Free Online Audio Visualizer
Visualize any audio file as a real-time frequency spectrum. Play, watch, and export as PNG — all in your browser.
- Free
- No sign-up
- Stays on your device
Why use this tool
Real-Time Spectrum
64-band frequency visualizer animates in real time as audio plays.
Export PNG
Save a screenshot of the visualizer as a high-quality PNG image.
100% Private
No uploads — all processing happens locally in your browser.
Zero Latency
Web Audio AnalyserNode gives truly real-time frequency data.
Any Audio File
Works with MP3, WAV, OGG, M4A, FLAC, and more.
Browser-Based
No software to install. Works in any modern browser.
Frequently asked questions
Yes — completely free, no account, no limits.
It uses the Web Audio API's AnalyserNode to perform a Fast Fourier Transform (FFT) on the audio in real time, then renders 64 frequency bands on a canvas.
Yes — click the "Export PNG" button to download a 900×300 pixel image of the current visualization state.
Any audio format your browser supports: MP3, WAV, OGG, M4A, FLAC, AAC.
No. All processing is done locally in your browser.
Yes — images you export from this tool are yours to use however you like.
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