• Single HTML file, works entirely offline
• 20+ object types including galaxies, nebulae, black holes, pulsars, comets and more
• Fully customizable colors, intensity, seed and parameters
• Export PNG up to 4K resolution
• Export animated WebM video (all browsers)
• Export animated MP4 video (Chrome)
• Runs on Windows, Mac and Linux

Open the file in Chrome or Firefox, choose an object type, adjust the parameters, and export. The same seed always produces the same image, so you can always go back to a composition you liked.

Object types

• Nebula: Diffuse, Planetary, Supernova
• Galaxy: Spiral, Barred Spiral, Elliptic, Edge-on
• Stars: Star / Binary, Star System, Constellation
• Exotic: Black Hole, Pulsar, Quasar, Wormhole, Cosmic Web
• Also: Star Field, Aurora, Planet, Comet, Deep Void

Export formats

• PNG Desktop 1920x1080
• PNG 4K 3840x2160
• PNG Mobile 1080x1920
• WebM animated video (3 to 30 seconds)
• MP4 animated video (Chrome 94+)