PNG SVG PSD EPS MORE
Signs
Flat
Basic Icons for Beginners
Error, notice, warning
Black
512x512
Security Collection
Error, warning, signs
Security Elements
signs, Error, warning
Weather Elements
Error, signs, notice
Danger Symbols
notice, Attention, Error
Web
Gentle Edges
triangle, interface, Attention
technology
Material Design
hard drive, notice, complete
other
Computer And Media 1
mail, paper, notice
Paper Works, Exchange Mails, notice
notice, speaker, protest
notice, Error, problem
Logo
Entypo
Logo, F.a.q., Info
Elegant Font
PNG ICO ICNS SVG MORE
UI
Outline
Freeline
warning, flag, notice
PNG ICO ICNS MORE
Desktop apps
Pixel
Splashyfish
notice, Alert, triangle
16x16
Computer & hardware
Smooth
Futurosoft
text editor, notice
128x128