PNG SVG PSD EPS MORE
Signs
Flat
User interface
Close, cancel, Error
DarkRed
512x512
PNG ICO ICNS MORE
Dark Glass
exclamation, Alert, Error
128x128
Oxygen
stop, Close, cancel
48x48
Nuvola
Error, wrong, warning
Humility
Error, wrong, Alert
Free Web Design
Alarm, alarm clock, exclamation
16x16
Alert, exclamation, Find
exclamation, warning, wrong
mini, Alert, exclamation
Fugue
Error, warning, wrong
Alert, warning, wrong
scissors, wrong, warning
Error, wrong, spell
Error, Alert, cone
Alert, Error, magnet
red, Small, warning
IVISTA
256x256
Phuzion
Alert, wrong, exclamation
Mixed
Smooth
stop, gtk, Dialog
UI
Pixel
Fugue Icons
Check, Error, spell
Business & finance
3D
delete, Error, remove
Photography & graphic design
Error, Close, wrong
Function icons
Error, warning, Info