Merge and combine multiple audio files into one ā reorder tracks, add crossfade, no upload
Drop audio files here or click to browse
Add several files ā MP3, WAV, FLAC, OGG, M4A. Processed locally, never uploaded.
Audio Joiner combines multiple audio files into a single track directly in your browser. Whether you need to merge podcast segments, combine music tracks, or join voice recordings, this tool handles it without uploading your files to any server.
The tool uses the Web Audio API to decode each file into raw PCM, concatenates the buffers in the order you set, applies an optional crossfade between consecutive tracks, and encodes the result as a WAV file. All processing happens in your browser ā no server involved.
Drag tracks to reorder them, or use the up/down arrows. Set a crossfade of up to 3 seconds to smoothly blend the end of one track into the start of the next ā useful for music mixes and seamless podcast edits. Set crossfade to 0 for a clean back-to-back join.
Merging podcast intro, segments, and outro. Combining multiple music tracks into one mix. Joining split voice recordings or audiobook chapters. Assembling sound effects into a single file.
Need other edits? Try our Audio Trimmer, Speed Changer, Volume Booster, or Audio Converter.