---
title: "Starglow"
slug: "starglow"
tags: ["Special Effects"]
updated: 2025-10-15T07:06:54Z
published: 2025-10-15T07:06:54Z
---

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

# Starglow

**Special Effects/Starglow**

The **Starglow** operator adds a glowing star effect to the brightest parts of a frame. It makes highlights sparkle and shine, giving the impression of light reflecting or shimmering. This can be used to bring extra emphasis to bright spots, add a cinematic glow, or make reflections more eye-catching.

![](https://cdn.document360.io/94808959-fd66-406c-ab5e-4691ce952a14/Images/Documentation/image-1757939525382.png)

### Options

- **Luminance threshold** - Sets the luminance level required for areas to glow.
- **Softness** - Controls how far the glow spreads around bright areas. Higher values create a softer glow.
- **Boost** - Adjusts the intensity of the glow.
- **Opacity** - Controls the transparency of the starglow layer. Range: 0–100. At 0, only the glowing areas are visible; at 100, the glow blends fully with the frame.

### Length

- **Streak length** - Sets the maximum length of all starglow streaks.
- **Up length** - Sets the length of the upper streak.
- **Down length** - Sets the length of the bottom streak.
- **Left Length** - Sets the length of the left streak.
- **Right length** - Sets the length of the right streak.
- **Up left length** - Sets the length of the upper left streak.
- **Up right length** - Sets the length of the upper right streak.
- **Down left length** - Sets the length of the bottom left streak.
- **Down right length** - Sets the length of the bottom right streak.

TipThis operator often requires some experimentation with its settings to achieve the desired effect.