What splitting an image into a grid means
Splitting divides one image into equal rectangular tiles using a grid of rows and columns. A 2 by 2 grid gives four tiles, a 3 by 1 grid gives three tall strips side by side, and so on. Each tile is a separate image file made from its own part of the original.
The tool measures your image, divides the width by the number of columns and the height by the number of rows, and copies each piece into its own canvas. Tiles are numbered row by row, starting at the top left and moving right, then continuing on the next row. If the image does not divide evenly, a tile edge can land partway through a pixel, so expect at most a tiny rounding difference at the boundaries.
Why you might cut an image into pieces
The most familiar use is a multi-panel social post, where a wide picture is cut into tiles that line up when viewed together in a grid. Another is breaking a large poster or diagram into smaller parts that are easier to print on regular paper, or into sections that fit upload size limits.
It also works for puzzle-style layouts, for teaching or game material, and for isolating each frame of a contact-sheet style image. If you only need one rectangular region rather than all of the equal parts, the Crop Image tool is a better fit.
How to split an image with this tool
- Drop an image onto the upload area, or click to choose one.
- Enter the number of Rows and Columns. Both start at 2, and the fields accept values from 1 to 10.
- Click Split image. The tiles appear below in the same layout as the original grid.
- Click a tile to download it. A download icon shows when you hover over it.
- Click Start over to load a different image.
Tiles are saved one at a time as PNG files named tile-1.png, tile-2.png, and so on, matching the numbering order. There is no single button that downloads all tiles at once, so with a large grid you will click each tile in turn. Nothing is uploaded; the cutting happens in your browser.
Planning your grid
Choose the grid before you split, because the tile size is simply the image size divided by your numbers. A 3000 by 2000 image split into 3 columns and 2 rows produces six tiles of 1000 by 1000 pixels each. If you need tiles of a particular shape, such as squares, pick the row and column counts to match the image's proportions, or crop the image to the right ratio first.
The tiles are full-resolution slices, so each one is smaller than the original but not scaled. Changing the rows or columns after splitting does nothing until you click Split image again. The output is always PNG, which can make files larger than the source if it was a JPG. To rebuild the original later, or to combine tiles in a different arrangement, use the Image Joiner. The tool does not add gaps, labels, or overlap between tiles.