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Fire fluid simulation

Fire mode starts a free WebGL fluid simulation with fast fade, hot swirl, and bloom that pushes bright cores for flame and smoke style motion. Tap Start, then paint. Nothing to install.

This browser cannot draw a canvas.

Runs in your browser after you tap Start. Nothing to install.

Pick a file from your device. Audio stays in this tab.

How this fire mode feels

Fire mode raises density fade so strokes lift and vanish like heat rising off a flame. Swirl runs higher for restless, jittery edges that never quite settle. Bloom and sunrays push bright cores so hot spots actually read as hot. It is a visual real-time fluid, not a combustion engine.

Compare it with water mode when you want lasting, cool trails instead of fast, hot ones.

  • Faster density fade for rising heat
  • Higher swirl for wild, restless edges
  • Strong bloom for glowing cores
  • Sunrays add extra punch around bright spots

Tips for flame and smoke looks

Use quick, upward strokes to mimic rising flame. Warm custom colors help sell the effect. Lower brush size for sparks and small flicks of light. If the screen feels too busy, turn sunrays off under Advanced.

Honest scope

This mode will not predict real fire behavior or fire safety. It only looks the part. Browser fluid and engineering solvers serve different jobs. See CFD vs browser fluid simulation.

Questions

No. It tunes a real-time dye fluid so motion reads as flame or smoke. It is built for visuals and play, not physical accuracy.

A higher fade speed is part of the fire look. Lower fade under Advanced if you want longer trails instead of a quick burn out.

Yes. Use Screenshot on the dock, or press S when the page is focused, to download the current frame as a PNG.

Bloom and sunrays cost extra GPU time. Auto quality helps by stepping down on its own. Turn either effect off under Advanced on older devices.