Loading Images

Kromacut starts with one image. You can use your own image or the built-in TD test image.

Choose A Source

Use any normal image file Kromacut can open in the web app or standalone desktop build. The preview toolbar includes a file upload button, and the preview area accepts drag and drop while you are in 2D mode.

The header also includes Load TD Test. It loads a small bundled image for experimenting with Transmission Distance and layer ordering.

TD test image

Preview Controls

The 2D preview is intentionally pixel-crisp so the reduced image shows exact color regions.

  • Scroll to zoom in or out.
  • Drag the image to pan.
  • Use Undo and Redo after image edits such as crop, adjustment bake, dedither, quantize, swatch changes, or clear.
  • Use Toggle checkerboard when transparent pixels are hard to see.
  • Use Download image to save the current 2D result as an image.

Crop The Image

Click Crop to enter crop mode. Drag the crop rectangle or its handles, then click Save crop. Use Cancel crop if you do not want to keep the selection.

Cropping is useful before color reduction because it removes background areas that would otherwise influence the palette.

Resize The Image

Use Resize Image to reduce the source image resolution by percentage. This changes the actual pixel dimensions of the current image, so a 1000x800 image resized to 50% becomes 500x400 pixels.

Resizing is useful when the source image is much larger than the physical detail you want to print. Smaller images build faster, produce lighter 3D models, and make each pixel's physical size easier to reason about before reducing colors.

Remove Or Replace An Image

Use Remove image to clear the current image. To replace it, choose another file or drag a new image into the preview.

Tips

  • Start with the cleanest image you can. Heavy compression, tiny details, and noisy backgrounds usually become extra color regions.
  • Crop first, resize if needed, then adjust and reduce colors.
  • Transparent border pixels are not useful for the 3D model. Keep only the visible subject area you want printed.

Next: Reducing colors.