Waveform Viewer
Free online audio waveform viewer. Visualize and analyze audio waveform, play audio with waveform visualization, zoom in/out, customize colors. Supports all audio formats.
About Waveform Viewer
This online waveform viewer allows you to visualize audio files as waveforms directly in your browser. See the shape and amplitude of your audio, play it while watching the waveform progress, zoom in for detailed analysis, and customize colors. Perfect for analyzing audio, checking levels, finding specific parts of recordings, and understanding audio structure.
What audio formats are supported?
All common audio formats are supported including MP3, WAV, OGG, AAC, M4A, FLAC, OPUS, and more. The waveform is generated from the decoded audio data.
What is a waveform?
A waveform is a visual representation of an audio signal showing amplitude (volume) over time. The height represents loudness - taller peaks mean louder sounds, shorter sections mean quieter sounds. It helps you see the structure of your audio at a glance.
How do I use the viewer?
Upload an audio file to see its waveform. Click the play button to listen while watching the progress. Click anywhere on the waveform to jump to that position. Use zoom buttons to see more or less detail. Change colors to match your preference.
What can I use this for?
Analyzing audio recordings to check levels and quality, finding specific sections in long recordings, identifying silent portions or loud peaks, checking if audio is clipped or distorted, comparing different audio files visually, and understanding the structure of music or speech.
Can I zoom the waveform?
Yes! Use the zoom in (+) and zoom out (-) buttons to see more or less detail. Zooming in shows more waveform detail per second, useful for precise editing. Zooming out gives you an overview of the entire audio.
What is the file size limit?
The maximum file size is 50MB for smooth processing in your browser.
How is the waveform generated?
The waveform is generated using WaveSurfer.js, which uses the Web Audio API to decode your audio and render it as a visual waveform. All processing happens locally in your browser.
Is my audio file safe?
Absolutely! All audio processing happens directly in your browser. Your audio file is never uploaded to any server. Everything stays private on your device.
Can I change the waveform colors?
Yes! You can customize both the wave color (unplayed portion) and progress color (played portion) using the color pickers in the settings.