How to use this tool
Add two or more files, put them in the order you want with the arrow buttons, choose a crossfade length if you like, then click Join files.
Example
Join an intro, a voice-over and an outro into one file, with a one-second crossfade.
Tips
All files are converted to the first file’s sample rate. Very long files use a lot of memory, so join in parts if your browser slows down.
Frequently asked questions
Is this tool free?
Yes. It runs in your browser and your files are never uploaded.
Which files work?
MP3, WAV, M4A, OGG, AAC, FLAC and common video files that your browser can play, up to about 250 MB. DRM-protected files cannot be opened.