Image Splitter

Cutting one picture into a neat grid of pieces sounds like a five second job right up until you try it. In an image editor it is a lot of guides, a lot of arithmetic and a lot of exporting. I built this because I wanted a nine tile grid post for a profile and every site that offered it asked me to sign in first. Drop an image here, choose how many rows and columns you want, and download every tile in a single zip.

You can pick a ready made grid from 2x2 up to 5x5, or set custom rows and columns when the shape you need is not square. The cut lines are drawn over your image before anything is exported, so you can see exactly where the seams will fall and adjust before committing. Tiles come out named in reading order, left to right and top to bottom, so nothing has to be guessed later. It all runs in your browser and your image is never uploaded. If the picture needs trimming to the right shape first, the crop tool is the step before this one.

How to use

1. Drop your image onto the box, or press the button and choose a file.
2. Pick a grid size. The presets run from 2x2 through 5x5 for the common cases.
3. Or set custom rows and columns when you need something like 3 rows by 1 column.
4. Look at the preview. The cut lines are drawn over your image so you can see where every seam lands.
5. Adjust the rows and columns until nothing important is sliced through the middle.
6. Press the download button to get all the tiles in one zip file.
7. Unzip it and check the file names, which run in reading order from the top left tile onwards.

Why use our image splitter?

The preview is the feature that saves you from redoing the whole thing. Splitting an image blind is how you end up with a face bisected by a seam or a logo cut in half across two tiles. Seeing the lines first turns the job into a design decision instead of a gamble, and shifting from a 3x3 to a 3x2 takes one click.

The part I got wrong first was file naming. My early version named tiles in whatever order the code happened to finish them, which was fine for me and a nightmare for anyone reassembling a grid at midnight. Now the names run in strict reading order, so tile one is the top left corner and the last tile is the bottom right. Everything arrives in one zip rather than a shower of separate downloads, which browsers handle badly and phones handle worse.

Nothing is uploaded. The image is drawn onto a canvas in your browser using the standard drawImage operation, and each tile is cut from that canvas on your own machine. For a holiday photo that hardly matters, but people also split floor plans, site maps, event artwork and unreleased product shots, and none of those should be sitting on a stranger's server because you wanted a grid.

One honest note on the math. Tiles are equal in size, so when your image dimensions do not divide cleanly by your chosen rows and columns, a pixel or two of rounding lands at the edges. Nobody will ever see it in a photograph. It can matter if you are slicing a precisely aligned technical graphic, so for those jobs it is worth sizing the source image to a number that divides evenly. The image resizer makes that a ten second job before you split.

What I refuse to add is an account connection. Several grid tools ask to link your social profile so they can post the tiles for you, which means handing posting rights to a website you found in a search result. Uploading the tiles yourself takes an extra minute and costs nothing. There is no signup here, no watermark, and no cap on how many splits you run.

Who is this tool for?

The grid profile post is the headliner. One striking image split into nine tiles and posted in the right order fills a row of a profile with a single picture, which still stops people scrolling. Remember that the platform shows the newest post first, so the tiles go up in reverse: the bottom right piece is posted first and the top left piece last. Once the images are ready, the Instagram hashtag generator handles the captions.

Print and craft work is the quieter use. Splitting a large graphic across several sheets lets you print a poster on a home printer and tape the panels together. Teachers do this for classroom displays, and quilters and mosaic makers use the same trick to break a reference image into workable sections.

Developers and designers slice big sprite sheets, mockups and long screenshots into pieces that can be reviewed or shipped separately. It is also handy for splitting a wide banner into segments for a carousel post, where each slide holds one part of a continuous scene.

Then there is the case nobody plans for: an image too large for an upload limit. Splitting it into four tiles gets each piece under the cap, which is not elegant but has rescued more than one deadline.

Frequently asked questions