PCB links for ComfyUI
A PCB link render mode for ComfyUI: orthogonal routed traces instead of splines. The routing core of cable-management, packaged alone.
comfyui-pcb
A fourth link render mode for ComfyUI: PCB. Links draw as orthogonal routed
traces -- out the right side, around nodes, in the left side -- with rounded
corners, lane separation for parallel runs, and ribbon-style bundles between the
same pair of nodes. Pick it in Settings > Lite Graph > Graph > Link Render Mode,
next to Spline and Linear.
That is the entire extension. No nodes, no workflow data, no graph mutations -- remove it and a workflow left in PCB mode simply renders as splines again.
Install
Registry: install comfyui-pcb from ComfyUI-Manager.
Git:
cd ComfyUI/custom_nodes
git clone https://github.com/vtokic/comfyui-pcb
Relationship to cable-management
This is the routing core of comfyui-cable-management, packaged alone. That pack ships the same PCB mode plus the features built on top of it (pass-through pins, comb gates, ribbon gestures, drawers). If it is installed, this extension detects it and stands down -- installing both is safe, cable-management wins.
Notes
- Routes recompute only between gestures; while dragging, core's spline renders and the trace settles on release.
- Reroutes work: a chain reads as one continuous run, entering each reroute from its upstream side.
- Requires a frontend with the modular link renderer (2024+). If the patch points are missing the extension says so once in the console and leaves rendering stock.