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9-slice grid / rounded border

Slice an image into equal 2×2 to 5×5 tiles, download as ZIP; also batch-apply rounded corners, borders, padding and shadows.

Images never leave this device.Slicing, rounded corners, borders, and ZIP packaging all happen locally in your browser — no network, no uploads, no size limits.

9-slice grid

Drag images here or click to choose
Multi-select supported · each image is sliced once with the same parameter set · JPG / PNG / WebP / GIF / BMP
Pixel-perfect cuts.When the size doesn't divide evenly, use Math.round Remaining pixels are distributed: tiles differ by at most 1px, and the tile widths/ heights sum exactly to the original, so no edge row or column is dropped.
About spacing.Spacing is added to the right and bottom of each slice, filled with a uniform background color, so each exported tile's size = Tile size + spacing. When spacing is 0, each slice is cut straight from the pixels, so reassembling the nine slices matches the original exactly.

Rounded border

Drag images here or click to choose
Multi-select · apply the same corner / border settings to a batch · outputs PNG
Radius based onHalf the short sidecapped, never exceeding the image itself; in percent mode 50% that is half of the short side (a square image becomes a perfect circle).
Padding is the space between image and border, filled with the background color; shadows add extra room around the edges, so output is larger than the original.
Output is fixed to PNG, preserving the transparency of rounded corners and shadows.

How to use

  1. Drop in a square (or near-square) image
  2. Pick 3×3 or a custom grid; add corner radius, border or shadow
  3. Slice and download everything as a ZIP

FAQ

Does slicing lose pixels?
No. Remainders are distributed evenly (max 1 px difference) so the slices add up exactly to the original size.

Can I make an Instagram-style grid?
Yes — 3×3 is the classic grid; add borders or rounded corners as needed.

Everything runs locally in your browser — files are never uploaded. BoxKit VIP unlocks unlimited use of all 29 tools.