---
title: "Warning Square Icon | Free Download PNG & SVG | Flex Neon"
product: "Streamline Icons, Illustrations and Elements"
url: /icons/download/warning-square--30396
canonical_url: "https://www.streamlinehq.com/icons/download/warning-square--30396"
summary: "Rounded neon icon of a rounded square outline with an exclamation mark. Used for warnings, alerts, and error states."
---

# Warning Square icon

The Warning Square icon shows a rounded square outline with a centered exclamation mark and is drawn in the Neon style on a 14px grid with a 1px stroke, keeping its curved outline clear at small sizes. Use it for warnings, alerts, error states, validation messages, and notification banners. It belongs to Flex Neon set in the Flex family.

## Preview

![Rounded neon icon of a rounded square outline with an exclamation mark. Used for warnings, alerts, and error states.](https://assets.streamlinehq.com/image/private/w_240,h_240,ar_1/f_auto/v1/icons/flex-neon/interface-essential/alerts/warning-square-v152a5to2cha10syjq14l6.png?_a=DATAiZkSZAA0)

## Details

- **Name**: Warning Square
- **Type**: Icon
- **Set**: [Flex Neon](/icons/flex-neon.md) — Flex is all about the curves. Its smooth curves brings fluidity and dynamism to your designs with a modern appeal. The Neon style is especially effective in complex environments where quick recognition and hierarchy are essential. It also allows you to customize the line thickness. All Flex Neon icons are designed on a 14px grid with a 1px default stroke and two customizable line colors.
- **Family**: [Flex](/icons/flex.md) — Fluid icons
- **Style**: Neon, Stroke
- **Category**: Interface Essential › Alerts
- **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**: warning, alert, caution, exclamation, square, symbol, frame, button, UI, interface, app, control, media, player, pause, wait

## Download

- [Download Warning Square on Streamline](https://www.streamlinehq.com/icons/download/warning-square--30396)

## Also available in other styles

- [Warning Square — Flex Line](/icons/download/warning-square--24510.md) (Pro)
- [Warning Square — Flex Duo](/icons/download/warning-square--24559.md) (Pro)
- [Warning Square — Flex Remix](/icons/download/warning-square--28514.md) (Pro)
- [Warning Square — Flex Gradient](/icons/download/warning-square--27705.md) (Pro)
- [Warning Square — Flex Flat](/icons/download/warning-square--24720.md) (Pro)
- [Warning Square — Flex Pop](/icons/download/warning-square--31279.md) (Pro)
- [Warning Square — Flex Solid](/icons/download/warning-square--24350.md) (Pro)

---

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