What does Audio Waveform Generator do?
Create a downloadable PNG waveform from an audio file that your browser can decode. Tubelexity samples peaks across the recording with Web Audio, then draws bars or a continuous line on Canvas. Choose dimensions, colors, amplitude and transparency, preview the image, and export without uploading audio or loading FFmpeg.
How to use Audio Waveform Generator
- 1Choose browser-decodable MP3, WAV, M4A, OGG or WebM audio.
- 2Review duration and channel count.
- 3Set waveform size, style, amplitude and colors.
- 4Download the rendered PNG image.
Supported inputs and outputs
Inputs
MP3, WAV, M4A, OGG, WebM audio when browser-decodable
Outputs
PNG waveform image
Practical uses
- Creating podcast artwork
- Showing sound levels in a presentation
- Making a waveform graphic for a creator post
Browser and media limitations
- Browser codec support differs, especially on mobile Safari.
- The graphic shows sampled peaks, not a spectrogram or detailed loudness analysis.
- Large files require browser memory to decode.
How local processing works
Web Audio decoding and Canvas rendering stay in this browser tab. FFmpeg is not loaded and audio is not uploaded.
Frequently asked questions
How do I turn audio into a waveform image?
Choose an audio file, adjust the visual settings and download the rendered PNG.
Can I make the background transparent?
Yes. Choose transparent background before exporting the PNG.
Does it work with every audio codec?
No. It relies on the browser decoder; try converting an unsupported file to MP3 or WAV.
Does this measure loudness?
No. It draws a sampled peak waveform for visual use, not a LUFS report.