IC-Light: Image Relighting Models for ComfyUI

IC-Light by lllyasviel

Image EditingRelightingOpen Source

Image relighting model series by lllyasviel (author of ControlNet). V1 ships as three open SD 1.5 checkpoints that re-render lighting from a prompt; V2 moves to FLUX with foreground conditioning and is reachable through the official online demo.

Hugging Face (V1 weights)GitHub V2 online demo

Developer	lllyasviel
Release Date	2024-05 (V1), 2024-10 (V2 preview)
Architecture	SD 1.5-based (V1), FLUX-based (V2)
License	OpenRAIL-M (V1 weights), non-commercial (V2)
Capabilities	Relighting, foreground conditioning, background replacement

Overview

IC-Light relights a photo without changing what is in it. You give a text prompt (optionally with an environment map) describing the desired light, and the model re-renders the scene so the subject is lit that way. The foreground-conditioned variants keep the subject pixels intact and only move the light, which is what makes the output usable for compositing.

V1 checkpoints

V1 is built on SD 1.5 and ships three weights, all on Hugging Face:

Checkpoint	Conditioning	Notes
`iclight_sd15_fc.safetensors`	Text + foreground	Default model; an initial latent can also steer the relighting
`iclight_sd15_fcon.safetensors`	Text + foreground	Same as `fc` but trained with offset noise; slightly weaker in the author's user study
`iclight_sd15_fbc.safetensors`	Text + foreground + background	The background is conditioned too, so the whole scene follows the prompt

IC-Light V2

V2 rebuilds the model on FLUX and adds a 16-channel VAE plus native high-resolution processing, so it keeps detail on stylised inputs such as oil paintings and anime. Only the foreground-conditional model is usable so far, and it is served through the official Hugging Face Space: the V2 weights themselves are not open, so there is no checkpoint to download or run locally. V2 output is licensed for non-commercial use only.

ComfyUI integration

For V1, install kijai/ComfyUI-IC-Light, which provides the IC-Light nodes and example workflows, then place the checkpoint in models/checkpoints. For V2, the workflow is the online demo described in the IC-Light V2 tutorial.

License

V1 weights are released under CreativeML OpenRAIL-M. The original V1 examples use BRIA RMBG 1.4 for background removal, which is non-commercial: swap it for something like BiRefNet if you use IC-Light commercially. IC-Light V2 is for non-commercial use only.