# Audio Waveform Generator Online - Turn Sound into a PNG or SVG Image

> Free online audio waveform generator: render MP3, WAV and more as bar, mirrored, line or filled sound-wave images with custom colors and sizes. PNG and SVG.

- URL: https://qilingtools.com/en/audio/waveform
- Category: Audio Tools (https://qilingtools.com/en/audio)
- Tags: [Audio](https://qilingtools.com/en/tags/audio), [Charts & Visualization](https://qilingtools.com/en/tags/chart)
- Last updated: 2026-10-26
- Price: Free, no sign-up
- Privacy: Runs locally in the browser; files are never uploaded

Turn a song or recording into a clean waveform image for podcast artwork, track posters, video assets or keepsakes — such as a voice message printed as a sound wave on a card. The audio is decoded and drawn right in your browser; tweak the style, colors and size with a live preview, then export a PNG and a scalable SVG in one click.

## How to use

1. Upload an audio file and wait for the waveform preview
2. Choose the style, colors, background and image size
3. Click generate and download the PNG and SVG

## Features

- Four styles: bars, mirrored bars, line and filled wave
- Solid color or gradient, with optional transparent background
- Common size presets or any custom size
- Exports both PNG and infinitely scalable SVG
- Live preview while you adjust
- Decoded with Web Audio in your browser — no server involved

## FAQ

### PNG or SVG — which should I use?

PNG is a bitmap that is ready for social posts and video edits. SVG is a vector file that stays sharp at any size, so it suits print, merch and the web, and it opens in Illustrator or Figma for further editing.

### Why does a file fail to decode?

The waveform is read with your browser's built-in decoder, which does not support a few niche formats such as AMR or WMA. Convert the file to MP3 or WAV with the Audio Converter first.

### Are my files uploaded to a server?

No. Everything runs locally in your browser via WebAssembly. Files never leave your computer and are discarded when you close the page.

### Do I need to sign up or pay?

No. The site is completely free, requires no account, has no usage limits and adds no watermarks.

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- [Normalize Audio](https://qilingtools.com/en/audio/normalize): Free online loudness normalizer: bring a batch of files to the same perceived loudness with EBU R128 / LUFS, or even out uneven speech with compression.
- [Split Audio](https://qilingtools.com/en/audio/split): Free online audio splitter: cut long recordings, album rips and audiobooks into parts by count, fixed length or specific time points, downloaded as a zip.
- [Mix Audio](https://qilingtools.com/en/audio/mix): Free online audio mixer: play voice, a backing track and background music together, with adjustable levels and a built-in limiter. Processed locally.