fade; the view pulls back until the whole 112 × 58 cm poster is in view at full size beside a 180 cm silhouette standing on the floor, and holds there.

On a plain wall in warm light a hand rolls wheat-paste glue on in a wide stripe; the assembled 112 × 58 cm poster rises and meets the wall top edge first; the roller sweeps down across the paper, smoothing it flat as the glue sheen and the small wrinkles disappear under it; the last corner presses down, the poster sits flush on the wall and the view drifts back to show the room.

Before · 41 PPI

After · 163 PPI

One printed sheet of the 112 × 58 cm poster — sheet A2 of 12 — shown up close twice: on the left the picture as it is, 41 PPI on this poster (acceptable); on the right the same sheet after the real 4× AI upscale the print pipeline runs (Real-ESRGAN on the NVIDIA GeForce RTX 4070), 163 PPI (excellent). Scrolling wipes the sharpened sheet across the soft one; the caption reads the sharpness change: 41 PPI → 163 PPI.

The same printer prints the calibration sheet — four corner markers, rulers on both axes, fine edge rulers 0 to 20 mm — and it slides onto the desk. Up close, the 100 mm verification ruler draws itself to its full length and measures 100.0 mm. A phone photographs the sheet and finds the four markers; the unprinted strips its edge rulers reveal, 3.0 mm at the top, 3.0 on the right, 5.0 at the bottom and 3.0 on the left (± 0.5 mm), snap one by one into a printer profile card, which is saved.

One artwork lifts off the desk and hangs on the wall, then fans into the five ratio families sellers list, each cropped by the engine and labelled with its print sizes: 2:3 (4x6 to 24x36 in), 3:4 (6x8 to 18x24 in), 4:5 (4x5 to 16x20 in), 11:14 (11x14 to 22x28 in), A series (A5 to A1). The five then pack into one ZIP, northloft_S042.zip, named file by file by the seller's template (northloft_S042_2x3_24x36in_300dpi.jpg and so on) — 31 files with the print-at-home PDFs, the previews and a README — and a checkmark lands: no watermark on any of them, ever.

The 12 A4 sheets lift off the printer stack one by one and settle into their 4 × 3 grid, labelled A1 to D3.