/nfpa
Canvas NFPA 704 Diamond Generator
Generate fire diamonds with one canvas renderer for live preview, PNG export, print output, and shareable configuration links.
Canvas output
No SVG serialization or image dependencies.
Share links
Ratings can be reopened from URL parameters.
Print-safe sizing
The preview and printed diamond use one geometry.
Canvas builder
NFPA 704
Health2
Temporary incapacitation or residual injury
Flammability3
Ignites at ambient conditions
Instability0
Normally stable
Special notice
Preview
4 inch output
Blue
Health: 2
Red
Flammability: 3
Yellow
Instability: 0
NFPA 704 values should come from a current SDS or safety authority. Non-standard special markings are included for field compatibility and should be used deliberately.