---
title: "Warning Square Icon | Free Download PNG & SVG | Flex Line"
product: "Streamline Icons, Illustrations and Elements"
url: /icons/download/warning-square--24510
canonical_url: "https://www.streamlinehq.com/icons/download/warning-square--24510"
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 Flex Line style on a 14px grid with a 1px stroke so its flowing curves stay clear at small sizes. Use it for warning messages, alert banners, validation errors, and caution indicators. It belongs to Flex Line set in the Flex 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-vkn5aibg1ijjuyqjc3szii.png/warning-square-xoovq5xyvilq9efos06v7.png?_a=DATAiZkSZAA0)

## Details

- **Name**: Warning Square
- **Type**: Icon
- **Set**: [Flex Line](/icons/flex-line.md) — Flex is a fluid icon family inspired by nature's curves. It replaces rigid geometry with smooth, flowing forms. The Line variant features elegant strokes with organic curves.
- **Family**: [Flex](/icons/flex.md) — Fluid icons
- **Style**: Line, 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--24510)

## Also available in other styles

- [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 Neon](/icons/download/warning-square--30396.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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