Split one image into a grid for printing or posting

A poster too big for A4, a panorama too wide for a feed, a game map to share in pieces. Grid-splitting one image into tiles solves all three.

Tools used in this guide

The job

One image needs to become many: printed across four A4 sheets, posted as a 3×3 grid, or shared in pieces small enough to attach. The splitter cuts it into equal tiles and gives each tile its own file.

Pick the grid

Open Image splitter, drop the image in, and set rows and columns. A 3×3 grid makes nine tiles; 2×2 makes four. Tiles are numbered by row and column — tile-1-2 is the first row, second column — so reassembling them is just reading the filenames in order.

Up to 12 rows and 12 columns, 64 tiles total, each at least 8 px.
If the image does not divide evenly, the last row and column get the extra pixels — tile sizes can differ by a few px.

Worked example

A 3000 × 2000 poster split 2×2 produces four 1500 × 1000 tiles — each fits an A4 sheet at print resolution. Download them individually, or use “Download all (.zip)” for one archive.

Limits and gotchas

JPG output loses transparency — use PNG when the source has it. Animated images are not supported; split the first frame only if that is acceptable. The zip is built in memory, so splitting a 20 MB PNG into 64 tiles can briefly use several hundred MB of memory.