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Gratuït Audio Joiner

Merge multiple audio files into one, in any order, with optional crossfade. Export as MP3, M4A, or WAV. Runs entirely in your browser — no upload.

Sense límit de mida de fitxerEls fitxers es mantenen privatsNo cal iniciar sessióGratuït per sempre

Deixa els fitxers aquí o fes clic per navegar

MP3, WAV, FLAC, OGG, AAC, M4A, Audio sense límit de mida de fitxer

Pots deixar múltiples fitxers alhora

Navegar pels fitxers

Els teus fitxers no surten mai del teu dispositiu. Tot el processament es fa localment al teu navegador.

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Stitching audio files together normally means an upload to an ad-heavy site. This merges them with the real FFmpeg engine running in your browser.

1
FFmpeg.wasm loads once
The WebAssembly build of FFmpeg (~30 MB) downloads on first use and is cached afterwards.
2
You add and order your files
Drop in multiple audio files and arrange them with the up/down controls. Nothing is uploaded.
3
FFmpeg concatenates them
The tracks are joined in order — back-to-back, or with a smooth crossfade between each — using FFmpeg's concat/acrossfade filters, all on your CPU.
4
Download the merged file
The result is encoded once to MP3, M4A, or WAV and offered for download.