What this tool does
Split one picture into 2x2, 3x3 or 4x4 equal tiles for a nine-grid post on social apps: upload nine tiles and viewers can still piece the original back together. The tool crops the image to a square first (the centre square, so landscape and portrait photos are never stretched), then cuts it into tiles of exactly the same size.
Download the tiles one by one, or grab them all as a single ZIP. You can also add a seam between tiles — it is applied evenly around every tile, so the reassembled grid keeps a clean gap instead of blending into one slab. Everything runs in your browser; the image is never uploaded.
How to use
- Pick an image Images with a centred subject work best, because the centre square is taken and the sides are cropped. Crop to a square yourself first if you need a specific corner.
- Choose tile count and seam 3x3 is the usual nine-grid; 2x2 suits a four-tile layout, and 4x4 cuts the picture into small pieces. Start with the thin seam: a few pixels around each tile keeps the assembled grid breathing without shrinking the picture noticeably.
- Post them in numbered order The file names and the badge on each thumbnail carry a number (01…09), in left-to-right, top-to-bottom order. Post them in that order or the reassembled picture will be scrambled.
- Download tiles or the ZIP Click a thumbnail to download that single tile, or use the ZIP button to take them all — the names inside the ZIP match the individual downloads exactly. Change the settings and hit split again; no need to re-pick the image.
FAQ
Why were the sides of my image cropped?
Because the grid is square. The tool takes the centre square: a landscape photo loses its sides, a portrait one loses top and bottom, so every tile is square and the reassembled picture is not distorted. Crop closer to a square first if you want to keep more.
How are tiles numbered — does the order matter?
Left to right, top to bottom: 01 is top-left, 03 is top-right, 09 is bottom-right. You must post them in that order — grids are filled in upload order, so a different order scrambles the picture.
What is the seam, and which setting should I use?
The seam is blank margin around each tile, which shows up as a gap between tiles once reassembled. None is for a seamless rebuild, thin is the safest look, wide gives an obvious grid. The value is scaled against a 750-wide baseline, so the look stays consistent across output sizes.
Which output size should I pick?
1080 is plenty for social apps (360x360 per tile at 3x3, and the platform re-compresses anyway). Choose 1440 or 2048 if you want to print or use it as wallpaper. The total is rounded down to a multiple of the tile count — 2048 with three tiles becomes 2046.
JPG or PNG?
JPG for photos (smaller, and platforms re-compress anyway); PNG for screenshots, memes and flat line art, which stay free of compression noise. JPG is fixed at quality 95, visually close to PNG.
Is my image uploaded?
No. Decoding, cropping, cutting and zipping all happen in your browser — the image never leaves your device, and the ZIP is assembled locally too.
Limits
Inputs: PNG, JPG, JPEG and WebP, up to 50MB each. HEIC (the iPhone default) is not supported yet — export to JPG first.
Only square grids (2x2 / 3x3 / 4x4) are supported. For strips like 1x4 or 3 tall slices, use the image crop tool instead; for cutting video frames, use the frame extractor. No watermark or border is added — the tiles are exactly the cropped picture.