Repaint one small region of a picture, a prop or an accessory, and leave everything else alone. About 27 seconds a pass on our card.
Required models
<ul>
<li>Diffusion model: <a rel="ugc" href="https://civarchive.com/models/958009?modelVersionId=3139241">RedCraft 3.0 Krea 2</a>, the INT8 convrot build, <code>redcraft23_30Krea2_int8_convrot.safetensors</code>, in <code>models/diffusion_models</code>. Plain Krea 2 and Krea 2 Turbo load too; RedCraft is what we tested.</li>
<li>Text encoder: the Qwen3-VL 4B text encoder from the Krea 2 downloads (see <a rel="ugc" href="https://comfyui-wiki.com/en/tutorial/advanced/image/krea/krea-2">the Krea 2 guide on comfyui-wiki.com</a>); we run a community int8 ConvRot build of it (<code>qwen3vl_4b_int8_convrot</code>), and the bf16 or fp8 file works the same. It goes in <code>models/text_encoders</code>, loaded with CLIPLoader type <code>krea2</code>.</li>
<li>VAE: the Qwen-Image VAE, <code>qwen_image_vae.safetensors</code>, in <code>models/vae</code>, from <a rel="ugc" href="https://huggingface.co/Comfy-Org/Qwen-Image_ComfyUI/tree/main/split_files/vae">Comfy-Org on Hugging Face</a>.</li>
</ul>
Settings
<ul>
<li>Steps <code>8</code>. It is a distilled model, more steps do not help.</li>
<li>CFG <code>1.0</code>, sampler <code>er_sde</code>, scheduler <code>simple</code>, denoise <code>0.7</code></li>
<li>Size: 1 megapixel buckets, <code>896x1152</code>, <code>1152x896</code> or <code>1024x1024</code></li>
<li>Negative: a <code>ConditioningZeroOut</code>. At CFG 1.0 a negative prompt does nothing, so the graph does not pretend.</li>
<li>Mask: read from the red channel, white means repaint</li>
</ul>
How to use it
<ul>
<li>Crop a square around the region, about three times its size, and scale it to 1024x1024. Load it as the crop.</li>
<li>Make a black and white mask of the same size, white where the new thing goes.</li>
<li>Describe the crop, as a close view of that region, not the whole picture.</li>
<li>To change a shape, first paint a flat blob of the new object's colour over the masked area, then run at 0.7. To change only colour or material on the same shape, skip the blob.</li>
<li>Denoise 1.0 ignores the mask edge and draws its own object at its own size. Use it only to restyle in place.</li>
<li>Scale the result back and paste it over the original with a feathered edge, so nothing outside the region ever goes through the VAE. Crop and paste-back happen in your image editor; the graph does the repaint.</li>
</ul>
Tips we learned the hard way
<ul>
<li>Density beats brevity. Write a full paragraph: who or what, where, the light, the camera. A short prompt gets you a short picture.</li>
<li>Say what you want, never what you do not. No negative prompt, and no SDXL habits: weight brackets and the old separator keyword do nothing here. Write "alone in the frame, no other people" instead of a negative list.</li>
<li>Name the medium. "Drawn in clean cel-shaded anime line art, drawn rather than photographed" holds a drawing; "semi-realistic" alone drifts to photo.</li>
<li>Stay at 1 MP. The buckets above are what the model was trained around.</li>
</ul>
Tested on ROCm (a 7900 XTX). Core ComfyUI nodes only, so CUDA builds should run it as is.
If this worked for you, a thumbs-up here helps the next person find it.

Krea 2 Region Inpaint: Fix One Object, Keep the Rest

Repaint one small region of a picture, a prop or an accessory, and leave everything else alone. About 27 seconds a pass on our card.
Required models
<ul>
<li>Diffusion model: <a href="https://civitai.red/models/958009?modelVersionId=3139241" rel="ugc">RedCraft 3.0 Krea 2</a>, the INT8 convrot build, <code>redcraft23_30Krea2_int8_convrot.safetensors</code>, in <code>models/diffusion_models</code>. Plain Krea 2 and Krea 2 Turbo load too; RedCraft is what we tested.</li>
<li>Text encoder: the Qwen3-VL 4B text encoder from the Krea 2 downloads (see <a href="https://comfyui-wiki.com/en/tutorial/advanced/image/krea/krea-2" rel="ugc">the Krea 2 guide on comfyui-wiki.com</a>); we run a community int8 ConvRot build of it (<code>qwen3vl_4b_int8_convrot</code>), and the bf16 or fp8 file works the same. It goes in <code>models/text_encoders</code>, loaded with CLIPLoader type <code>krea2</code>.</li>
<li>VAE: the Qwen-Image VAE, <code>qwen_image_vae.safetensors</code>, in <code>models/vae</code>, from <a href="https://huggingface.co/Comfy-Org/Qwen-Image_ComfyUI/tree/main/split_files/vae" rel="ugc">Comfy-Org on Hugging Face</a>.</li>
</ul>
Settings
<ul>
<li>Steps <code>8</code>. It is a distilled model, more steps do not help.</li>
<li>CFG <code>1.0</code>, sampler <code>er_sde</code>, scheduler <code>simple</code>, denoise <code>0.7</code></li>
<li>Size: 1 megapixel buckets, <code>896x1152</code>, <code>1152x896</code> or <code>1024x1024</code></li>
<li>Negative: a <code>ConditioningZeroOut</code>. At CFG 1.0 a negative prompt does nothing, so the graph does not pretend.</li>
<li>Mask: read from the red channel, white means repaint</li>
</ul>
How to use it
<ul>
<li>Crop a square around the region, about three times its size, and scale it to 1024x1024. Load it as the crop.</li>
<li>Make a black and white mask of the same size, white where the new thing goes.</li>
<li>Describe the crop, as a close view of that region, not the whole picture.</li>
<li>To change a shape, first paint a flat blob of the new object's colour over the masked area, then run at 0.7. To change only colour or material on the same shape, skip the blob.</li>
<li>Denoise 1.0 ignores the mask edge and draws its own object at its own size. Use it only to restyle in place.</li>
<li>Scale the result back and paste it over the original with a feathered edge, so nothing outside the region ever goes through the VAE. Crop and paste-back happen in your image editor; the graph does the repaint.</li>
</ul>
Tips we learned the hard way
<ul>
<li>Density beats brevity. Write a full paragraph: who or what, where, the light, the camera. A short prompt gets you a short picture.</li>
<li>Say what you want, never what you do not. No negative prompt, and no SDXL habits: weight brackets and the old separator keyword do nothing here. Write "alone in the frame, no other people" instead of a negative list.</li>
<li>Name the medium. "Drawn in clean cel-shaded anime line art, drawn rather than photographed" holds a drawing; "semi-realistic" alone drifts to photo.</li>
<li>Stay at 1 MP. The buckets above are what the model was trained around.</li>
</ul>
Tested on ROCm (a 7900 XTX). Core ComfyUI nodes only, so CUDA builds should run it as is.

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