Fireworks Simulator
Click the sky or launch shells with adjustable type, color, star count, gravity, and automatic rate.
A QUICK WALKTHROUGH
How to use this tool
- Choose a shell type and color.
- Adjust stars, gravity, and the automatic launch rate.
- Launch by clicking the sky, use Finale, or save the current sky as a PNG.
Local canvas simulation
The animation, controls, PNG export, and share settings run in your browser. No files, sound, video, or server are used.
Bounded controls
Stars per shell are limited to 20–180, gravity to 0–260, and automatic launches to 0–2 per second. The simulator drops old stars to stay responsive.
GOOD TO KNOW
Common questions
Does it make sound?
No. The simulator is silent by design.
Can I export video?
No. Save PNG exports the current canvas only.
Does it upload anything?
No. Everything runs locally in your browser.