---
title: "Warning Square Icon | Free Download PNG & SVG | Plump Line"
product: "Streamline Icons, Illustrations and Elements"
url: /icons/download/warning-square--25621
canonical_url: "https://www.streamlinehq.com/icons/download/warning-square--25621"
summary: "Rounded line icon of a rounded square containing an exclamation mark. Used for warnings, alerts, and error states."
---

# Warning Square icon

The Warning Square icon shows a rounded square outline containing a centered exclamation mark. Drawn in the Plump Line style on a 48px grid with a 3px stroke, its chunky curves keep the warning clear and friendly. Use it for warning banners, alert dialogs, validation errors, system notices, and caution states. It belongs to Plump Line set in the Plump family.

## Preview

![Rounded line icon of a rounded square containing 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/alerts/warning-square-14g8pmcjhasqcjd69xbn5kq.png/warning-square-tjwwv3gjomft0sjggyw2ic.png?_a=DATAiZkSZAA0)

## Details

- **Name**: Warning Square
- **Type**: Icon
- **Set**: [Plump Line](/icons/plump-line-style.md) — Plump is 100% cute. Inspired by animated cartoons, with subtle curves and chunky shapes. The Line variant features outlines of friendly icons with expressive details.
- **Family**: [Plump](/icons/plump.md) — Friendly icons
- **Style**: Line, Stroke
- **Category**: Interface Essential › Alerts
- **Default size**: 48px
- **Stroke width**: 3px
- **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, danger, attention, hazard, error, notice, square

## Download

- [Download Warning Square on Streamline](https://www.streamlinehq.com/icons/download/warning-square--25621)

## Also available in other styles

- [Warning Square — Plump Flat](/icons/download/warning-square--26137.md) (Pro)
- [Warning Square — Plump Solid](/icons/download/warning-square--25880.md) (Pro)
- [Warning Square — Plump Neon](/icons/download/warning-square--30945.md) (Pro)
- [Warning Square — Plump Pop](/icons/download/warning-square--31828.md) (Pro)
- [Warning Square — Plump Duo](/icons/download/warning-square--25953.md) (Pro)
- [Warning Square — Plump Gradient](/icons/download/warning-square--29800.md) (Pro)
- [Warning Square — Plump Remix](/icons/download/warning-square--30156.md) (Pro)

---

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