vizz.fm

vizz.fm is a real-time audio visualizer for the browser. It turns music or other audio into live visual output, and it is built for people with synesthesia as well as music lovers, musicians and producers, DJs and VJs, streamers, content creators, and podcasters.

The app connects to several audio sources: a microphone, local files, stream URLs, system audio through screen sharing, and audio routed through a virtual audio device. Once audio is connected, it offers dozens of visualizers, including styles such as flowing particles, glowing waveforms, and trippy shaders. Users can adjust colors, speed, intensity, sensitivity, geometry, gain, noise gates, bass attenuation, and spectrum remapping, and they can save presets for quick access. It also supports layering post-processing effects such as kaleidoscope, bloom, and CRT on top of a visualizer.

vizz.fm is delivered as a simple web app. The site says there are no downloads, no sign-up, and no plugins to manage. It is free to use. Browser support is listed for Chrome, Edge, Firefox, Opera, and Brave, while Safari is described as having performance issues with WebGL content; Chrome, Edge, and Brave can capture system audio directly, while Firefox cannot. It can be used with apps such as Spotify, Apple Music, YouTube, or other applications when audio is shared from the browser. For live performance or streaming, the visualizer can run full-screen and be captured with OBS or another screen-recording tool, and the controls can be popped out to another window. Content creators can also use it to record synced video exports for YouTube, TikTok, or Instagram, although the page notes that the built-in FFT recording system is not yet exposed to the user.