---
title: "Luma Key"
description: "Local-first visual environment for building and running AI workflows. Build agents visually, deploy anywhere, privacy by design."
canonical: https://docs.nodetool.ai/nodes/lib/image/keyer/lumakey
markdown: https://docs.nodetool.ai/nodes/lib/image/keyer/lumakey.md
product: NodeTool
source: https://github.com/nodetool-ai/nodetool/blob/main/docs/nodes/lib/image/keyer/lumakey.md
---

# Luma Key

**Type:** `lib.image.keyer.LumaKey`

**Namespace:** `lib.image.keyer`

## Description

Keep pixels whose luminance falls inside [low, high] with smoothstep edges.
    image, luma key, keying, brightness

## Properties

_(none)_

## Outputs

| Output | Type | Description |
|--------|------|-------------|
| output | `image` |  |

## Related Nodes

Browse other nodes in the [lib.image.keyer](./) namespace.