A number in, a grid out
Most splitters ask for rows and columns. People more often know how many pieces they want: six prints for a shelf, twelve squares for a calendar, twenty cards for a classroom game. This page starts from that number. Every way of writing it as columns times rows is a candidate, and the one that gives each piece the most picture-like shape on your picture is applied automatically.
The ranking uses the real picture, not an assumed one. Six parts of a 4:3 landscape are best as three across and two down, which gives pieces of 1:1.13; the same six parts of a portrait are best as two across and three down. The alternatives never disappear: they sit as chips under the number, labelled with their layout, and pressing one redraws the cuts.
What the solver picks for a 4000 × 3000 photo
- 6 parts: 3 × 2, from 3 × 2, 2 × 3, 6 side by side, 6 stacked.
- 12 parts: 4 × 3, from 4 × 3, 3 × 4, 6 × 2, 2 × 6, 12 side by side, 12 stacked.
- 20 parts: 5 × 4, from 5 × 4, 4 × 5, 10 × 2, 2 × 10.
4000 × 3000 → 12 files · columns 1000 + 1000 + 1000 + 1000 = 4000 px · rows 1000 + 1000 + 1000 = 3000 px
| File | Cell | From x, y | Pixels |
|---|---|---|---|
| board-r1c1.png | row 1 · col 1 | 0, 0 | 1000 × 1000 |
| board-r1c2.png | row 1 · col 2 | 1000, 0 | 1000 × 1000 |
| board-r1c3.png | row 1 · col 3 | 2000, 0 | 1000 × 1000 |
| board-r1c4.png | row 1 · col 4 | 3000, 0 | 1000 × 1000 |
| board-r2c1.png | row 2 · col 1 | 0, 1000 | 1000 × 1000 |
| board-r2c2.png | row 2 · col 2 | 1000, 1000 | 1000 × 1000 |
| board-r2c3.png | row 2 · col 3 | 2000, 1000 | 1000 × 1000 |
| board-r2c4.png | row 2 · col 4 | 3000, 1000 | 1000 × 1000 |
| board-r3c1.png | row 3 · col 1 | 0, 2000 | 1000 × 1000 |
| board-r3c2.png | row 3 · col 2 | 1000, 2000 | 1000 × 1000 |
| board-r3c3.png | row 3 · col 3 | 2000, 2000 | 1000 × 1000 |
| board-r3c4.png | row 3 · col 4 | 3000, 2000 | 1000 × 1000 |
Prime numbers and limits
Some numbers have no grid. Five, seven, eleven and thirteen are prime, so the only equal splits are strips. Up to twelve the board offers both strip directions and explains why nothing else appears; above twelve a strip set would exceed the board’s twelve pieces a side, and it suggests the nearest numbers that work. It never silently rounds your number to a different one.
Equal is equal in whole pixels. When the picture does not divide exactly, some pieces are one pixel larger than others, and the inspector lists every width and height so the difference is visible before you save.
How to do it here
- Open the picture. Drop it on the board, browse, or paste it.
- Type the number of parts. Enter it in Split into equal parts. The best grid is applied at once.
- Choose another layout if you like. Every other way to lay out that number is a chip underneath.
- Cut. Press Cut into N files. The ZIP carries the files and an index.
