Audio Merger & Joiner
Join multiple audio files into one track with gaps or crossfades.
About the Audio Merger & Joiner
Add as many MP3, WAV, M4A, OGG or FLAC files as you like, reorder them, then join them into a single continuous WAV. Insert silence between tracks, crossfade one clip into the next and normalise the peaks so every part sits at the same level — all rendered offline in your browser.
Popular uses
- audio merger
- audio joiner
- merge mp3
- combine audio files
- concatenate audio
- crossfade audio
Examples
Join podcast parts
intro.mp3 + episode.mp3 + outro.mp3, 0.5 s gapOutput
merged-audio.wav · 48:21DJ-style blend
track-a.wav + track-b.wav, 4 s crossfadeOutput
merged-audio.wav · seamless transitionKeyboard shortcuts
- Copy the main outputCtrl / ⌘ + Shift + C
- Download the resultCtrl / ⌘ + S
- Share this toolCtrl / ⌘ + Shift + S
- Reset the inputsAlt + R
- Open the tool search paletteCtrl / ⌘ + K
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Frequently asked questions
Read more
- How to edit videos and enhance audio completely offline in your browser
Trim on a visual timeline, reframe for Reels or YouTube, grade colour, add text and music, then clean up voice recordings with EQ, loudness normalisation and ID3 tags — without uploading a single file.
- Converting audio in the browser: bitrates, sample rates and when lossless matters
MP3, M4A, OGG, WAV and FLAC each have a job. Here is how to pick one, what bitrate to use, and how ffmpeg.wasm converts files without an upload.
- Preview before you export: why audio tools need a play button
Scrubbing, in/out handles and instant playback turn guesswork into precision when you trim or join audio in the browser.
- MP3, WAV, FLAC, M4A and OGG: which audio format to use when
A practical guide to lossy vs lossless, bit depth, sample rate and why browser tools tend to hand you a WAV at the end.
- How to trim and join audio files without installing anything
Cut a clip, fade it in, join several tracks with a crossfade and export a WAV — using nothing but the Web Audio API in your browser.
Version 1.0.0 · Updated 2026-09-01 · Runs entirely in your browser