- Upload: Drag and drop or click to upload 2-10 audio files (MP3, WAV, OGG, WebM, M4A).
- Arrange: Use the up/down arrows to reorder tracks. Remove unwanted files with the × button.
- Gap: Optionally set a pause (0-10 seconds) between tracks.
- Merge: Click 'Merge All' — files are decoded, concatenated, and rendered using OfflineAudioContext.
- Download: Preview the merged audio in-browser and download as a WAV file.
Audio Merger / Joiner — Combine Audio Files in Your Browser
Our Audio Merger / Joiner combines multiple audio files into a single track using the Web Audio API's OfflineAudioContext — entirely in your browser with no uploads or server processing.
How It Works
- Decode: Each audio file is decoded into raw PCM data using the browser's built-in audio decoder.
- Arrange: Tracks are placed sequentially with optional gaps between them.
- Render: An OfflineAudioContext renders the combined audio at 44.1kHz.
- Encode: The rendered buffer is encoded to WAV (16-bit PCM) for download.
Features
- Multi-format input: MP3, WAV, OGG, WebM, M4A — any format your browser supports
- Up to 10 files: Merge 2 to 10 audio files in one operation
- Drag-to-reorder: Use ↑/↓ buttons to arrange tracks in any sequence
- Configurable gaps: Add 0-10 seconds of silence between tracks
- Duration display: See individual track durations and total merged duration
- In-browser preview: Listen to the merged result before downloading
- WAV output: Lossless 16-bit PCM at 44.1kHz
Common Use Cases
- Podcast editing: Join intro, segments, and outro into one file
- Music compilation: Create mixtapes or medleys from multiple songs
- Audiobook chapters: Combine chapter recordings into a single file
- Sound effects: Chain multiple sound effects for video editing
- Ringtone creation: Combine audio clips into custom ringtones
Privacy
All audio processing uses the standard Web Audio API in your browser. No audio data is ever transmitted to any server. Your files remain 100% private.