How to Split Images for Instagram Carousels and Panoramic Posts

One of the most eye-catching Instagram techniques is the panoramic post: a single wide image sliced into multiple tiles that sit perfectly side by side in your feed, or swiped through as a seamless carousel. Done well, it makes a profile look like serious creative work. Done poorly — wrong dimensions, misaligned cuts — it looks broken and hurts engagement.

This guide covers the formats, dimensions, and workflow for splitting images cleanly every time.

What Is an Image Split Post?

A split post is a single image divided into 2, 3 (or more) equal vertical slices, each uploaded as a separate Instagram post or carousel slide. The result:

• Panoramic grid — Three side-by-side posts in your feed form one wide image when viewed on your profile.
• Carousel reveal — A single swipeable post where each slide is one section, encouraging users to swipe through.
• Grid banner — A 6-, 9-, or 12-tile design that spans multiple rows and creates a large-format visual across your profile.

Instagram Dimensions You Need to Know

Getting the ratio right is the most critical step. Instagram crops aggressively, and an off-spec image will lose edges.

| Format | Recommended size | Aspect ratio | | ------------------- | ---------------- | ------------ | | Square grid tile | 1080 × 1080 px | 1:1 | | Portrait tile | 1080 × 1350 px | 4:5 | | Landscape tile | 1080 × 566 px | 1.91:1 | | Carousel (portrait) | 1080 × 1350 px | 4:5 |

For a 3-tile panoramic, your source image should be 3240 × 1080 px (3 × 1080 square tiles side by side). For portrait tiles it becomes 3240 × 1350 px.

The golden rule: always produce tiles at 1080 px wide minimum to avoid blurry uploads.

How to Split an Image Step by Step

Option 1 — Use GridPeek's Image Splitter (Free, No Download)

The fastest method. GridPeek's Image Splitter Tool handles the maths for you:

1. Upload your wide source image.
2. Adjust the crop area so the most important visual elements stay inside the safe zone.
3. Choose output mode (Feed posts or Reel covers).
4. Generate and download the 3 numbered tiles as individual PNG files.

The tool generates three matched tiles from one crop with consistent dimensions. Files are numbered to make posting order easier.

Option 2 — Split Manually in Photoshop or Figma

If you need more control over the exact crop area:

Photoshop:

1. Open the source image. Check canvas is at least 3240 px wide.
2. Use Slice Tool → Divide Slice → set 3 horizontal divisions.
3. File → Export → Save for Web → select all slices → export as PNG.

Figma:

1. Import the image as a frame.
2. Duplicate and clip each third using a rectangle mask.
3. Export each section at 2× or 3× resolution.

Both methods work but take significantly longer and require manual renaming.

What Order to Upload For a Panoramic Grid

This is where most people get confused. Instagram displays your most recent post on the left of the top row. So to display a 3-tile panoramic correctly, you must upload the slices right to left:

1. Upload tile 3 (rightmost) first.
2. Upload tile 2 (centre) second.
3. Upload tile 1 (leftmost) third.

After all three are uploaded, they will sit left-to-right as a seamless panoramic on your profile grid.

For a carousel, upload left-to-right — the normal reading order, since swiping goes left.

Tips for Picking the Right Source Image

Not every image works well when split. Look for:

Strong horizontal composition — A landscape, cityscape, or wide product shot where subject matter spans the full width. Portraits usually look strange split across three tiles.

Clean edges between splits — Avoid placing a face or a key design element exactly on the cut line. Zoom out and check where the splits will land before exporting.

Consistent tones across the full width — If one half of your image is dramatically brighter or darker, the tiles will look like different photos rather than one panoramic.

Enough resolution — At minimum 3240 × 1080 px for a 3-column square split. Going lower means Instagram will upscale and blur your tiles.

Carousel-Specific Strategy: The Reveal Format

For carousel posts (published as a single swipeable post), the split technique creates a cinematic reveal:

• The first tile shows an intriguing partial detail — the corner of a product, a dramatic colour gradient, a cropped face.
• Each subsequent swipe reveals more.
• The final tile shows the complete image.

This format reliably increases swipe-through rate, which Instagram's algorithm reads as high engagement. Average swipe-through on reveal carousels outperforms standard carousels by a significant margin.

Add a "swipe to see full image ->" text overlay in your design app on the first tile to prime the viewer.

Wrapping Up

A well-executed panoramic or carousel split post is one of the few techniques that improves both your grid aesthetics and your engagement metrics simultaneously. The key is getting dimensions right and uploading in the correct order.

Start with GridPeek's Image Splitter for a no-friction workflow — upload, choose columns, download tiles numbered in order, and you're ready.