Audio waveform image — visualise a track
Render an audio file's waveform as an image. It runs entirely in your browser using canvas (0 uploads, works offline) — your file never leaves your device.
How to use it
- Choose an audio file.
- Adjust the options.
- Download the result.
FAQ
How do I do this for free?
Choose the audio and this page decodes it with Web Audio and draws its waveform — on your device with no upload, no watermark and no account.
Is my file uploaded anywhere?
No. Everything happens in your browser and nothing is transmitted or stored, which you can verify by turning off your Wi-Fi. That is the whole point of an on-device tool.
Why does on-device processing matter here?
Your files stay private — nothing is sent to a server, so nothing can be logged, cached or leaked, and it keeps working offline.
What formats are supported?
MP3, WAV, OGG and other formats the browser can decode; output is a PNG.
Limits
Runs in the browser, so very large files are limited by your device's memory; output is a standard image or file.
Related
The video thumbnail grabber captures frames; the voice recorder records audio.
Bookmark this page (Ctrl+D, or ⌘D on Mac) or install the app — it works offline the next time you need it.