ComfyUI splits image generation into modules: model loading, conditioning, sampling and post-processing, wired into a graph. Every parameter is visible, a pipeline saved to a file reproduces the same result, and workflows shared by others load directly. It runs on your own machine, so a weak GPU is painful, and the first environment and model setup takes time. For people willing to tinker and needing repeatable results. If you only want an occasional image, an online product is easier.
What it does
- Node canvas for regional control, chained models and staged upscaling
- Save workflows to a file or load community templates
- Load different model weights and extensions, with community additions
- Parameters live in the file, so an image can be reproduced
- Batch queue for a set of inputs at once
Who it is for
- Dozens of consistent product images or portraits need a repeatable pipeline
- Line art, depth maps or pose references must feed the generation chain
- The machine has a GPU and assets should stay local
- Someone else's workflow file must run as-is
How to get started
- Install the desktop build first; it avoids more setup traps than a manual environment
- Run an existing workflow, then inspect each node to see what it does
- Change one parameter at a time and save the working version with a note
