---
title: "Lightbulb Icon | Free Download PNG & SVG | Flex Duo"
product: "Streamline Icons, Illustrations and Elements"
url: /icons/download/lightbulb--24539
canonical_url: "https://www.streamlinehq.com/icons/download/lightbulb--24539"
summary: "Rounded duotone icon of a lightbulb with a U-shaped filament and base. Used for ideas, tips, and innovation."
---

# Lightbulb icon

The Lightbulb icon shows a rounded bulb outline with a U-shaped filament and a short base. Drawn in the duotone style on a 14px grid with a 1px stroke for smooth curves and clear small-size rendering. Use it for ideas, tips, innovation, inspiration, and lighting controls. It belongs to Flex Duo set in the Flex family.

## Preview

![Rounded duotone icon of a lightbulb with a U-shaped filament and base. Used for ideas, tips, and innovation.](https://assets.streamlinehq.com/image/private/w_240,h_240,ar_1/f_auto/v1/icons/lighting/lightbulb-3apojl88ycraa7kq6yhkis.png/lightbulb-0waqha89jvgl302sg7nkc44.png?_a=DATAiZkSZAA0)

## Details

- **Name**: Lightbulb
- **Type**: Icon
- **Set**: [Flex Duo](/icons/flex-duo.md) — Flex is all about the curves. Its smooth curves brings fluidity and dynamism to your designs with a modern appeal. The Duo style is perfect for projects that require differentiation between actions, using color to convey meaning effectively. It also allows you to customize the line thickness. All Flex Duo icons are designed on a 14px grid with a 1px default stroke and two customizable colors.
- **Family**: [Flex](/icons/flex.md) — Fluid icons
- **Style**: Duo, Filled, Stroke
- **Category**: Interface Essential › Lighting
- **Default size**: 14px
- **Stroke width**: 1px
- **Pricing**: Pro
- **License**: [Commercial](https://home.streamlinehq.com/license-premium)
- **Author**: [Streamline](https://home.streamlinehq.com/)
- **Formats**: PNG, WEBP, PDF, SVG, JSX
- **Tags**: lightbulb, bulb, light, idea, inspiration, creativity, thought, brainstorming, innovation, electricity, invention, energy, lighting, incandescent, bright, solution, concept, design, vision, strategy

## Download

- [Download Lightbulb on Streamline](https://www.streamlinehq.com/icons/download/lightbulb--24539)

## Also available in other styles

- [Lightbulb — Flex Line](/icons/download/lightbulb--24490.md) (Pro)
- [Lightbulb — Flex Remix](/icons/download/lightbulb--28537.md) (Pro)
- [Lightbulb — Flex Gradient](/icons/download/lightbulb--27692.md) (Pro)
- [Lightbulb — Flex Flat](/icons/download/lightbulb--24700.md) (Pro)
- [Lightbulb — Flex Neon](/icons/download/lightbulb--30414.md) (Pro)
- [Lightbulb — Flex Pop](/icons/download/lightbulb--31293.md) (Pro)
- [Lightbulb — Flex Solid](/icons/download/lightbulb--24330.md) (Pro)

---

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