Pre-Program Your Entire Show Without Touching a Single Light
Every lighting designer knows the pain: you get 4 hours of stage time to program a show you've been planning for weeks. You're working blind until load-in, guessing at beam angles and color combinations from a spreadsheet. By the time you see your design on a real stage, the clock is already running.
Online Light Show gives you a photorealistic 3D stage in your browser. Build your rig, patch your fixtures, program your cues, and see exactly what your show will look like — weeks before you set foot in the venue. Not a toy. Real fixture behavior, real DMX channels, real beam physics.
WebGL-Powered Real-Time Rendering
Volumetric Beams
Beams cut through atmospheric haze with physically accurate light scattering. Adjust haze density, beam spread, and frost to match real-world conditions. What you see on screen matches what you get on stage.
Gobo Projection
Real gobo patterns projected from moving heads with rotation, shake, and focus blur. Multiple gobo wheels per fixture for layered effects. Sharp-to-soft focus control just like the real thing.
Color Mixing
CMY subtractive mixing, RGB additive mixing, color wheel simulation, and color temperature control. Full CTC range. Accurate color rendering across all fixture types.
Beam Physics
Beam spread angles, zoom ranges, frost filters, prism effects, and intensity curves modeled from real fixture data. Inverse-square falloff for realistic intensity at distance.
60fps Performance
Optimized Three.js and React Three Fiber rendering pipeline. Smooth real-time visualization with dozens of active fixtures, volumetric effects, and atmospheric haze simultaneously.
Real DMX Profiles, Not Generic Placeholders
Every fixture in Online Light Show has a verified channel map built from manufacturer documentation and cross-referenced against the ChamSys MagicQ fixture library. Shutter maps, gobo wheels, color wheels, prism channels, and focus ranges — all accurate to the real hardware.
Moving Heads
Spots, washes, and beam fixtures with full pan/tilt control, fine channels for smooth movement, and accurate beam geometry. Program your movers before you fly a single truss.
LED PARs & Washes
RGB, RGBW, RGBA, and RGBWAUV LED fixtures with accurate color mixing models. Dimming curves and strobe rates matched to real-world behavior.
Strobes & Blinders
High-intensity strobe fixtures with rate, duration, and intensity control. Blinder fixtures with zone control and warm white simulation.
Lasers
Laser fixture simulation with beam color, pattern selection, scan speed, and safety zone visualization. See laser effects in context with your full lighting rig.
Community Library
Growing community fixture library. Can't find your fixture? The profile format is documented and open — create and share your own profiles.
Build Your Venue in 3D
3D Stage Construction
Build stages with trusses (box, triangle, ladder), pipe and drape, stage deck at any height, risers, backdrops, and scenic elements. Drag and drop in 3D space.
Fixture Placement
Hang fixtures on any truss or pipe. Snap-to-grid positioning. Set exact hanging positions, rotation angles, and DMX addresses. Build your patch as you design your rig.
Pre-Built Stages
3 built-in stage templates for common venue types — small theater, medium concert, and large festival. Start from a template and customize, or build from scratch.
Import Stage Plans
Import venue dimensions and rigging points to match your real venue. Design your rig to actual measurements so load-in goes faster.
Full Universe Control — 512 Channels
Online Light Show isn't just a visualizer. It's a full DMX programming environment. Create cue lists, build chase sequences, design effects, and output real DMX data to your lighting rig via Art-Net or sACN.
Art-Net / sACN
The desktop app receives and sends live DMX data via Art-Net or sACN over your local network. Connect your console and see changes render in 3D in real time.
Cue Lists
Build numbered cue lists with fade times, delays, and auto-follow. Step through your show cue-by-cue and see every transition render live in the 3D viewport.
Effects Engine
Built-in effects generator for chases, rainbow sweeps, intensity waves, and position effects. Apply effects to fixture groups with adjustable speed, size, and offset.
Chase Sequences
Multi-step chase builder with per-step timing, cross-fade control, and direction options (forward, reverse, bounce, random). Preview at any speed before going live.
If You Touch Lights, This Is for You
- Theater Techs — Pre-program your show before tech week. Walk into the venue with cues already built and tested in 3D.
- Event Producers — Show clients exactly what their event will look like before you rent a single fixture. Win bids with 3D previews.
- Lighting Students — Learn DMX, fixture types, and show programming without access to a rig. The best classroom is a free one.
- Churches & Houses of Worship — Design volunteer-friendly lighting looks that can be recalled week after week with consistent results.
- Bands & Touring Artists — Pre-program your tour lighting in a hotel room. Arrive at the venue with your show on a USB stick.
- Lighting Designers — Iterate on designs faster. Try 10 ideas in an hour instead of 2. Present rendered previews to directors and clients.
From Browser to Beams in Minutes
- Open in Your Browser No installation needed for the web version. Launch Online Light Show and start designing immediately. Desktop app available for offline use and DMX output.
- Build Your Stage Add trusses, set dimensions, position rigging points. Start from a pre-built template or construct your venue from scratch in 3D.
- Add Fixtures Select from the fixture library, hang them on your trusses, and set DMX addresses. Verified profiles ensure every channel behaves like the real hardware.
- Program Your Show Control fixtures directly — pan, tilt, color, gobos, intensity. Build cue lists, design effects, and watch every change render in real time.
- Export or Go Live Save your show file, export your patch list, or connect via Art-Net/sACN to output real DMX to your lighting rig on stage.
Run Anywhere
- Web Browser — Runs in Chrome, Firefox, Safari, and Edge. No plugins, no installation. Open the URL and start designing.
- Desktop App — Built with Tauri v2 (Rust) for macOS, Windows, and Linux. Adds offline support, local file save, and Art-Net/sACN UDP networking.
- MagicQ Compatible — Fixture profiles verified against the ChamSys MagicQ library. If it works in MagicQ, it works in Online Light Show.
Your Shows, Your Data
Online Light Show runs locally in your browser or desktop app. Your stage designs, fixture patches, and cue data are stored on your device. No accounts required, no data collected, no analytics, no tracking. DMX output stays on your local network.