---
title: "Lightbulb Icon | Free Download PNG & SVG | Flex Line - Free"
product: "Streamline Icons, Illustrations and Elements"
url: /icons/download/lightbulb--26801
canonical_url: "https://www.streamlinehq.com/icons/download/lightbulb--26801"
summary: "Rounded line icon of a lightbulb outline with a short horizontal base mark. Used for ideas, tips, and innovation."
---

# Lightbulb icon

The Lightbulb icon shows a rounded bulb outline with a short horizontal base mark beneath it. Drawn in the line style on a 14px grid with a 1px stroke, its open spacing keeps the organic curves clear. Use it for idea prompts, tips, innovation features, and creative dashboards. It belongs to Flex Line - Free set in the Flex family.

## Preview

![Rounded line icon of a lightbulb outline with a short horizontal base mark. Used for ideas, tips, and innovation.](https://assets.streamlinehq.com/image/private/w_300,h_300,ar_1/f_auto/v1/icons/interface-essential/lightbulb-zzhoqb7zfcgv45staxbru.png/lightbulb-9w3ovwsftav5jmyfmc5ieh.png?_a=DATAiZkSZAA0)

## Details

- **Name**: Lightbulb
- **Type**: Icon
- **Set**: [Flex Line - Free](/icons/flex-line-free.md) — [Free + Open-source] Flex is a fluid icon family inspired by nature's curves. The Free Line variant features elegant strokes with organic curves. Licensed under the Creative Commons - CC BY 4.0
- **Family**: [Flex](/icons/flex.md) — Fluid icons
- **Style**: Line
- **Category**: Interface Essential › Interface Essential
- **Default size**: 14px
- **Stroke width**: 1px
- **Pricing**: Free
- **License**: [Free](https://home.streamlinehq.com/license-free)
- **Author**: [Streamline](https://home.streamlinehq.com/)
- **Formats**: PNG, WEBP, PDF, SVG, JSX
- **Tags**: lightbulb, bulb, light, lighting, idea, inspiration, creativity, thought, brainstorming, innovation, invention, electricity, incandescent, energy, lights

## Download

- [Download Lightbulb on Streamline](https://www.streamlinehq.com/icons/download/lightbulb--26801)

## Also available in other styles

- [Lightbulb — Flex Duo - Free](/icons/download/lightbulb--26837.md) (Free)
- [Lightbulb — Flex Flat - Free](/icons/download/lightbulb--26854.md) (Free)
- [Lightbulb — Flex Neon - Free](/icons/download/lightbulb--31955.md) (Free)
- [Lightbulb — Flex Gradient - Free](/icons/download/lightbulb--29611.md) (Free)
- [Lightbulb — Flex Remix - Free](/icons/download/lightbulb--29613.md) (Free)
- [Lightbulb — Flex Pop - Free](/icons/download/lightbulb--31939.md) (Free)
- [Lightbulb — Flex Solid - Free](/icons/download/lightbulb--26818.md) (Free)

---

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