MultiPreview combines multiple image outputs into one live preview node. It is useful for monitoring parallel workflow branches without placing a separate Preview Image node on every branch.

Features

Up to 32 dynamic IMAGE inputs (image1, image2, ...)
Displays each input as soon as that branch finishes
Switches between connected inputs with pin buttons
Optional auto_latest toggle to follow the most recently completed input
Batch image navigation with a separate remembered position for each pin
Restores the current preview when switching workflow tabs or views during the same browser session
Includes MultiPreview Auto, a compact variant that always follows the latest input

Installation

Clone or download this repository into the ComfyUI custom nodes directory:

cd ComfyUI/custom_nodes
git clone https://github.com/palealloy2999-prog/comfyUI-multi-preview

Restart ComfyUI, then hard-refresh the browser.

The nodes are available under:

image / MultiPreview
image / MultiPreview Auto

Usage

Connect image outputs from different workflow branches to image1, image2, image3, and so on. A new empty input is added automatically when needed.

Image source A ──▶ image1
Image source B ──▶ image2
Image source C ──▶ image3

Run the workflow as usual. MultiPreview updates when each connected branch completes, without waiting for every other branch.

Click a numbered pin button to show that input.
Turn on auto_latest to switch automatically to the newest completed input.
Use the standard ComfyUI image controls to navigate batches. Each pin remembers its own batch position.

MultiPreview Auto

MultiPreview Auto always displays the most recently completed input. It has no pin buttons or manual selection controls, making it suitable for a compact live preview of parallel branches.

Notes

MultiPreview is a preview/output node and does not provide an IMAGE output.
Preview images and restored UI state are temporary. The preview cache is kept only for the current browser session.
Internal receiver nodes are added automatically at execution time and do not need to be placed manually.
Preview files use ComfyUI's standard temporary image directory. During normal browser execution, each MultiPreview input is saved once by its internal receiver.