Instagram carousel splitter for seamless slides
Drop one wide image, pick 1:1 or 4:5, and download slides that line up edge to edge in the carousel. Runs in your browser; your image never leaves your device.
How to split an image into a carousel
Drop in one wide image
A panorama, a wide product shot or a long graphic. It is read in your browser and never uploaded.
Pick 4:5 portrait or 1:1 square
Every slide in a carousel shares one ratio. 4:5 takes up more of the screen in the feed.
Choose how many slides
Anywhere from 2 to 20, the most the Instagram app accepts in one carousel. The tool suggests a count from your image's shape, so the slides use as much of the image as possible.
Check the cut lines
The preview draws each cut as a dashed line and dims anything left out. Move to a different count if a face or a word lands on a cut.
Download and post in order
The slides come out numbered. Add them to one Instagram carousel in that order and do not re-crop them in the app, or the seams stop lining up.
Carousel sizes by slide count
A seamless carousel is one wide canvas cut into equal slides. Each slide is 1080 pixels wide, 1080 × 1350 at 4:5 or 1080 × 1080 at 1:1, so the full canvas is 1080 times the number of slides across. Start from an image at least this size and every slide comes out at full resolution; a smaller image still splits cleanly, just at a lower resolution, and is never scaled up.
Up to 20 slides is the limit when you post from the Instagram app. Scheduling tools publish through Instagram's API instead, which still allows 10 per carousel, and that includes PlanBatch.
| Slides | 4:5 portrait canvas | 1:1 square canvas |
|---|---|---|
| 2 | 2160 × 1350 | 2160 × 1080 |
| 3 | 3240 × 1350 | 3240 × 1080 |
| 4 | 4320 × 1350 | 4320 × 1080 |
| 5 | 5400 × 1350 | 5400 × 1080 |
| 6 | 6480 × 1350 | 6480 × 1080 |
| 7 | 7560 × 1350 | 7560 × 1080 |
| 8 | 8640 × 1350 | 8640 × 1080 |
| 9 | 9720 × 1350 | 9720 × 1080 |
| 10 | 10800 × 1350 | 10800 × 1080 |
| 12 | 12960 × 1350 | 12960 × 1080 |
| 15 | 16200 × 1350 | 16200 × 1080 |
| 20 | 21600 × 1350 | 21600 × 1080 |
Which ratio should I use?
Instagram carousels accept 1:1 squares and 4:5 portraits. 4:5 fills more of the screen and is what most brands post; every slide in one carousel must share the same ratio, which is why this tool cuts them all from a single strip.
Keep faces and text off the seams
The slides line up perfectly, but a viewer only ever sees one at a time while swiping. A face or a word that straddles a cut is split across two screens and reads badly even though the panorama is technically seamless. Change the slide count until the cuts fall on sky, wall or empty space.
Mind the profile grid
Only the first slide shows on your profile grid, and since January 2026 the grid crops every thumbnail to 3:4. Check slide one in our grid crop checker before you post.
Making these in batch?
Splitting one panorama is a one-off job. If you post carousels regularly, PlanBatch generates branded slides from a spreadsheet, one row per post, and schedules the whole batch to publish itself.
Thirty carousels from one CSV
Templates, brand kits, a calendar, and automatic publishing to Instagram, Facebook and LinkedIn.
More free tools
All free, all no signup, all running in your browser.
Grid crop checker
See exactly what the profile grid keeps of your post since the January 2026 change, and what gets cropped away.
OpenCaption length checker
One caption against every network at once, with the exact number of characters to cut.
OpenImage size checker
See which post formats your image already fits, and what square, portrait, story and pin each crop away.
OpenLinkedIn carousel PDF
Turn slide images into the PDF LinkedIn needs for a swipeable carousel, every page the same size.
OpenCSV checker
Check a bulk-upload CSV against your scheduler's own rules, row by row, before it rejects or skips anything.
OpenCommon questions
How many slides can I split an image into?
Between 2 and 20, the most the Instagram app accepts in one carousel. If you schedule through a tool that publishes via Instagram's API, the limit there is still 10. You also choose whether the slides come out as 1:1 squares or 4:5 portraits, and the preview shows the cuts before you download.
What do I get back?
One numbered JPG per slide, named so they stay in order. Upload them to Instagram in that order and the seams line up into the original image.
What size should each carousel slide be?
1080 × 1350 pixels for 4:5 portrait slides, or 1080 × 1080 for 1:1 squares. Instagram displays carousels 1080 pixels wide, so that is what this tool exports; a smaller source image produces smaller slides rather than being scaled up.
Why do my slides not line up on Instagram?
Almost always because they were re-cropped or reordered while posting. Add the slides in their numbered order and leave Instagram's crop at the original size; the files already have the exact ratio, so any further crop shifts the seam.
Can I mix 4:5 and 1:1 slides in one carousel?
No. Instagram gives every slide in a carousel the same ratio as the first one, which is why this tool cuts all of them from a single strip at one ratio.
What if my image is not wide enough for the slides I want?
The tool takes the widest centred strip your image can fill at the chosen ratio and splits that, so a little is trimmed from the top and bottom. Pick fewer slides, or switch to 1:1, to keep more of the height.
Is my image uploaded anywhere?
No. The splitting happens in your browser and the files are produced locally. Nothing is sent to a server.
Does it add a watermark?
No. The slides are your image, cut and nothing else. There is no watermark, no signup and no limit on how many images you split.