Ephemeral Preview

This is the simplest node in the Checkpoint Handpicker Suite, and it's honest about it. Ephemeral Preview takes one input - image (an IMAGE batch from your sampler or latent-to-image output) - and shows you every image in that batch as a contact sheet. That's the whole job. No outputs, no settings beyond the internal tab wiring. If you're previewing mid-workflow you probably already have a preview node, so the question is what this one adds.

The answer is a label. Because it's part of a suite that tracks which checkpoint the current tab's Cycler is executing, Ephemeral Preview can name the model that produced the images you're looking at: Preview : model.safetensors, with the status icon (👑💛👍✔🗑) next to it if the checkpoint is tagged. It pulls that from tab-local execution state, which is a fancy way of saying "the Cycler just told the tab what it ran, and this node reads it."

That's useful in exactly one scenario: review runs. When you're batch-generating across checkpoints and flipping through outputs, "wait, which model made this one?" is the constant question. The preview answers it inline so you don't have to squint at filenames. If you're not using the Cycler, this node is just a plain batch preview and you can safely keep whatever you already use.

Worth being precise about what it is not: it's display-only. It doesn't tag anything, it doesn't delete anything, and it deliberately does not drop images from the batch - the README calls that out because some preview nodes cull frames to save memory, which makes a checkpoint-review pass lie to you. This one shows everything.

Install is the shared one-pack step - no dependencies, no model downloads:

cd ComfyUI/custom_nodes
git clone https://github.com/ruminar/ComfyUI-CheckpointHandpickerSuite.git

Restart ComfyUI.

Realistic take: it's a utility, not a headline feature - you'd grab it for the checkpoint labeling and the "don't drop batch items" guarantee. If you've already got a preview node you love, the label is the only reason to switch. For the suite's review workflow, it's the natural "what did we just make" window sitting next to the Tagger.