Sprite Sheet Maker

A spritesheet maker does more than glue images into a row. Strips are easy to produce and miserable to import: the moment one frame is a different height, a naive loader slices it wrong. This tool lets you define a real grid — rows, columns, cell size, and padding — and then writes a manifest that records each frame as an absolute rectangle.

That distinction matters when your animation states have different footprints. An idle might be 32×32 while a lunge is 48×32; a fixed-width strip forces you to pad everything to the largest frame and waste atlas space. With explicit rectangles you pack tight and still let the engine find each frame exactly.

Everything runs on the canvas in your browser. You can see the packed preview before you commit, swap two frames by reordering the list, and re-export without a round trip to a server. For a tool you might use a dozen times per sprite, staying local is faster and keeps unfinished art private.

Most mistakes in a sprite sheet come from the grid, not the art. Someone eyeballs a 6×4 layout on a 250-pixel-tall image and ends up with a half-pixel seam that shows up as a shimmer line in motion. This sprite sheet creator computes the cells from numbers you control, so the maths is consistent across every frame and every export.

The manifest doubles as documentation for the next person on the project. It names each frame, states its position and size, and can carry a per-state fps and loop flag. When a new teammate opens the atlas, they are not reverse-engineering your layout from a screenshot.

Because the PNG and the JSON are generated together, editing one frame later does not require re-cutting the sheet by hand. Replace the source image, re-pack, and the rectangles update with it. That keeps the art and the descriptor in agreement instead of letting them drift apart over a long production.

If you work with Liberated Pixel Cup assets, you already know the layout expectations: fixed cell sizes, a canonical row order for walk and slash animations, and consistent anchoring so a character stands at the right height. An lpc sprite generator workflow lives or dies on matching those conventions exactly.

This maker lets you set the cell size that LPC sheets use and order rows to match the standard directions and actions. The manifest then records those rectangles so a loader can map them to the right animation without a bespoke parser. You can combine LPC-format parts with frames you drew yourself, as long as the cell size and baseline agree.

Compatibility is a settings problem, not a code problem. Once the grid and row order are pinned, the same export drops into an LPC-compatible engine, a custom loader, or a prototyping tool. Keep the settings as a preset and every character in the project stays consistent.

You do not need an account to use this sprite sheet generator. The packing, ordering, and export are client-side, so the tool works offline once loaded and never uploads your frames. That is a deliberate choice: source art is often unfinished, and nobody wants a half-drawn character sitting on someone else's server.

When you are ready for the AI layer — generating a new character, expanding a single pose into a full walk cycle, or converting a video into frames — those steps run server-side and spend credits. But the free maker stays free and stays local, and its output uses the same manifest contract as the paid path, so you can mix results from both without conversion.