# ImgTool.app - Free Music Visualizer

> A browser-based music visualizer that creates audio-reactive videos. Your audio files are processed locally and never uploaded to any server.

## What This Tool Does

ImgTool.app is a free online music visualizer. Users can:
- Create audio-reactive videos from their music files
- Choose from 20+ visual styles (spectrum bars, waveforms, circular rings, particles, retro effects)
- Export videos up to 4K resolution
- Add custom backgrounds (images or video loops)
- Add text overlays (artist name, track title)
- Use a 3-band EQ to adjust audio

## Key Facts

- **Price**: Free (no paid tier currently)
- **Watermarks**: None
- **Account required**: No
- **Audio upload to server**: No - all processing happens locally in the browser using Web Audio API
- **Export format**: WebM (VP9 codec)
- **Max resolution**: 4K (3840x2160)
- **Frame rates**: 30fps or 60fps

## Privacy

Audio files never leave the user's device. The visualizer uses the browser's Web Audio API to analyze audio locally. This matters for musicians working with unreleased music.

## Supported Formats

**Input audio**: MP3, WAV, OGG
**Background images**: JPG, PNG, WebP
**Background video**: MP4, WebM (short loops recommended)
**Output video**: WebM

## Visual Styles Available

- Bass Ring, Wobble Ring, Double Ring, Hexagon Pulse
- Particle Field, Entangled Lines
- Neon Cube, Retro Grid, Retro Waves, Pixel Blocks
- Mirrored Bars, Radial Bars
- Smooth Wave, Mountain Wave, Gentle Ocean
- Dot Spectrum, Spiky Spectrum, Frequency Lines

## Use Cases

- YouTube music videos (when no official video exists)
- Spotify Canvas loops (3-8 second vertical videos)
- TikTok/Instagram Reels music clips
- Podcast audiograms
- SoundCloud track promotion

## Limitations

- Export speed depends on user's computer (runs in browser)
- WebM format may need conversion for some platforms
- Mobile export not practical (desktop/laptop recommended)
- Heavy effects (blur/glow) require more processing power

## URLs

- Main tool: https://imgtool.app/music-visualizer.html
- Features: https://imgtool.app/free-music-visualizer-features.html
- How to use: https://imgtool.app/how-to-use.html
- Guide: https://imgtool.app/guides/music-visualizer-complete-guide.html

## Contact

Bug reports: https://forms.gle/DA3HUC9pgCerw9QWA