EA Image Compare

Every LoRA test produces the same problem: you've got a "before" and an "after" and you need to actually look at them next to each other. Tabs in your browser don't cut it at 200% zoom, and stacking two PreviewImage nodes makes you scroll. EA Image Compare stitches both images into a single output with a caption bar under each - so one PreviewImage node, one glance, and the difference is obvious.

This is the pack's core comparison node, and the sibling 3-Way and 4-Way variants are literally this node with more image slots. Learn this one and the others are free.

How it works

It takes two IMAGE inputs (image_1, image_2) and two caption strings, then composites everything into one image using PIL: each input gets a caption bar (default 60px tall, 32px font) drawn on top, and the two captioned panels are pasted side by side with a few pixels of spacing between them. The single composited result comes out of the comparison output - wire that to PreviewImage or any save node.

The parameters are all cosmetic but a few earn their keep:

• scale (0.1–2.0) resizes both images proportionally. Crank it below 1.0 to fit a 2K pair on screen; go above 1.0 to pixel-peep. The final composite honors whatever you set, preserving aspect ratio.
• caption_1 / caption_2 default to Without LoRA / With LoRA, which tells you the author's own use case: A/B LoRA testing. Change them to whatever's meaningful to you - weights, prompts, seeds.
• font_size, caption_height, font_color, background_color style the caption bars. There's also an optional font that pulls from your comfyui-kjnodes fonts folder if you have that pack installed; otherwise it falls back to PIL's default bitmap font, which is fine but renders small.

The gotcha that bites everyone

All input images must have identical dimensions - the node raises a ValueError if they don't, and this is the most common error you'll see. Two renders at 1024×576 vs 1024×512 will refuse to compare. Fix it upstream with an image scale/resize node before the compare, or use scale - that only resizes proportionally, so mismatched aspect ratios will still fail. Standardize the size first, then compare.

There's no "export caption text" here - it's a viewing tool. The output is an image, so you can also save it, which is genuinely handy: a single PNG showing your whole A/B test, dropped into a gallery or a Discord post.

Install

Part of the comfyui-ea-nodes pack: ComfyUI Manager → search comfyui-ea-nodes, or git clone https://github.com/ExoticArts/comfyui-ea-nodes into custom_nodes/, then restart and hard-refresh (Ctrl/Cmd+Shift+R). No extra Python dependencies - the pack's requirements.txt is empty and everything it needs ships with ComfyUI.