ComfyUI ControlNet Auxiliary
All the ControlNet preprocessors in one node pack.
Open Source 6–12 GB VRAM
- Min VRAM
- 6 GB
- GPU class
- Mid GPU
- Quant
- FP16
Actually FreeNo SignupOpen SourceWatermark-Free
ComfyUI Impact Pack
Detection, segmentation, and detailers — the canonical face/hand fix pack.
Open Sourcevia comfyuiRuns locally
Actually FreeNo SignupOpen SourceWatermark-FreeHobbyist-FriendlyPlugin
Requires: ComfyUI
Visit ComfyUI Impact PackUpdated 2026-05-15 · 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 · ComfyUI Impact Pack
What is ComfyUI Impact Pack?
The most-installed node pack on the Comfy Registry. Adds detection (YOLOv8), SAM segmentation, MaskDetailer, FaceDetailer, regional prompting, and the Impact Wildcards system for prompt randomisation. If you've seen a ComfyUI workflow that fixes faces or hands automatically, it's almost certainly using Impact's detailer nodes.
Pros & cons
Pros
- FaceDetailer / MaskDetailer fix the two most common SD failure modes
- YOLOv8 + SAM segmentation in one pack — no separate installs
- Wildcards system for prompt randomisation is excellent
Cons
- Large surface area — 80+ nodes; takes a workflow to fully use
- Some sub-packs (Impact Subpack) need separate install
What's actually free?
GPL, no signup.
✓ Actually FreeNo SignupOpen SourceWatermark-Free
Alternatives
ComfyUI IPAdapter Plus
Reference-image conditioning for ComfyUI.
Open Source 8–12 GB VRAM
- Min VRAM
- 8 GB
- GPU class
- Mid GPU
- Quant
- FP16
Actually FreeNo SignupOpen SourceWatermark-Free
WAS Node Suite
200+ utility nodes — image ops, text logic, file I/O.
Open Sourcevia comfyui
Actually FreeNo SignupOpen SourceWatermark-Free