Nerulio.
All toolsStudioNo upload · processed on this device

Sprite Sheet Slicer

Find alpha-connected frame candidates, review their boxes, and export PNGs.

Drop image files hereProcess many files at once
No upload · processed on this device

Example

Original geometric sample · 96 × 64
Original geometric sample · 96 × 64
Processed sample · 24 × 36
Processed sample · 24 × 36

Example generated with this tool. ZIP tools show their preview; inspect the downloaded archive for every file.

Sprite Sheet Slicer

Find alpha-connected frame candidates, review their boxes, and export PNGs.

How it works

  1. Add images
  2. Adjust settings and review the result
  3. Download a new file

Supported formats

PNG / JPG / WebP / AVIF / HEIC → PNG + JSON (ZIP) — Input decoding depends on browser support and optional engines.

What this tool does

Find alpha-connected frame candidates, review their boxes, and export PNGs.

Implementation and verified quality

advanced · Studio Sprite workspace: measured grid (margin, spacing) or alpha islands, colour key, previewed import decisions; GIF/APNG/.aseprite decoders; timeline, pivots, boxes, alpha contour collision. Quality qualification is in progress. Pro/Flagship quality has not been established.

Before you export

Disconnected parts may become separate candidates. Overlapping characters are not semantically separated.

Frequently asked questions

What are this tool’s limitations?

Disconnected parts may become separate candidates. Overlapping characters are not semantically separated.

Are my files uploaded?

Nerulio processes selected files on your device and has no file-upload API. Optional engines and models are downloaded from third parties; those requests expose connection information such as your IP address.

Will my work be saved automatically?

No. Images and editing state stay in this tab; media output can use local temporary storage. Changing language preserves your work; reloading, closing the tab, or following a link to another page can clear it.