---
title: "Warning Icon | Free Download PNG & SVG | Atlas Line"
product: "Streamline Icons, Illustrations and Elements"
url: /icons/download/warning--29414
canonical_url: "https://www.streamlinehq.com/icons/download/warning--29414"
summary: "Clean line icon of an octagonal outline with an exclamation mark. Used for warnings, alerts, and error states."
---

# Warning icon

The Warning icon shows an octagonal outline with a centered exclamation mark. Drawn in the line style on a 16px grid with a 1px stroke so it stays clear at small sizes. Use it for warning messages, alerts, validation errors, safety notices, and status indicators. It belongs to Atlas Line free set in the Atlas family.

## Preview

![Clean line icon of an octagonal outline with an exclamation mark. Used for warnings, alerts, and error states.](https://assets.streamlinehq.com/image/private/w_300,h_300,ar_1/f_auto/v1/icons/internet-security/warning-d8i5fl6d5vmo2leq3s7ww.png/warning-iuwdgfdolrdkis9un1637.png?_a=DATAiZkSZAA0)

## Details

- **Name**: Warning
- **Type**: Icon
- **Set**: [Atlas Line](/icons/atlas-line.md) — Atlas is a free and open source icon set created by Vectopus with clean, modern design.
- **Family**: [Atlas](/icons/atlas.md)
- **Style**: Line, Stroke
- **Category**: Internet Security › Internet Security
- **Default size**: 16px
- **Stroke width**: 1px
- **Pricing**: Free
- **License**: [MIT](https://github.com/Vectopus/Atlas-icons-font/blob/main/LICENSE)
- **Author**: [Vectopus](https://atlasicons.vectopus.com/)
- **Formats**: PNG, WEBP, PDF, SVG, JSX
- **Tags**: warning, Stop, caution, octagon, sign, traffic, halt, road, yield, control, regulation, transport

## Download

- [Download Warning on Streamline](https://www.streamlinehq.com/icons/download/warning--29414)

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