| name | canvas-remove-bg |
| description | Remove the background from a selected Codex-Canvas image and collect a transparent PNG result back onto the canvas. |
Codex-Canvas Remove BG
Use this skill when the user invokes Remove BG from Codex-Canvas or asks to isolate the foreground subject of a selected canvas image.
Behavior
- Treat the selected canvas image as the edit target.
- Preserve only the primary foreground subject, proportions, and visual quality.
- Remove the background only; do not redesign, restyle, crop, or replace the subject.
- Do not preserve or recreate readable text, captions, labels, logos, watermarks, UI text, or decorative typography. The cutout should contain the subject only, without text.
- Use imagegen once to place the foreground subject on a perfectly flat solid
#ff00ff chroma-key background.
- The chroma-key background must be one uniform color with no shadows, gradients, texture, reflections, floor plane, or lighting variation.
- Do not use
#ff00ff anywhere in the subject.
- Keep crisp foreground edges, no cast shadow, no contact shadow, no reflection, and enough padding for reliable alpha conversion.
- Save the generated chroma-key PNG under the Codex-Canvas job output directory.
- Codex-Canvas will remove the chroma key locally using its bundled chroma-key helper with soft matte and despill, verify the RGBA alpha PNG, collect it, and place it in a row to the right of the source image.
Do not ask follow-up questions from a background Remove BG job. Make the most reasonable subject isolation from the selected image.
