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BloodwolfbandClaude Opus 5.5 74f88e177a Add From Image mode to Hot Resolution Mode Switch (0.2.0)

A third mode that outputs the size of an image plugged into a new
optional image input, replacing the separate Get Image Size node that
otherwise sits next to the switch. The input is lazy, so whatever feeds
it only runs in From Image mode. It's always visible rather than hidden
by mode, since hiding a socket would drop its wire on every mode flip.
Errors clearly if From Image is selected with nothing connected.

The new input is declared last and is a socket, not a widget, so it
takes no widgets_values slot - existing saved workflows load unchanged.

Also fixes check_lazy_status in both nodes. The executor passes a
wired-but-pending lazy input as None but omits an unwired one entirely,
and requesting an unwired input raises an unhelpful NodeInputError. Hot
Lazy Switch requested the selected slot whether or not it was wired, so
selecting an empty slot never reached its own clear "not connected"
message. Both nodes now only request inputs that are actually wired.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

2026-10-04 01:37:34 -05:00

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ComfyUI-HotSwitches

I kept doing the same annoying thing in ComfyUI: wanting to try a different model's variations or a different model altogether, or a different resolution, and ending up either rewiring a tangle of noodles or keeping five slightly-different copies of the same workflow around just so I could run A/B tests on something. These two nodes exist so I could stop doing that. Pick from a dropdown, keep working.

Nodes

Hot Lazy Switch

Plug in up to 10 things of any type - models, images, conditioning, whatever

give each one a name, and pick which one feeds downstream from a single dropdown. The unpicked branches don't just get ignored, they don't run at all, so you're not paying the load/compute cost for every option every time, only the one you're actually using.

Sockets show up one at a time as you connect them, so the node isn't a wall of ten empty inputs on day one. Unplug something and its socket stays put rather than shuffling everything below it around.

The selector is a dropdown rather than a raw index, so promoting it into a subgraph input still shows real names to pick from instead of a bare number:

The index selector promoted to a subgraph input, showing a filterable dropdown of real names

Hot Resolution Mode Switch

For when you want the convenience of an aspect-ratio + megapixel resolution picker most of the time, but still want to drop in exact numbers sometimes - or just match the size of an image you already have. One dropdown flips the node between:

Resolution Selector - pick an aspect ratio and a target megapixel count, it does the math (same formula as ComfyUI's own built-in Resolution Selector node).
Manual Resolution - just type the width and height yourself.
From Image - plug an image into the image input and it outputs that image's width and height. Saves you a separate Get Image Size node.

Only the controls for whichever mode you're in are shown, so the node isn't cluttered with fields you're not using. The image input is lazy, too: whatever feeds it (a loader, a scaler, a whole chain) only runs when you're actually in From Image mode.

Installation

Via ComfyUI-Manager: open Manager -> Install via Git URL -> paste https://github.com/Bloodwolfb/ComfyUI-HotSwitches.git -> restart ComfyUI.

Manually: clone into your ComfyUI custom_nodes folder and restart:

cd ComfyUI/custom_nodes
git clone https://github.com/Bloodwolfb/ComfyUI-HotSwitches.git

No extra Python dependencies required.

Example Workflow

examples/hot_switches_demo.json has both nodes wired up and annotated with notes explaining what to do with them - drag it straight into ComfyUI (or Workflow -> Open) to see them working live. It uses plain Text nodes as stand-ins for whatever you'd actually switch between, so it opens and runs for anyone regardless of what models they have installed, and it shows Hot Lazy Switch both plain and promoted into a subgraph (the way it's meant to be used).

Requirements

Both nodes use ComfyUI's V3 node schema (comfy_api.latest.io), so they need a reasonably current ComfyUI build that ships that API.

License

MIT - see LICENSE. TLDR version: do whatever you want with this - use it, modify it, ship it in something you sell - just keep it credited to me, Brad Girman, as the original author. That's the actual legal requirement (not just the license file along for the ride), it's just easy to miss buried in license jargon.

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