Added:

- Transparency-aware tracing: PNGs with transparent backgrounds no longer get their transparent areas read as solid black ink. Transparency is now correctly treated as background in both Single Image and Batch Folder modes.

- Invert Trace toggle (Single and Batch): swaps ink/background. Useful for line art or shapes that come out backwards, e.g. light-colored artwork, or lines on a dark opaque canvas.

- Alpha as Silhouette toggle (Single and Batch): ignores the artwork's color entirely and uses the alpha channel alone to define the shape. Needed for solid-color artwork (e.g. a plain white icon) where the ink color would otherwise blend into the white background used for compositing and lose all contrast.

- Live preview now matches the real trace result 1:1, including transparency handling and both new toggles.

 

Fixed:

- Fixed transparent PNG areas being incorrectly traced as solid ink.

- Fixed white/light vector artwork on transparent backgrounds tracing inverted (background selected instead of the shape).