Prompt Splitter

Prompt Splitter takes one big multiline text box and turns it into up to five prompt/negative pairs - prompt1/neg1 through prompt5/neg5 - so you can run variations from a single block of text instead of stacking five separate prompt nodes.

Why you'd reach for it

If you batch prompts - testing five different styles, running a queue of variations, stepping through ideas - you know the pain of duplicating CLIP Text Encode nodes over and over. This node collapses that into one editor: type each prompt on its own line, mark negatives with a neg: prefix, and get clean separate outputs to wire into a KSampler or a switch that cycles through them. It's the "prompt farm" pattern in a single node.

How it works

It splits the input on newlines, strips whitespace, and skips blank lines. Non-neg: lines fill prompt1 through prompt5 in order. Lines starting with neg: (case-insensitive) attach a negative to the current prompt part - if you list multiple neg: lines after one prompt, they get comma-joined into a single negative. A neg: before any prompt exists just logs a warning and is skipped.

Then three post-processing steps apply to all parts:

• prefix_all is prepended to every prompt (with a space).
• postfix_all is appended to every prompt.
• search_string/replace_string do a text replacement across all prompts and negatives, useful for swapping a token across the whole batch.

Empty slots come out as "", never None, so downstream nodes don't choke.

The inputs that matter

• prompts - the multiline editor. One prompt per line; neg: lines attach negatives.
• prefix_all / postfix_all - text added to every prompt part. Leave empty to skip.
• search_string / replace_string - batch find-and-replace over all outputs.

Outputs: prompt1–prompt5 and neg1–neg5. That's the full set - this version caps at five pairs, hard.

Installing it

TinyBee pack: ComfyUI Manager → Install Custom Nodes → search "ComfyUI-TinyBee", install, restart. Manual:

cd ComfyUI/custom_nodes
git clone https://github.com/TinyBeeman/ComfyUI-TinyBee

It's under 🐝TinyBee/Util. No dependencies beyond the stdlib.

Common issues

The five-pair cap is the thing people run into first - a sixth non-neg: line is silently dropped, so if a prompt "disappears" you've hit the limit (the Prompt Splitter (Dynamic) variant goes to 32). And note the neg: prefix is checked against the lowercased line, so NEG: works too, but negative: does not - the syntax is specific. Finally, remember prefix/postfix apply to every part, so if you want different prefixes per part you'll need a different approach.