Get Accumulator (images)

Every workflow that generates several images per run eventually needs to collect them into one place - a batch that feeds a comparison, a save node, or a contact sheet. The Kinburg pack's answer is name-based accumulators, and Get Accumulator (images) is the read side: it collects every Set Accumulator (images) node that shares a name and batches their outputs.

The mechanism is the interesting part, because it's refreshingly non-magical. The Get node has a Collect button that physically wires every matching Set's output into it as real links, in index order, and batches them - reusing the pack's Unlim Image Batch under the hood. No runtime globals, no prompt magic; just links ComfyUI executes and caches completely normally. Press Collect again after adding or removing Sets and it rebuilds the links from scratch, skipping any Set that's bypassed or muted.

The inputs that matter:

• name - the accumulator name. Must match the Set Accumulator (images) nodes you're collecting. Press Collect to wire.
• mode - how to reconcile inputs of different sizes: as is (errors on mismatch), crop to smallest, or pad to largest. Same options as Unlim Image Batch.
• pad_color - the border color (HEX) for pad to largest.
• skip_empty - on by default; drops empty or bypassed branches so the batch stays valid.

The output:

• images - a single IMAGE batch, ready for Image Compare (HTML), a save node, or a collage.

The sibling to know about: Get Accumulator (images list) collects from the same Set nodes but returns a ComfyUI image list instead of a batch, so images of different sizes coexist without crop-or-pad. If your branches produce mixed dimensions, use the list version; if they're uniform (or you don't mind reconciling), this batch version is what feeds the compare node most naturally.

The typical shape: several branches - different seeds, samplers, or prompt variants - each ending in a Set Accumulator (images) with the same name, and one Get Accumulator (images) downstream feeding Image Compare. Copying a Set auto-increments its index, so scaling the workflow from two branches to six means copying nodes, not renumbering.

Install via ComfyUI Manager (search "Kinburg-Nodes") or:

cd ComfyUI/custom_nodes
git clone https://github.com/Kinburg/Kinburg-Nodes

then restart. No dependencies beyond the pack - this is batch assembly, nothing heavy. One-author personal collection, per-package docs, 1395 automated checks.