Alert Warning Triangle black outline icon
Double-outlined triangle with an exclamation mark and dot, the classic warning sign
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About the Alert Warning Triangle black outline icon
The icon shows a rounded triangle with a double outline containing a centered exclamation mark and dot, the universal caution symbol. It suits error and validation messages, safety and hazard notices, system status alerts and notification banners across apps and dashboards.
The double border adds visual weight so the shape reads clearly as a warning even at small sizes, while the exclamation stays simple and bold. It pairs with notification, danger and shield icons in the library. Use it at 20px+ so the inner and outer triangle lines don't merge.
This is the black outline version of the alert warning triangle icon: even, monoline strokes that stay crisp at small sizes and suit clean, minimal interfaces, wireframes and light backgrounds.
It downloads free as an SVG vector or transparent PNG in seven sizes, and the free online editor lets you recolor it, apply gold, silver, neon and gradient styles, add animation, or convert it to EPS, PDF and DXF.
Free for personal and commercial use with attribution.
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