Split Image
Cut a large image into a grid or fixed heights and save the pieces in order. Runs in your browser with no upload.
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Split Image: complete guide
Walk through the steps and examples, or jump straight to the topic you need.
At a glance
- Supported formats
- One image that the browser can open, up to 40 MB and 20,000 px on a side.
- Split methods
- Grid, horizontal slices, vertical slices, every fixed height.
- Number of pieces
- A grid has up to 12 pieces across and 12 down, and up to 200 pieces in total.
- Preview
- Shows where it will be cut as lines and numbers over the picture.
- Gaps and overlaps
- Leftover pixels are spread across the pieces so the widths add up to the original.
- Quality
- PNG keeps the original pixels as they are, and JPG is recompressed.
- Names
- Numbered horizontally from the top left, padded to the same number of digits.
- Where it runs
- The image is not sent to a server and is cut only in this browser.
How to use Split Image
Add one image
Drag it in or click to choose one. If a side is over 20,000 px, it tells you to shrink it first.
Choose a split method
To split a photo into nine cells, a grid is convenient, and for a tall notice, every fixed height is easier. You can also cut only horizontally or only vertically.
Check the preview
The cut lines and piece numbers appear right on the picture. The number of pieces and the size of each are also shown below, so check them before saving.
Save as a ZIP
You download a ZIP with the pieces in numbered order. PNG is the default, and to make the files smaller, turn on JPG. The original stays as it is.
What it’s good for
We show you where it will be cut first
Once you choose a split method, lines and numbers appear right on top of the picture. It also shows how many pieces you will get and how big each one is, so you can picture the result before saving. You can split into a grid, only horizontally, only vertically, or at every fixed height, so it also handles tall images such as a long notice or a webtoon.
Stitched back together, it matches the original
If a pixel disappears or overlaps at a size that doesn't divide evenly, a line shows when the pieces are joined. This tool spreads the leftover pixels one at a time across the earlier pieces, so the widths of the pieces add up exactly to the original. Pieces are cut out as they are without resizing, so saving as PNG doesn't lower the quality.
Worked examples
A square photo into nine cells
1080×1080 photo · grid 3×39 pieces · piece size 360×360
photo-1.png ~ photo-9.pngCutting a long notice by height
800×2500 image · fixed height 1000px3 pieces · 1000, 1000, 500pxWhich method to choose
Swipe the table sideways to see the rest.
| Method | When to use it | Shape of the pieces |
|---|---|---|
| Grid | When splitting a photo into many cells | Split both horizontally and vertically |
| Horizontal slices | When splitting only top to bottom | Width stays the same as the original |
| Vertical slices | When splitting only left to right | Height stays the same as the original |
| Every fixed height | Very tall images | Only the last one may be shorter |
When the result isn’t what you expected
It says the pieces are too small
The setting would make a piece smaller than 8 px. Reduce the number of pieces or use a larger image.
A line shows when I stitch them back together
The pieces from this tool have no gaps or overlaps. Check whether the program you use to join them has added a margin between the pieces.
The background turns black when saved as JPG
JPG can't hold transparency. For an image with transparent parts, save it as PNG.
It says it couldn't bundle them into a ZIP
If the total of the results exceeds 100 MB, it can't be saved. Try reducing the number of pieces or saving as JPG.
Key terms
- Grid split
- A way of splitting both horizontally and vertically into a checkerboard.
- Lossless
- Means the quality stays the same because the pixels are not recompressed.
- Zero padding
- Filling the front with zeros, as in 01, 02, so that the file order doesn't get scrambled.
- ZIP
- A compressed file that bundles several files into one.
Split Image FAQ
Won't the order of the pieces get mixed up?
No. Numbers are assigned horizontally from the top left, padded to the number of digits the count needs. Even past 10 pieces they are named 01, 02 and so on, so the order is preserved in a file list.
Does the quality drop?
Not if you save as PNG, because the original pixels are copied as they are. Choosing JPG makes the files smaller, but they are recompressed and lose a little quality.
How many pieces can I make?
Up to 200 pieces at a time. A grid can have up to 12 pieces across and 12 down, and images up to 40 MB and 20,000 px on a side are handled.
Can I put the pieces back together?
This tool has no joining feature. However, the pieces have no gaps, so joined together they come back to the same size as the original. To join them side by side, try the image stitching tool.
Can I split several images at once?
For now it handles one at a time. The right way to split differs by image, so it is safer to check with the preview as you go.
The pieces aren't all the same size
If the original size doesn't divide evenly by the number of pieces, the earlier pieces are 1 px larger. This is how it avoids throwing away pixels, and the difference isn't visible to the eye.