Audio Merger & Joiner
Combine Audio Tracks
Combine multiple recordings into one seamless audio file, reorder clips, trim tracks, and add optional silence gaps or smooth crossfades.
What is Audio Merger & Joiner?
Audio Merger & Joiner combines multiple MP3, WAV, M4A, FLAC, and OGG tracks into a single continuous audio file. You can reorder clips, set individual clip start/end trim points, balance per-track volume levels, and choose between seamless butt-joins, custom silence gaps (e.g. 1–3 seconds between chapters), or smooth cosine crossfades.
How to Use Audio Merger & Joiner
Add two or more audio tracks
Upload multiple audio files at once, or click Load 2 Sample Tracks to test joining immediately.
Reorder and trim clips
Move tracks up or down in the playlist and adjust each clip's start, end, and volume.
Set gap or crossfade transition
Choose a smooth Crossfade (0.5s–5s) to blend songs together, or add a Silence Gap between voice segments.
Preview and export merged audio
Play the combined timeline and download your unified audio file.
Key Features
Combine unlimited audio clips in different formats and sample rates automatically
Smooth Equal-Power Cosine Crossfade option for DJ-style track transitions
Configurable Silence Gap between clips for podcast segments and audiobooks
Per-clip start/end trimming and volume balancing plus master peak normalization
Visual multi-track timeline showing where each clip starts and ends
Tips & Best Practices
- 1
Enable a 1.5-second Crossfade when joining background music tracks so there is no abrupt jump.
- 2
Turn on 'Auto-Normalize All Clips' when combining recordings from different microphones.
Why Use Our Online Audio Merger & Joiner?
Audio Merger & Joiner processes and generates audio directly inside your browser using modern Web Audio and Speech APIs. Your text and voice recordings stay private on your device with zero server uploads required.
Frequently Asked Questions
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