PNG ICO ICNS MORE
Dropline Neu!
Alert, wrong, warning
Crimson
128x128
Simplicio
wrong, Error, notification
Fugue
Alert, valentine, wrong
16x16
Signs & symbols
Smooth
Super Mono Basic
exclamation, Basic, frame
48x48
Basic, exclamation, Circle
PNG ICO MORE
Shopping & e-commerce
Super Mono Reflection
red, exclamation, Circle
64x64
PNG MORE
UI
Pixel
Sketchdock Ecommerce Icons
triangle, exclamation, Alert
24x24
Fugue Icons
Heart, exclamation