Vortexia is free VJ software that runs entirely in your browser — no install required. Built for DJs and live performers, it renders GPU-accelerated, audio-reactive fractal visuals that beat-sync to any audio source in real time.
Vortexia is browser-based VJ software: generative, audio-reactive visuals with no download, no licence and no install. It is worth being clear about where it sits against the professional tools, because they are not the same job. Resolume Arena, VDMX and similar suites mix video clips, map projections across multiple surfaces, and take MIDI from hardware controllers. Vortexia does none of that. What it does instead is generate the visual live from mathematics and sound: eight GPU fractal engines, six 2D and two raymarched in 3D, driven by a 128-bin frequency spectrum split across bass, mid and treble so a kick and a cymbal produce different motion. For a club VJ running a mapped rig, that is not a replacement. For a DJ streaming a set, a bedroom producer, or anyone who wants a moving backdrop without a laptop full of clips and a licence key, it removes the entire setup problem: open a browser, route your audio in, and paste one URL into OBS. Zoom reaches 100,000x live, trigger links fire effects from a Stream Deck, and connecting Twitch or Streamlabs makes subs, bits and raids drive the visuals too. Free at 720p with a small watermark, no time limit; Plus is $4.99 a month.
How to use Free VJ Software in Your Browser
Route your audio. Send your DJ software or mixer output to a virtual cable or audio interface, then select it as the browser input device.
Build your look. Pick an engine and adjust colour, zoom, kaleidoscope and aberration. Save presets locally, or browse the marketplace.
Send it to the projector or the stream. Full-screen the viewer for a live room, or paste the OBS link into a Browser Source at 1920x1080 for a stream.
Put effects on a Stream Deck. Create a trigger link in the dashboard and paste it into a Stream Deck key, so you can fire effects on drops and transitions without leaving your DJ software.
Specs & output
Engine
Chaos Prime
Render Mode
nemesis
Iteration Depth
110
Default Zoom
1.20
Colour Shift
180°
Output (Free)
720p / 30fps + watermark
Output (Plus)
1080p / 60fps, no watermark
Output (Pro)
4K / 60fps, brand-kit logo overlay
Audio Source
Browser tab audio (FFT, real-time)
Last Updated
2026-08-24
Frequently asked questions
Is this a replacement for Resolume?
Not for a professional VJ. Resolume mixes clips, maps projectors and takes MIDI, and Vortexia does none of those. It is a replacement for the specific case of wanting live audio-reactive visuals without buying, installing or learning a suite - which is most streamers and a lot of DJs.
What do I actually get for free?
Three of the eight engines at 720p and 30fps with a small watermark, Twitch integration, and no time limit or card. It is a tier rather than a trial. Plus at $4.99 a month removes the watermark and adds 1080p at 60fps, all eight engines, and YouTube, Kick and TikTok.
Can I control it live during a set?
Yes. The dashboard drives the output over server-sent events, so preset, colour, zoom and engine changes appear within about a second without touching OBS. Trigger links put effects on a Stream Deck key for drops and transitions.
How do I get my DJ software audio in?
Route the output to a virtual cable (VB-Cable on Windows, BlackHole on Mac) and select it as the browser input, or use an audio interface or mixer with USB out, which already appears as an input device and needs no cable software at all.
Does it need a good machine?
The 2D engines cost about 1ms per frame at 1080p, which integrated graphics handle. The 3D engines are roughly ten times heavier and are capped at 720p for that reason. Performance Mode drops the render resolution if you are also gaming.
About the author
Yousef @ Vortexia — Vortexia Engine Creator.
Yousef builds Vortexia — a browser-based, GPU-accelerated audio-reactive visual engine used by streamers and DJs on Twitch, Kick, YouTube Live and TikTok Live.