ComfyUI Impact Pack
Detection, segmentation, and detailers — the canonical face/hand fix pack.
Open Sourcevia comfyui
Actually FreeNo SignupOpen SourceWatermark-Free
Efficiency Nodes
Collapsible mega-nodes that shrink 20-node workflows to 3.
Open Sourcevia comfyuiRuns locally
Actually FreeNo SignupOpen SourceWatermark-FreeHobbyist-FriendlyPlugin
Requires: ComfyUI
Visit Efficiency NodesUpdated 2026-01-18 · Direct link
Hardware requirements
Runs locally · No GPU
Min VRAM
None
Rec. VRAM
None
Min RAM
8 GB
Rec. RAM
16 GB
Disk
10 GB
GPU class
No GPU
No Apple SiliconGPU Required
Plug-in for ComfyUI — inherits host requirements.
Screenshot placeholder · Efficiency Nodes
What is Efficiency Nodes?
Efficiency Nodes bundle common multi-step operations (load checkpoint + CLIP + VAE + LoRA stack + sampler + decode) into single collapsible nodes. The result: a typical SDXL workflow that's 25 nodes in vanilla Comfy becomes 3-4. Pairs well with the XY Plot node for parameter sweeps.
Pros & cons
Pros
- Dramatically reduces visual complexity of standard workflows
- Built-in XY Plot for comparing samplers / CFG / seeds side-by-side
- Stable, mature, low surface for breakage
Cons
- Hides parameters — harder to learn Comfy fundamentals with it
- Maintenance has slowed compared to Impact / KJ
What's actually free?
GPL.
✓ Actually FreeNo SignupOpen SourceWatermark-Free
Alternatives
WAS Node Suite
200+ utility nodes — image ops, text logic, file I/O.
Open Sourcevia comfyui
Actually FreeNo SignupOpen SourceWatermark-Free