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Libre 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.

Sen límite de tamaño de ficheiroOs ficheiros permanecen privadosNon é necesario iniciar sesiónLibre para sempre

Solta ficheiros aquí ou fai clic para buscar

MP3, WAV, FLAC, OGG, AAC, M4A, Audio sen límite de tamaño de ficheiro

Podes soltar varios ficheiros á vez

Explorar ficheiros

Os teus ficheiros nunca saen do teu dispositivo. Todo o procesamento realízase localmente no teu navegador.

Optimize for your platform

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.