Install ComfyUI.
Install ComfyUI-Manager
Look up this extension in ComfyUI-Manager. If you are installing manually, clone this repository under ComfyUI/custom_nodes.
Restart ComfyUI.

Features

PromptPresetSelector node

Inputs

syntax (str), default to {% | %} — defines the opening tag, separator, and closing tag as a single field, space-separated
preset_index (int), 0-based, default to 0 — loops both ways within range
preset_name (combo) — dynamic dropdown, active when preset_names is filled
preset_names (str), optional — comma-separated list of preset names. Ex: neutral, happy, sad. If fewer names than presets, remaining are auto-named (preset_2, preset_3...). If more, extra names are ignored.
text (str), multiline textarea supporting preset blocks
cleanup (bool), default to True

Outputs

text (str) — the formatted text, with preset blocks resolved
preset_index (int) — the selected index
preset_count (int) — the number of presets found across blocks

Usage

Include preset blocks in your text using the syntax defined in the syntax field. Each block holds options separated by the separator. Depending on preset_index, the matching option is injected and the block markers are removed.

This is {% an example | a text | another text %} for {% the PromptPresetSelector | the README | %}

preset_index = 0 → This is an example for the PromptPresetSelector
preset_index = 1 → This is a text for the README
preset_index = 2 → This is another text for

Empty presets are allowed — the block is simply replaced by an empty string.

Custom syntax

The syntax field allows changing the opening tag, separator and closing tag. Format is always open_tag separator close_tag, space-separated.

<< / >>

Would match blocks like << option_a / option_b >>.

Preset names

When preset_names is filled, preset_index is replaced by a dynamic dropdown (preset_name) built from the comma-separated names. The dropdown resets to the first preset when activated.

If fewer names than presets are defined, remaining entries are auto-named (preset_2, preset_3...). If more names than presets, extra names are ignored.

Preset references

Inside a preset, you can reference a previously declared preset using $N (0-based index).

{% base style | $0, hat | $1, jewelry %}

preset_index = 0 → base style
preset_index = 1 → base style, hat
preset_index = 2 → base style, hat, jewelry

References are resolved recursively — $1 in preset 2 resolves preset 1, which may itself reference preset 0.

Rules:

$N can only reference a preset with a lower index (forward references are not allowed)
$N must be within range
Circular references raise an error

Cleanup

When cleanup is enabled, the following are removed from the output:

Spaces before commas
Double or empty commas
Empty lines

Validation

The node runs the following checks and stops the workflow on error:

syntax must contain exactly 3 space-separated parts
open_tag and close_tag must be different
All preset blocks in text must have the same number of options
preset_index must be within range

PromptOptionPicker node

Inputs

options (str) — one option per line. Empty lines are allowed and displayed as -- in the dropdown, with an empty string as value.
selected (combo) — dynamic dropdown built from the options field.

Outputs

value (str) — the selected option, or "" if -- is selected.

Usage

Fill the options field with one option per line. The dropdown updates automatically as you type.

sitting down
standing up
lying down

kneeling

The empty line above produces a -- entry in the dropdown, which outputs an empty string. If the field is empty, the dropdown resets to --.

PromptLayoutFiller node

Inputs

template (str) — multiline text with placeholders. Supports {N} or {N:label} syntax where N is the slot index (0-based) and label is a purely visual annotation.
slot_0 to slot_9 (str, connectable) — values injected into the corresponding placeholders. Slots are revealed one by one as the previous one is connected. Up to 10 slots supported.

Outputs

text (str) — the template with all placeholders resolved.

Usage

Write a template in the text field using placeholders:

character, {0:position}, {1:background}, {2:lighting}

Connect a node (e.g. a PromptOptionPicker) to each slot. The placeholder is replaced by the connected value at execution.

Validation

The node stops the workflow on error if:

The template is empty
A placeholder index exceeds the maximum slot index (9)
A placeholder is used but the corresponding slot is not connected

Typical workflow

[PromptOptionPicker] → slot_0 ┐
[PromptOptionPicker] → slot_1 ├→ [PromptLayoutFiller] → text
[PromptOptionPicker] → slot_2 ┘

Each PromptOptionPicker manages its own list of options independently. Slot lengths do not need to match.

Web

contentEditable editor

Some text widgets are replaced by a contentEditable div that provides syntax highlighting. Supported widgets and nodes:

text widget in PromptPresetSelector
template widget in PromptLayoutFiller

Colors update in real time while editing or changing other widget's values and pasting always inserts plain text, stripping any HTML formatting.

PromptPresetSelector:

Orange: tags and separators
Gray: inactive presets
Blue: $N references on the active preset

PromptLayoutFiller:

Placeholders are highlighted in the editor:

Green: slot is connected
Red: slot is referenced but not connected

Keyboard shortcuts

Shortcut	Action
`Ctrl+Up`	Increase weight of selected text or word under caret by `0.1`. Ex: `tag` → `(tag:1.1)`
`Ctrl+Down`	Decrease weight of selected text or word under caret by `0.1`. Ex: `(tag:1.1)` → `tag` when reaching `1.0`

The selection is preserved after each keypress, consistent with ComfyUI native behavior.

TODO

PromptPResetSelector

Add a field to easily concatenate text at the end of the output
Wildcard mode for presets (randomly selected, index to -1 or -2?)