Enable Zip Output

Let's be honest about this node up front: Enable Zip Output has no inputs, no outputs, and executes a no-op. Its entire function body returns an empty tuple. If you delete it from a workflow, nothing visibly breaks. So what is it, and why does it exist?

It's a flag. Comfy-Pack (BentoML's workflow-packaging toolkit for ComfyUI) uses nodes like this as markers in the graph - their presence is the signal, not their execution. Think of it as a config switch that the pack's tooling and templates read, rather than something that moves data around like a normal node. The name is the clue: it's meant to represent "zip output mode" for a workflow, complementing the actual Zip Output(img + txt file) node that does the real packaging work.

Where you'll actually meet it

Two scenarios. Either you loaded a Comfy-Pack example workflow or template and this node is sitting there unconnected, or a friend who's deeper into the pack left it in a workflow they shared. In both cases the correct response is to leave it alone. It's not hurting anything - it's just furniture.

The honest read: this is a placeholder with a roadmap-shaped hole in it. Comfy-Pack is under active development (BentoML's team maintains it, and it's still young - its r/comfyui launch post was late 2024, and community chatter about the pack itself is thin). A "switch" node with no behavior is exactly the kind of thing a project ships early and wires up later. It may eventually gate or trigger zip-based output in the pack's serve/package flows; today it's inert.

Install

It comes with the pack, so the pack install is the install:

• ComfyUI Manager: search comfy-pack, Install, restart, refresh.
• Manual: cd ComfyUI/custom_nodes && git clone https://github.com/bentoml/comfy-pack, restart.

Troubleshooting (there isn't any)

Since the node does nothing, there's not much to troubleshoot. If you were expecting it to enable something and nothing happened, that's expected behavior, not a bug. The node you probably actually wanted is Zip Output(img + txt file) - that one takes images and text and writes a real .zip. Don't confuse the two: one is a marker, the other is a file factory. This page just describes the marker.