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Aseprite File Compatibility

Resprite shares many fundamentals with other pixel-art tools, yet file formats differ slightly. This page details the current limitations when working with .aseprite (.ase) projects exported from Aseprite v1.3.4.

Importing .aseprite files​

Resprite R17 introduced native import for .ase bundles. The following features are interpreted with caveats:

  • Overlapping tags are merged. Aseprite allows multiple tags to start on the same frame, but Resprite clips map one-to-one, so only the first tag survives.
  • Ping-pong reverse mode falls back to a standard ping-pong loop.
  • Tag loop counts are ignored because Resprite plays clips indefinitely.
  • Named colours are discarded on import.
  • Indexed Colour Mode differs between the two apps; Resprite converts index-mode images to RGB .
  • User Data, Slice, and Tileset blocks are not recognised and are skipped.
  • Discontinuous linked cels are flattened into standard inheritance chains.
  • Frame durations are rounded to the nearest multiple of the sprite’s base FPS.

Exporting .aseprite files​

When exporting to .ase, Resprite omits attributes the format cannot store:

  • Layer-group blend modes and transparency.
  • Layer clipping masks.
  • Palette slot positions: colours are compacted sequentially.
  • ISO grid settings.
  • Grid attributes if the grid is disabled at export time.
  • The PinLight blend mode, which is substituted with Normal.

Reference: Aseprite file specs.