No. Slice runs entirely in your browser using the HTML canvas. Your image never leaves your device - there is no server, no account, and no upload. You can even use it offline once the page has loaded.

Load the image, switch to Grid mode, and enter the number of columns and rows that match the pack (for example 4 × 4). If the icons have whitespace between them, increase the Gutter and Margin so each crop captures just the icon. Then click Export ZIP to download every icon as its own file.

PNG (with transparency preserved), WebP, and JPG. PNG and WebP keep transparent backgrounds; JPG flattens onto a white background.

Yes. Use Grid mode for uniform sprite sheets and tilesets, set columns and rows (and a gutter if the sheet has spacing), and export. For irregular sheets, use Lines mode to place cut lines exactly where you need them, or Boxes mode to draw individual regions.

Yes. In Grid mode, click Auto-detect grid and it finds the rows and columns by locating the gutters (transparent or solid-colour bands) between icons, then drops the dividers in place so you can still nudge them. Under Export, the Resize option scales every output: Fit keeps each icon’s aspect ratio with a fixed longest side, or Stretch forces an exact width × height - handy for uniform icon sets.

There is no artificial limit - you are bounded only by your device’s memory. Very large images and high cell counts are handled the same way; export simply takes a little longer.

It is completely free. There is no sign-up, no watermark, and no per-export limit.

Because I ran into this exact problem and could not find a reliable tool with custom, resizable, editable rows and columns. So I built one.

I'm Damjan Smickovski, the developer behind IconSlice. damjan-smickovski.dev