Instagram Grid Maker (Image Splitter)
One picture, 3 to 15 posts that line up on your 3:4 profile grid.
Grid
Your picture
Drag the picture (or focus it and use the arrow keys) to choose the part that goes on your grid; + and − zoom. Dimmed areas are left out.
On your profile
Posts, in posting order
About the Instagram Grid Maker (Image Splitter)
Turn one picture into a set of posts that show as one large image on your Instagram profile. Choose 1 to 5 rows of three posts, place your picture, and download the posts as a ZIP — each one numbered in the order to post it, because Instagram shows the newest post first.
The profile grid shows tall rectangles instead of squares. The tool makes 3:4 posts (1080 × 1440 px) by default, the tallest photo shape Instagram keeps, so each post fills its tile and nothing is cropped off your profile. If you prefer classic 4:5 posts (1080 × 1350 px), it adds the strip the grid hides on each side from the neighbouring part of your picture, so the grid still lines up. Your picture never leaves your device.
How to use it
- Drop a picture on the box, choose it, or paste it. A large picture gives sharp posts: 3,240 px wide for the three columns and 1,440 px tall for every row of 3:4 posts — 3,240 × 4,320 px for a 3 × 3 grid.
- Choose the number of rows (3 × 1 to 3 × 5) and the post shape — 3:4 is the right one for today’s grid.
- Drag the picture, or use the zoom and position sliders, to choose the part that goes on your grid. The preview on the right shows how your profile will look.
- Download all posts as a ZIP, or one at a time. The file names start with the posting order.
- Post them as separate posts, number 1 first and the last number last, and keep the full shape when Instagram offers to crop.
Examples
9 posts of 1080 × 1440 px, each made from 1,250 px of the photo (a little is trimmed from the left and right so the 9:12 grid fits)
9 posts of 1080 × 1440 px from 1,008 px each — enlarged only 1.07×
3 posts of 1080 × 1440 px from the middle band of the photo (a 9:4 strip)
Common uses
- Launching a campaign or a new collection with one big image across your profile.
- Turning a panorama into a row of three posts.
- Making an event poster or announcement stand out on your grid.
- Planning how a set of posts will line up before you publish them.
Why 3:4 posts
Instagram’s head, Adam Mosseri, switched profile grids from squares to tall rectangles in January 2025 (The Verge). Instagram keeps photos with any shape from 1.91:1 to 3:4 and stores them up to 1080 px wide, so a 3:4 photo is 1080 × 1440 px (Instagram Help Centre). The tool assumes the grid tiles have that same 3:4 shape, so a 3:4 post fills a tile exactly and is the simplest choice for a grid that lines up.
Instagram has not stated the tile shape on a help page that could be checked, so compare the preview with your own profile before you post a whole grid. Older grid tutorials split pictures into squares; on a rectangular grid those posts are shown cropped, and the picture no longer lines up.
Posting order
Your profile shows the newest post at the top left. So post the bottom-right tile first and the top-left tile last: the tool numbers the posts that way (post 1, post 2…) and the file names start with the number. Use full rows (3, 6, 9, 12 or 15 posts) so your older posts shift down by whole rows and stay in line.
If you choose 4:5 posts
A 4:5 post (1080 × 1350) is slightly wider than a grid tile, so the grid shows only its middle 3:4 part — 33.75 px is hidden on each side at 1080 px wide. The tool makes each 4:5 post from its tile plus that strip on both sides, taken from the neighbouring part of the picture, so the grid lines up and the post looks complete in the feed. The dashed line in the editor shows the area the posts use.
Limitations
- The grid has thin gaps between tiles, so a sliver of the picture is hidden where tiles meet; avoid placing fine text across those lines.
- Pinned posts stay at the start of your grid and break the line-up; unpin them while you post, and avoid posting anything else in between.
- If Instagram changes how the grid crops posts, earlier grids may not line up any more.
- Posts are saved as high-quality JPGs (92%) in sRGB, without the photo’s metadata (such as location).
- Pictures up to 100 megapixels. HEIC photos open in Safari directly; other browsers download a HEIC decoder from this site the first time (about 1.4 MB).
Privacy
Everything happens in your browser. What you enter or open here is not uploaded or stored by MySmartCoPilot.
Frequently asked questions
What size should Instagram grid posts be?
For today’s 3:4 grid, 1080 × 1440 px per post. A 3 × 3 grid is then a 3240 × 4320 px picture; one row is 3240 × 1440 px.
In which order do I post the tiles?
Bottom right first, top left last — the tool numbers them in exactly that order, and the file names start with the number.
Why do my old grid posts look cut off?
They were made as squares for the old square grid. The profile now shows tall 3:4 tiles, so square posts are shown with their sides trimmed. Remake the grid with 3:4 posts to line it up again.
Can I post the tiles as one carousel?
Not for a grid: a carousel is one post, so it takes a single tile on your profile. Post each tile as its own post.
Should I choose 3:4 or 4:5?
3:4 — the post and the grid tile are the same shape, so what you see in the preview is exactly what your profile shows. Choose 4:5 only if you want the classic feed size; the grid then shows the middle of each post.
Is my picture uploaded?
No. The picture is split in your browser and the posts are saved straight to your device.