Free Online Audio Waveform Viewer
See the Waveform of Any Audio File
Need to use Audio Waveform Viewer right now?
A visual waveform makes an audio file's structure instantly readable in a way listening straight through doesn't — where the loud sections are, where there's silence, roughly how the volume changes across the track — information that's useful for editing, trimming, or just understanding a file before working with it.
Other tools in Audio Tools
Features
- Runs entirely in your browser
- Privacy-first — your data is never uploaded
- Real-time, instant results
- 100% free, no sign-up required
- Works on desktop, tablet, and mobile
- No installation needed
Who uses this tool?
About Audio Waveform Viewer
A visual waveform makes an audio file's structure instantly readable in a way listening straight through doesn't — where the loud sections are, where there's silence, roughly how the volume changes across the track — information that's useful for editing, trimming, or just understanding a file before working with it.
This tool decodes an uploaded audio file using the browser's built-in Web Audio API and draws its waveform as a min/max amplitude plot across the full duration, alongside basic file details: duration, sample rate, and channel count.
Decoding happens through the same audio engine your browser uses to actually play audio, so the waveform accurately reflects the real decoded audio data — not an approximation based on file size or bitrate alone.
How it works
- Upload an audio file. Choose any common audio format your browser can play.
- View the waveform. See the amplitude plotted across the full duration.
- Check the file details. Duration, sample rate, and channel count are shown below.
Examples
Typical use
Input
A voice recording with pauses
Output
A waveform clearly showing taller peaks during speech and flat sections during silence.