Why seamless carousels outperform single posts
A seamless carousel — one wide image flowing across multiple slides — earns engagement twice. The swipe itself counts as an interaction that feeds Instagram's ranking, and an unfinished image is a powerful reason to swipe: the eye wants to see the rest. Photographers use the format for panoramas, designers for step-by-step visuals, and brands for reveal sequences. The catch is precision: if any slide is a few pixels wider than its neighbors, or Instagram re-crops a slide because the aspect ratio was off, the illusion breaks exactly at the moment of the swipe.
This splitter removes both failure modes. Your image is divided into mathematically equal slices — every slide is the same width down to the sub-pixel — and exported at Instagram's exact supported sizes (1080×1350 portrait or 1080×1080 square), so the platform has no reason to crop anything. When your image's proportions don't perfectly match the slide count, the cut-line preview shows precisely what's kept, and a position slider lets you choose which part of the image survives. The swipe preview lays your slides side by side with a thin gap so you can verify the flow before downloading.
Everything renders through the Canvas API on your device: no upload, no queue, no watermark, no account. Slides download numbered in posting order (slide-01, slide-02, …) so you can drag them straight into Instagram without re-sorting.
Frequently Asked Questions
How do I split an image into an Instagram carousel? ›
Drop your wide image into the splitter, choose how many slides you want (2–10) and the slide shape (portrait 1080×1350 or square), adjust the crop position if needed, and download the numbered slides. Upload them to Instagram in order and the image flows seamlessly as people swipe.
What size should seamless carousel slides be? ›
1080×1350 pixels (4:5 portrait) gives you the most screen space and is the recommended size. Square 1080×1080 also works. The crucial part is that every slide is exactly the same size and the cuts are pixel-perfect — which is what this tool guarantees.
Why do my carousel slides look misaligned after posting? ›
Two common causes: the slides weren't cut at exact equal widths (manual cropping drifts by a few pixels), or Instagram cropped your slides because they weren't a supported aspect ratio. This tool cuts mathematically equal slices at Instagram's exact supported sizes, so neither happens.
How many slides can an Instagram carousel have? ›
Instagram carousels support up to 20 slides for most accounts. For seamless panoramas, 3–6 slides is the sweet spot — enough for the wide effect while keeping each slide detailed. This tool splits into up to 10.
Should I export carousel slides as PNG or JPG? ›
JPG at 92% quality is ideal for photos — Instagram re-compresses everything to JPG anyway, and smaller uploads process faster. Use PNG for graphics with sharp text or flat colors, where JPG artifacts are most visible.
Is my image uploaded to a server? ›
No. The image is sliced using the Canvas API directly in your browser. Nothing is transmitted anywhere, there's no file size limit, and no watermark is added.