
Flexi
Iridescent gel organisms that pulse with your bassline.
The mindblob is Flexi's signature creation: a volumetric gel entity that deforms in response to audio frequencies. Version 2.0 added multi-layer depth compositing, making the blob appear genuinely three-dimensional. Bass frequencies cause contractions while harmonics create surface shimmer. No two bars look the same.
Blob worlds, molten textures, mindblob-style surfaces, and drifting chemistry. A richer, more analog-feeling lane for silky audio-reactive scenes.
Organic glow, paint, blobs, magma, and soft flow.
Upload any audio
Drag in a local file, connect a mic, stream a radio URL, or use one of the included sample tracks.
Real-time analysis
The Web Audio API analyses frequency content, amplitude, and transients at up to 60 fps, all without leaving your tab.
Shader renders the result
Butterchurn translates that data into GLSL shader parameters. Flexi - mindblob 2.0 maps those parameters into its own visual language.
See Flexi - mindblob 2.0 respond to your music.
No account. No install. Works in any modern browser with WebGL2 support.
Open visualizer with this preset
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Nuclear plasma meets organic gel — controlled fusion of styles.

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Convection cells of glowing rock, driven by your music's heat.

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Chromatic paint flooding the frame in real time with every beat.