Image Inpainting

Mask-driven region edits — remove objects, fill gaps, replace masked areas — on RunComfy via the runcomfy CLI. This skill routes to Z-Image Turbo Inpainting when a mask is available, and to instruction-driven edit models when the region must be described in prose.

runcomfy.com · Z-Image Inpainting · CLI docs

Powered by the RunComfy CLI

# 1. Install (see runcomfy-cli skill for details)
npm i -g @runcomfy/cli      # or:  npx -y @runcomfy/cli --version

# 2. Sign in
runcomfy login              # or in CI: export RUNCOMFY_TOKEN=<token>

# 3. Inpaint
runcomfy run tongyi-mai/z-image/turbo/inpainting \
  --input '{"image": "...", "mask_image": "...", "prompt": "..."}' \
  --output-dir ./out

CLI deep dive: runcomfy-cli skill.

Pick the right model

Listed by precision of region targeting (mask-required first, then description-based).

Z-Image Turbo Inpainting — tongyi-mai/z-image/turbo/inpainting (default — mask required)

Dedicated inpainting endpoint with mask, strength, and control-scale. Open-weights, sub-second to a few seconds. Pick for: precise region edits with a binary mask — object removal, watermark cleanup, full-region replacement. Avoid for: edits without a mask — use Nano Banana 2 Edit (description-based).

Z-Image Turbo Inpainting LoRA — tongyi-mai/z-image/turbo/inpainting/lora

Inpainting endpoint with LoRA adapter support — apply a fine-tuned style during inpainting. Pick for: brand-style-locked inpainting (LoRA captures the look, mask defines the region). Avoid for: generic inpainting — use the base inpainting endpoint.

Nano Banana 2 Edit — google/nano-banana-2/edit (description-based fallback)

Identity-preserving edit driven by spatial language ("the watermark in the bottom-right", "the cables overhead"). No mask required. Pick for: when no mask is available and the region can be described. Avoid for: precise pixel-level region edges — use Z-Image Inpainting.

GPT Image 2 Edit — openai/gpt-image-2/edit

Multi-ref edit with layout-precise instructions; honors "remove only the X" directives. Pick for: complex prompt + reference composition where the masked region needs context from other images. Avoid for: simple single-image mask-driven jobs — use Z-Image Inpainting.

FLUX Kontext Pro — blackforestlabs/flux-1-kontext/pro/edit

Single-instruction local edit with maximum preservation of everything else. Pick for: "keep everything except X" style local edits without a mask. Avoid for: explicit mask-driven workflows — use Z-Image Inpainting.

Route 1: Z-Image Turbo Inpainting — default

Model: tongyi-mai/z-image/turbo/inpainting Catalog: Z-Image inpainting

Schema

Invoke

Object removal (low strength):

runcomfy run tongyi-mai/z-image/turbo/inpainting \
  --input '{
    "prompt": "Remove overhead cables; preserve rooflines and sky gradient; thin clean sky.",
    "image": "https://your-cdn.example/street.jpg",
    "mask_image": "https://your-cdn.example/cables-mask.png",
    "strength": 0.5,
    "control_scale": 0.8
  }' \
  --output-dir ./out

Region replacement (high strength):

runcomfy run tongyi-mai/z-image/turbo/inpainting \
  --input '{
    "prompt": "Replace busy backdrop with smooth light gray studio paper; mask background only.",
    "image": "https://your-cdn.example/product.jpg",
    "mask_image": "https://your-cdn.example/bg-mask.png",
    "strength": 0.9
  }' \
  --output-dir ./out

Prompting tips

• A mask URL is required. Grayscale, white = inpaint region, black = preserve. Slight blur on mask edges (1–3 px) blends better than a sharp binary edge.
• Strength by intent:
  • 0.3–0.5 retouching / blemish cleanup
  • 0.6–0.7 object replacement with style match
  • 0.8–1.0 full region replacement
• Name what stays outside the mask in the prompt: "preserve rooflines and sky gradient", "match brick pattern and mortar tone".
• Spatial labels still help even with a mask: "the left shelf", "upper-right quadrant" — disambiguates if the mask covers multiple objects.

Route 2: Description-based fallback (no mask)

When you don't have a mask, use Nano Banana 2 Edit with spatial language. The model identifies the target region from your prompt:

runcomfy run google/nano-banana-2/edit \
  --input '{
    "prompt": "Remove the watermark in the bottom-right corner. Keep everything else exactly as in the input.",
    "image_urls": ["https://your-cdn.example/photo.jpg"]
  }' \
  --output-dir ./out

For richer description-based edit, see image-edit.

Common patterns

Watermark removal

• Mask-driven (Route 1, strength 0.5) if mask available
• Description-based (Route 2) if no mask: "Remove the watermark in the bottom-right corner. Keep everything else exactly."

Background full-swap

• Mask the background → Route 1 with strength: 0.9 and a description of the new background

Object addition into a hole

• Mask the hole + describe the new object → Route 1 with strength: 0.8

Brand-style-locked inpainting

• Use Z-Image Inpainting LoRA variant with a brand-style LoRA trained via /trainer

Complex layout repositioning (move element from X to Y)

• Mask is hard to define cleanly → GPT Image 2 Edit with multi-ref + directional language. See image-edit.

What this skill doesn't do

• Outpainting (extending the canvas beyond the original): see image-outpainting.
• Video inpainting (frame-by-frame mask edits): see video-inpainting.

Browse the full catalog

• best-image-editing-models collection
• Z-Image base + LoRA variants

Mask-creation tools (Photoshop, GIMP, segment-anything models) are upstream of this skill; the CLI consumes a mask URL but doesn't generate one.

Exit codes

Fu