ComfyUI Extension: Inspect Image Overlay

Authored by TK22-26

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Run ComfyUI workflows without the setup

No installs, no CUDA version roulette, no GPU sitting idle on your bill. Bring a workflow and run it in the browser.

ComfyUI node that opens generated images in a fullscreen inspector overlay.

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Custom Nodes (1)

README

ComfyUI Inspect Image Overlay

A ComfyUI custom node that opens the latest rendered image batch in a fullscreen inspector overlay.

It is meant for workflows where you want the visual behavior of inspecting an output asset without having to leave the graph or manually open the output assets panel.

Screenshot

Inspect Image Overlay screenshot

Features

  • Fullscreen image inspector overlay
  • Auto-opens when the node runs, if enabled
  • Updates in place when a new image batch is generated
  • Recent-image navigation for the current browser session
  • Wheel zoom, drag pan, double-click zoom, keyboard shortcuts
  • Optional save-to-output toggle
  • Pass-through IMAGE output so it can sit inline in a workflow

Installation

Clone this repository into your ComfyUI custom_nodes directory:

cd ComfyUI\custom_nodes
git clone https://github.com/TK22-26/comfyui-inspect-image-overlay.git

Restart ComfyUI after installation.

Usage

Add the node:

image > Inspect Image Overlay

Connect an IMAGE input to it and queue the workflow.

The overlay keeps up to 64 recent inspected images per node in the current browser session. New renders open on the newest image, and the arrow controls move through that recent history.

The node passes the input image batch through unchanged, so it can be placed inline before another image node.

Node Options

auto_open

Automatically opens or updates the fullscreen inspector when the node executes.

save_to_output

When disabled, images are written only to ComfyUI temp storage for previewing.

When enabled, the node still uses temp images for the live overlay, and also saves PNG copies to:

output/InspectImageOverlay/

Saved output PNGs include ComfyUI prompt metadata when metadata is enabled.

Controls

  • Mouse wheel: zoom
  • Drag: pan while zoomed
  • Double-click: toggle zoom

Keyboard Hotkeys

  • Esc: close inspector
  • ArrowLeft / ArrowRight: previous or next image
  • + / -: zoom in or out
  • 0: fit image to screen

Notes

  • Preview-only images are stored in ComfyUI temp storage and may be cleaned up by ComfyUI.
  • Recent-image navigation is browser-session state, not permanent history.
  • Enable save_to_output if you want persistent PNG files in the output folder.

License

MIT

Run ComfyUI workflows without the setup

No installs, no CUDA version roulette, no GPU sitting idle on your bill. Bring a workflow and run it in the browser.

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