To split an image into 12, drop it into the splitter above. The default is 3 rows by 4 columns, which suits a wide source. Switch to 4 rows by 3 columns for a four-row Instagram grid. Twelve tiles download as one ZIP, and the split runs entirely in your browser.
Drop an image here
or , or paste with Ctrl+V
JPG, PNG, WebP, GIF, BMP and AVIF, up to 50 MB.
Drag any line to move a cut. Tab to a line and use the arrow keys to nudge it one pixel, or hold shift for ten.
Vertical cuts give side-by-side pieces. Horizontal cuts stack them.
The tool picks the rows and columns that keep the pieces closest to square.
A shared strip on each seam, so the sheets can be trimmed and taped.
Each piece is resized to the size this page targets before it is saved.
Your image never leaves your device. Splitting runs in your browser with the Canvas API.
| Pieces | 12, in 3 rows of 4 |
|---|---|
| Cut lines | 3 vertical, 2 horizontal |
| Pieces from a 1080 × 1080 Instagram square | 270 × 360 px |
| Pieces from a 1080 × 1350 portrait | 270 × 450 px |
| Pieces from a 4000 × 3000 phone photo | 1000 × 1000 px |
| Pieces from a 1920 × 1080 screenshot | 480 × 360 px |
| Other arrangement of a 4000 × 3000 photo | 4 × 3 gives 1333 × 750 px, last piece 1334 × 750 px |
Twelve is where the rows-and-columns question actually matters, because the two arrangements go to different places.
3 by 4 is three rows and four columns. Wide. A 4000 × 3000 photo gives twelve 1000 × 1000 px tiles, and the whole thing is wider than it is tall. That is the arrangement for a wall of twelve prints in landscape orientation, or a twelve-sheet poster.
4 by 3 is four rows and three columns. Tall. That is the Instagram one. A profile grid is three columns wide, so a picture spread across four rows needs four rows of three tiles, not three rows of four. Get this backwards and you will upload twelve tiles that assemble into something unrecognisable. The arrangement toggle on this page is labelled with rows first for exactly that reason.
Twelve tiles is a lot of manual uploading, so it pays to check the preview before exporting rather than after. Drag the interior lines if a subject sits on a seam. With three interior vertical lines and two horizontal ones in a 3 by 4, there are five chances for a cut to land somewhere awkward.
The split runs on a canvas in this page. Twelve tiles from a 40 megapixel source is still fast, because each tile is drawn and encoded on its own rather than the whole image being held on one canvas.
A profile grid is three columns wide, so twelve posts make four complete rows. Use the 4 rows by 3 columns arrangement, then upload the bottom right tile first and the top left last. Profile thumbnails are cropped to 3:4, so keep anything important in the middle of each tile.
Three rows of four frames turns one photograph into a full wall. Split 3 by 4 so the tiles carry the source aspect ratio, and start with a big file: each of the twelve 1500 × 1333 px tiles from a 6000 × 4000 source is still large enough for a decent print size.
Twelve panels is a year. Split a wide artwork into twelve and use one panel per month, or split a montage back into the twelve pictures it was built from. Drag the cut lines to sit in the gutters when the montage has margins between images rather than butting them together.
Twelve sheets is a genuinely large poster, roughly the size of a door on A4. Use the print splitter rather than a flat 12-tile cut, because taping twelve sheets together needs overlap and cut marks. Give it a target width in millimetres and it works out the sheet arrangement for you.
Drop your file into the splitter above. It cuts three rows by four columns by default, giving twelve equal tiles. Use the arrangement toggle to switch to four rows by three columns if you need a taller layout. Download the twelve files individually or take them all in one ZIP.
No. This tool writes grids as rows by columns. 3 by 4 is three rows and four columns, so it is wide. 4 by 3 is four rows and three columns, so it is tall. Both give twelve tiles, but they assemble into different shapes and are not interchangeable.
Use four rows by three columns, because a profile grid is three squares wide. Twelve tiles then fill four complete rows. Upload the bottom right tile first and the top left last, since the newest post takes the top left position and pushes everything else along.
Divide the source width by the number of columns and the height by the number of rows. A 4000 × 3000 photo split 3 by 4 gives twelve 1000 × 1000 px tiles. No scaling happens, so each tile holds the original pixels from that part of the picture.
Yes. This preset does not crop. It divides the full frame into twelve tiles that each carry the source aspect ratio. Square tiles from a rectangular photo would need a crop first, which is what the 9-square Instagram preset does but this one deliberately does not.
The tool uses whole pixels and gives the remainder to the last tile in each row or column. A 4001 pixel wide image split into four columns gives three 1000 pixel tiles and one 1001 pixel tile. Nothing is resampled, and the tiles still rejoin exactly.