A small, free ComfyUI workflow that cuts a product out of its photo and puts it on a pure #FFFFFF background, ready for marketplaces that require white backgrounds.What's in it<ul><li>4 nodes: Load Image → BiRefNetRMBG (BiRefNet-general, refine foreground on, background #FFFFFF) → Save Image, plus a notes node</li><li>UI and API-format JSON</li><li>A README with install steps, the settings that matter (sensitivity, mask_offset, Alpha for transparent PNG) and sample before/after images</li></ul>Requirements<ul><li>ComfyUI plus the ComfyUI-RMBG custom node (install it with ComfyUI-Manager). The BiRefNet-general model downloads automatically on first run.</li><li>One 1024×1024 image took about 57 s on CPU in my test. On a GPU it uses about 3–5 GB of VRAM and is much faster.</li></ul>Honest limitations<ul><li>It keeps whatever the model thinks is the subject. In my sample, a plant behind the mug was kept too, so crop first if your scene is busy.</li><li>Glass, mesh and fine hair-like edges usually need a manual touch-up.</li></ul>Licence: Free for personal and commercial use. You can share the file unchanged with the credit note kept in, but please don't resell it. BiRefNet (MIT) and ComfyUI-RMBG (GPL-3.0) belong to their authors. Links are in the README.Paid version (optional)The $4 version adds a Real-ESRGAN 2× upscale and a 1600 px marketplace resize, plus a longer guide: <a target="_blank" rel="ugc" href="https://ko-fi.com/s/b016b2fca7">https://ko-fi.com/s/b016b2fca7</a> The $7 pack also includes an ID-photo background swap and an old-photo restore and colorize workflow: <a target="_blank" rel="ugc" href="https://ko-fi.com/s/95d51df2e1">https://ko-fi.com/s/95d51df2e1</a> You don't need either one. The free workflow above does the core cut-out on its own.Disclosure: I'm Lei Sun (Lei Sun Studio). I built and tested this workflow with help from an AI assistant, which also helped write this text. The sample images are a computer-drawn test scene and the workflow's real output.

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