Radioactive, biohazard, high-voltage, and warning signs plus the alert marks that go with them. Click any symbol to copy it instantly.
Hazard symbols flag danger at a glance. This library gathers the radioactive, biohazard, and skull-and-crossbones marks, the warning and caution signs, the electrical and high-voltage glyphs, and the exclamation marks used for alerts — every one a plain Unicode character you can copy into labels, docs, and messages.
The classic danger signs for radiation, biological hazards, and poison.
General warning marks and the high-voltage and electrical hazard signs.
Exclamation and cross marks used to draw attention to a danger or error.
Copy the no sign (prohibited) symbol and related prohibition and no-entry markers for warnings and notices.
Use UltraTextGen to convert plain text into bold, italic, cursive, and 100+ other Unicode font styles — free and instant.
Open UltraTextGen →Road, traffic, and transit signs to copy and paste.
Recycling, eco, and environmental marks in Unicode.
Unique Unicode symbols with individual meaning and standalone appeal.
The trefoil-and-circles sign (☣) engineered in a 1966 Dow Chemical lab to be instantly memorable and completely meaningless on its own.
🛑 U+1F6D1.
The skull and crossbones (☠) that marks poison and flies on the Jolly Roger.