Split a wide photo into a 3-slide Instagram carousel

Cut a picture into a grid, into rows or columns, or along your own cut lines. There is an Instagram carousel preset for 3, 6 or 9 slides.

Drop your files here

.jpg, .jpeg, .png, .webp, .avif · up to 50 MB

Choose files

How to Split Image

1
Add the image
One JPG, PNG, WebP or AVIF file up to 50 MB. Phone photos are turned upright before anything is cut, so the grid lines land where you see them.
2
Set the grid or your own cut lines
Choose columns and rows, or give cut positions as fractions of the frame. Add a gap between the parts, or an overlap if the pieces will be joined again.
3
Download the ZIP
Every piece arrives in pulsarkit-split.zip, named by row and column or numbered in reading order.

Three squares from one picture

The page opens with “Instagram carousel” and “3 slides” selected. Your photo is scaled to exactly 3240 pixels wide, three times 1080; a band 1080 pixels tall is taken from its vertical middle and cut into three 1080 × 1080 squares. Neighbors share their border exactly: the last pixel column of one slide and the first of the next sat side by side in the photo, so a horizon or a bridge runs on from slide to slide. On the stage, two white lines over your photo mark the cuts.

How much of the height survives

Only a 3:1 strip makes it into the slides. A 4:3 camera photo scaled to 3240 × 2430 keeps the middle 44 percent of its height, so sky and foreground go; a 16:9 photo keeps about 59 percent. To choose the strip yourself, cut it first in Crop Image with a custom 3:1 ratio, at least 3240 pixels wide and placed where you want it, and the preset then only scales it. A panorama wider than 3:1 is not cropped at all: its slides come out 1080 pixels wide and shorter than they are wide, 1080 × 810 for a 4:1 panorama.

Order, file names and the gap

The slides are named after your file with -r1c1, -r1c2 and -r1c3, left to right; the “Numbered” option under “File names” gives -01, -02 and -03. Select them in that order when you build the post. Leave “Gap between parts” at zero: a gap removes a strip of the photo between neighbors and shrinks every slide, so 20 pixels of gap gives 1060 × 1060 squares and a jump at each seam. A JPEG source gives JPEG slides at quality 90. For a nine-tile grid instead, set “How to cut” to “Grid” with 3 columns and 3 rows.

Saving the slides on a phone

The cut runs in the phone's browser, so the full-size original never leaves it. “Download all (ZIP)” gives one archive, which a phone's photo library cannot take; open “Download one by one” instead and save each slide with its own button. On an iPhone every tap opens the Share sheet, where Save Image puts the slide in Photos; Android saves each one to Downloads. In our check on October 20, 2026, the page warned that a 3000-pixel-wide image is too narrow for three slides and needs 3240 pixels, so start from the full-size original rather than a copy a messenger has shrunk. If the slides have to be lighter, Compress Image takes all three in one go.

The picture is cut on your device

Decoding, cutting, encoding and zipping all happen in this browser tab. The image is never uploaded, and closing the tab clears it from memory. The parts are written without the EXIF block, so camera details and GPS coordinates do not travel with a picture you are about to post publicly.

Frequently asked questions

How many parts can I make?

Up to 64, for example 8 by 8. Beyond that the pieces stop being useful and the browser spends most of its time encoding rather than cutting, so the tool refuses and suggests a smaller grid. Custom cut lines allow up to nine lines in each direction.

Are pixels lost at the boundaries?

No, not unless you ask for a gap. Without a gap the areas of all the parts add up to exactly the area of the original: the step is rounded up and the last part in each row and column takes the remainder, so nothing falls between two pieces.

What is the overlap setting for?

For pieces that will be joined again. Each part grows outward by half the overlap so that neighbours share a strip of identical pixels. When the parts are printed and taped, or fed to stitching software, that shared strip is what the join aligns on. A 60 pixel overlap gives neighbours a 60 pixel common band.

How do I put the parts back together?

Collage Maker arranges images into a grid, which reverses an even split. If you cut with an overlap, the overlap has to be trimmed or blended when rejoining, because a plain grid layout will show the duplicated strips.

What size do I need for an Instagram carousel?

1080 pixels of width per slide: 3240 for three slides, 6480 for six, 9720 for nine. The height is cropped to 1080 around the centre after scaling. If your picture is narrower than the requirement the tool says exactly how many pixels are missing instead of upscaling it for you.

Does the file go to a server?

No. Decoding, cutting, encoding and zipping all run in your browser. Nothing is uploaded and nothing is stored.

What format will the parts be?

By default the same codec as the source, so a JPEG splits into JPEGs. You can force PNG, which is lossless and passes through an optimiser, or JPEG with a quality you choose between 60 and 100. Sixty-four PNG parts take noticeably longer than sixty-four JPEG parts, which is worth knowing before you pick.