Audio Joiner
Merge multiple audio files into a single track with gapless or custom crossfade, exported as WAV.
Clips are decoded through one AudioContext (browser resamples mismatched rates), laid end-to-end with your chosen gap, mono is up-mixed as needed, then encoded as 16-bit PCM WAV. Client-side only.
About Audio Joiner
Merge multiple audio files into a single track with gapless or custom crossfade, exported as WAV.
Audio Joiner uses your browser's built-in audio capabilities to test, record or generate sound with real-time visual feedback.
How to Use Audio Joiner
- Allow microphone or speaker access when the browser asks.
- Follow the on-screen meter, waveform or controls.
- Perform the test or action you came to do.
- Read the results or download any recording.
Key Features
- Real-time meters and waveforms for clear feedback.
- Uses your browser's native audio APIs — no plugins.
- Nothing is recorded or uploaded unless you choose to download it.
Frequently Asked Questions
Why does Audio Joiner ask for microphone permission?
Only tools that actually listen need microphone access — and permission is requested by your browser, used locally, and never sent to a server.
Is Audio Joiner free to use?
Yes. Audio Joiner is completely free with unlimited use — no account, download or payment required.
Is my data uploaded to a server?
No. Audio Joiner runs entirely in your browser. Your inputs are never sent to our servers or stored anywhere.
Does Audio Joiner work on mobile?
Yes. The interface is fully responsive and works in any modern browser on Android, iPhone, tablets and desktops.
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