> ## Documentation Index
> Fetch the complete documentation index at: https://docs.comfy.org/llms.txt
> Use this file to discover all available pages before exploring further.

# PerpNegGuider - ComfyUI Built-in Node Documentation

> Complete documentation for the PerpNegGuider node in ComfyUI. Learn its inputs, outputs, parameters and usage.

> This documentation was AI-generated. If you find any errors or have suggestions for improvement, please feel free to contribute! [Edit on GitHub](https://github.com/Comfy-Org/embedded-docs/blob/main/comfyui_embedded_docs/docs/PerpNegGuider/en.md)

The PerpNegGuider node creates a guidance system for controlling image generation using perpendicular negative conditioning. It takes positive, negative, and empty conditioning inputs and applies a specialized guidance algorithm to steer the generation process. This node is designed for testing purposes and provides fine control over the guidance strength and negative scaling.

## Inputs

| Parameter            | Data Type    | Required | Range       | Description                                                                                                             |
| -------------------- | ------------ | -------- | ----------- | ----------------------------------------------------------------------------------------------------------------------- |
| `model`              | MODEL        | Yes      | -           | The model to use for guidance generation                                                                                |
| `positive`           | CONDITIONING | Yes      | -           | The positive conditioning that guides the generation toward desired content                                             |
| `negative`           | CONDITIONING | Yes      | -           | The negative conditioning that guides the generation away from unwanted content                                         |
| `empty_conditioning` | CONDITIONING | Yes      | -           | The empty or neutral conditioning used as a baseline reference                                                          |
| `cfg`                | FLOAT        | No       | 0.0 - 100.0 | The classifier-free guidance scale that controls how strongly the conditioning influences the generation (default: 8.0) |
| `neg_scale`          | FLOAT        | No       | 0.0 - 100.0 | The negative scaling factor that adjusts the strength of negative conditioning (default: 1.0)                           |

## Outputs

| Output Name | Data Type | Description                                                           |
| ----------- | --------- | --------------------------------------------------------------------- |
| `guider`    | GUIDER    | A configured guidance system ready for use in the generation pipeline |