How to Split One Image Into Multiple Parts Online (Perfect for Instagram Grid & Posters)

That big panoramic shot you have? The infographic that would look amazing as a 3-panel Instagram grid? Or the poster you need to print in tiles because your printer can't handle A0 size? All of these need the same thing: splitting one large image into multiple equal parts.

It's simpler than it sounds.

Why Split an Image?

Instagram grid posts — Ever seen those accounts where 3, 6, or 9 posts form one giant image when you look at the profile grid? That's a split image. The trick is splitting your wide image into equal vertical slices and posting them right to left (because Instagram shows newest posts first, but the grid reads left to right).

Poster printing — Large format images that need to be printed across multiple sheets of A4 paper can be split into tiles, printed individually, and assembled.

Puzzle creation — Splitting a photo into a grid of equal pieces for a custom jigsaw or game.

Website design — Some designs need an image displayed as a grid with gaps between sections.

How to Split an Image

1. Open the Image Splitter tool in your browser.

2. Upload your image.

3. Choose how to split: by number of rows/columns (e.g., 1×3 for a 3-panel Instagram post, or 3×3 for a 9-grid) or by specific pixel dimensions.

4. Download the individual pieces as a ZIP file.

Each piece is numbered in order so you know exactly which piece goes where.

The Instagram Grid Trick (Step by Step)

For a perfect 3-panel Instagram grid:

1. Start with a landscape image at 3240×1080 px (3× the standard 1080×1080 square)

2. Split it into 3 equal vertical parts using 1 row × 3 columns

3. You get three 1080×1080 images: left, center, right

4. Post them to Instagram in reverse order: right first, then center, then left

5. When people visit your profile, the grid shows them in correct order from left to right

For a 9-panel grid, use a 3240×3240 image and split into 3×3. Post all 9 in reverse order (bottom-right first, ending with top-left).

Quality Note

Splitting doesn't degrade quality — each piece is a crop of the original, so the pixels are identical. Unlike some operations that re-compress the image, splitting is lossless. Your output files will be sharp.

If you need to resize the original image before splitting, use the Image Resizer first to hit the exact dimensions you need.