Merge Audio
Concatenate multiple audio files into one MP3.
Merge Audio joins two or more audio files in order into a single MP3. Files are normalized then concatenated in your browser.
Frequently Asked Questions
Are my media files uploaded?
No. Processing uses ffmpeg.wasm in your browser. Files never leave your device. The first run downloads a ~25MB media engine from a CDN.
Why is the first run slow?
The media engine (~25MB) downloads once per browser session from a CDN, then stays cached.
Which formats work?
Most MP4/WebM/MOV and common audio formats your browser and ffmpeg.wasm can decode. Exotic codecs may fail.