Processes a multiline text template by replacing {variable_name} placeholders with dynamically wired input values. Pins can be added, removed, and renamed at any time — the pin name is the variable name.

Category: masslevel/Text

Installation

Clone or download this repository into your ComfyUI/custom_nodes/ directory:

cd ComfyUI/custom_nodes
git clone https://github.com/masslevel/ComfyUI-masslevel-TextProcessing

Restart ComfyUI.

Variable Text Processor — Usage

Basic concept

Write a template with {placeholder} tokens, wire any value into a named pin, and the node outputs the fully resolved string.

Template:
  resolution: {video_width}x{video_height}
  fps: {video_fps}
  model: {model_name}
  cfg: {sampler_cfg}

Wired:
  video_width  → 1920
  video_height → 1080
  video_fps    → 25
  model_name   → "model.safetensors"
  sampler_cfg  → 25.0

Output:
  resolution: 1920x1080
  fps: 25
  model: model.safetensors
  cfg: 25.0

Adding variables

Click the ＋ Add Variable button on the node body. A prompt will ask for a name — use letters, numbers, and underscores only (e.g. fps, model_name, subject). The name becomes the {placeholder} token in your template.

Removing variables

Right-click the node body → Remove Variable Pin → select the variable to remove. Any connected wire is cleanly disconnected first.

Renaming variables

Two methods — both keep the connected wire in place:

Context menu: Right-click the node body → Rename Variable Pin → select the variable and enter a new name.
Native rename: Right-click the connection point on the pin → Rename Slot → enter a new name.

Inputs

Input	Type	Description
`template`	STRING (multiline)	The template text containing `{placeholder}` tokens. Can be typed directly or wired from an external multiline string node.
(dynamic)	STRING / INT / FLOAT	One pin per variable. The pin name must match the `{placeholder}` in the template exactly. INT and FLOAT values are automatically converted to string.

Output

Output	Type	Description
`text`	STRING	The fully resolved template. Unmatched `{placeholders}` with no connected pin are passed through unchanged.

Notes

Variable names and their order persist across workflow save and reload.
Unresolved placeholders are passed through unchanged — they will not error.
The template field itself can be wired from an external multiline text node.

Compatibility

ComfyUI (latest)
Python 3.10+
No additional dependencies required

License

MIT

README.md Unescape Escape

ComfyUI-masslevel-TextProcessing

Nodes

Variable Text Processor (masslevel)