---
title: "Underline Icon | Free Download PNG & SVG | Heroicons Solid"
product: "Streamline Icons, Illustrations and Elements"
url: /icons/download/underline--29181
canonical_url: "https://www.streamlinehq.com/icons/download/underline--29181"
summary: "Minimal solid icon of a U-shaped curved line above a horizontal bar. Used for text underlining and formatting controls."
---

# Underline icon

The Underline icon shows a thick U-shaped line above a rounded horizontal bar. Drawn in the solid style on a 16px grid for a clean, bold interface look. Use it for text editors, typography toolbars, rich-text formatting, and underline controls. It belongs to Heroicons Solid free set in the Heroicons family.

## Preview

![Minimal solid icon of a U-shaped curved line above a horizontal bar. Used for text underlining and formatting controls.](https://assets.streamlinehq.com/image/private/w_300,h_300,ar_1/f_auto/v1/icons/all-icons/underline-r2u3t6e46unuoeuk62zw0c.png/underline-dkl0veu0cvakvq31xo5kg.png?_a=DATAiZkSZAA0)

## Details

- **Name**: Underline
- **Type**: Icon
- **Set**: [Heroicons Solid](/icons/heroicons-solid.md) — Heroicons is a free and open source icon set created by Tailwind Labs.
- **Family**: [Heroicons](/icons/heroicons.md)
- **Style**: Solid, Minimal, Bold, Glyph
- **Category**: All Icons › All Icons
- **Default size**: 24px
- **Pricing**: Free
- **License**: [MIT](https://github.com/tailwindlabs/heroicons/blob/master/LICENSE)
- **Author**: [Heroicons](https://heroicons.com/)
- **Formats**: PNG, WEBP, PDF, SVG, JSX
- **Tags**: underline, text, formatting, typography, design

## Download

- [Download Underline on Streamline](https://www.streamlinehq.com/icons/download/underline--29181)

## Also available in other styles

- [Underline — Heroicons Outline](/icons/download/underline--29180.md) (Free)
- [Underline — Heroicons Micro](/icons/download/underline--33262.md) (Free)
- [Underline — Heroicons Mini](/icons/download/underline--33261.md) (Free)

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