Music Visualizer Online — live mic & audio visualizer_

A free online music visualizer for your mic, a tab or your own files

This music visualizer turns sound into moving light in real time. Point it at a browser tab playing Spotify or YouTube, drop in your own music files, use your microphone, or press play on the built-in demo beat. Every scene is a WebGL shader running on your graphics card, so it stays smooth fullscreen on a big screen. Use it as a backdrop at a party, on a TV or second monitor, as a stream overlay, or floating in a small window while you work.

It is free, with no account and no watermark on recordings, and nothing to install.

Microphone visualizer: visuals for any sound in the room

Choose Microphone and the visuals react to whatever your device hears: a record player, a band rehearsal, a party speaker or your own voice. That makes it a live audio visualizer for music that is not playing on the computer at all. The browser asks once for permission, the sound is analysed in the page, never sent anywhere, and only recorded if you press Record, and the automatic level control keeps quiet rooms and loud ones equally lively. If you remember the Winamp and Milkdrop days, the tunnel, nebula and spectrum scenes are in that spirit, rendered on your graphics card.

How to visualize Spotify, YouTube or another tab

Choose Tab audio (or press T). Your browser asks what to share: pick the tab that is playing music and make sure “Also share tab audio” is switched on. On Windows you can share the entire screen with system audio to visualize any app, not just a browser tab. Tab capture works in Chrome and Edge on a desktop. To stop, use the browser's own stop-sharing bar.

Play your own music files

Press My files (O) or drop audio files anywhere on the page. Anything your browser can play works, which in practice means MP3, M4A/AAC, WAV, OGG and FLAC in most browsers. Drop several at once to build a playlist: the tracks play in order and start again at the end. There is a seek bar, previous and next buttons, N for the next track, and your keyboard's media keys work too.

The sixteen scenes

• Tunnel: a neon tunnel that races forward on the bass. Nebula: swirling gas clouds and stars that swell with the music.
• Halo: a circular spectrum with a waveform ring. Horizon: a synthwave sun over a racing grid, with your spectrum as the mountains.
• Liquid: waveform ribbons fed back into themselves, Milkdrop-style. Terrain: fly over a 3D landscape built from the last few seconds of sound.
• Bars: a clean spectrum analyser with glowing peaks and a reflection. Warp: a starfield that speeds up on every kick.
• Kaleido: an eight-fold kaleidoscope. Orb: a glowing sphere with a spectrum corona and an orbiting ring.
• Scope: an XY oscilloscope tracing Lissajous shapes. LED: a dot-matrix wall scrolling the spectrum like a waterfall.
• Ripple: a circular spectrogram where every sound ripples out from the centre. Plasma: old-school demoscene plasma stirred by the bass.
• Lasers: concert laser beams, one per frequency band. Cells: living Voronoi cells, each lighting up to its own band.

Colours come from eight palettes: Neon, Retrowave, Fire, Aurora, Ice, Terminal, Gold and Mono.

Auto-DJ and BPM detection

Auto-DJ runs the show for you. It watches the energy of the music and switches scene when a drop hits after a quieter passage. Otherwise it moves on every 32 beats so the show never goes stale. Every other change also rotates the colour palette, and the switch is a dissolve rather than a hard cut.

The BPM detector finds kicks from sudden jumps in bass energy, measures the time between them and votes on the most likely tempo. The result is folded into the 85 to 170 BPM range where most dance and pop music sits, and appears in the corner once enough beats agree, usually within a few seconds.

Why loud and quiet music look just as lively

An automatic level control follows the recent peak and scales the analysis to it, so a quiet microphone and a loud tab both fill the screen. On top of that, Reactivity sets how hard the music drives the picture: lower it for calm ambience, raise it for a club look. Trails controls how long motion lingers (Liquid and Warp love high trails) and Glow sets the bloom. Silence stays dark.

Picture-in-picture, video clips and snapshots

Press Pop out (P) and the visualizer moves into a floating picture-in-picture window that stays on top of your other apps and keeps animating when you switch tabs. Record clip (R) captures the visuals as a video together with the sound of the current source; press it again to stop and download. The file is WebM, or MP4 where the browser cannot record WebM. Snapshot (S) saves the current frame as a PNG.

Use it as a stream overlay or on a second screen

Go fullscreen on a second monitor or TV, or capture the browser window in OBS. In fullscreen the buttons, on-screen info and mouse pointer fade away after a few seconds without movement, and the screen is kept awake while it runs. Press H to hide the track, scene and BPM info for good.

Put your band name on the screen

Playing a gig, streaming a set or filming a promo clip? Type your band or artist name in the Band name panel and it appears over the visuals, in the colours of the current palette. Add an optional tagline such as live tonight or a date, choose the position (center, top, bottom or corner), one of 25 fonts (heavy display type, neon tubes, script, pixel, terminal, gothic, metal and horror lettering), a style such as neon glow, chrome, 3D block, long shadow or glitch, and the colour: the scene palette, a rainbow, white, gold or your own. Let it come and go: it flies, slides, types, scrambles, drops, assembles, spins or flickers in, floats, waves or shakes on the beat while it is on screen, leaves after the time you set and comes back early when the music drops, in a new spot if you pick Wander. It can also pulse on the beat. The name is also on your snapshots, recorded clips and the picture-in-picture window, and Copy link includes it, so a projector laptop opens with your name ready. B flies it out or back in, I replays the entrance. The name is drawn on a separate layer, so the visuals themselves are exactly the same.

Install it as an app

In Chrome or Edge, click Install as an app in the panel, or the install icon in the address bar (or ⋮ › Cast, save and share › Install page as app). The visualizer then opens in its own window without browser tabs, gets an icon in your Start menu, dock or app list, and keeps working offline after the first visit, because the scenes and the demo beat are generated on your device. On Windows and macOS you can also open music files with it: right-click a track and choose Open with › Music Visualizer.

Why it needs WebGL

Every scene is a shader that runs on your graphics card, which is what makes the nebula, the terrain and the bloom glow possible at a smooth frame rate. WebGL is available in every modern browser; if it cannot start, check that hardware acceleration is on. When frames start taking too long, the render resolution is lowered automatically and raised again once there is headroom.

Settings and share links

Your scene, colours and sliders are remembered in your browser for next time. Copy link makes a link that opens the visualizer with the same scene, palette and settings, handy for sending a look to a friend or saving a favourite. Reset all settings puts everything back to the defaults.

Private: your audio stays on your device

Audio is analysed with the Web Audio API and drawn with WebGL, all inside your browser. Microphone input, tab audio and your files never leave your device, and there is no account.

Keyboard shortcuts

1–9 and Shift+1–7 pick a scene · ← → previous or next scene · A Auto-DJ · C next colours · F fullscreen · P picture-in-picture · Space play/pause · N next track · D / T / O / M demo, tab, open files, mic · R record · S snapshot · H hide on-screen info · B band name on/off · I band name entrance · ? show shortcuts · Esc close help or exit fullscreen.

More music tools

Play your library in the MP3 player or the Winamp-style player, tune in to the web radio player, or let the endless music generator feed the visuals. Make your own tracks in the 8-bit chiptune studio and tidy them up in the audio editor, or play along on the virtual piano. For another fullscreen display, try the LED scrolling banner. See all music tools.