ZeroUpload
100% private · nothing is ever uploaded

Merge audio without
uploading a thing.

Drop several audio files, arrange the order, and download one combined track — entirely in your browser. Free and unlimited.

Frequently asked questions

Is merging audio free?

Completely — no signup, no watermark, no limit. There is no server, so there is nothing to charge for.

Is my audio uploaded?

No. Files are joined entirely in your browser. Your audio never leaves your device.

Can I merge different formats?

Yes. Files are joined in the order you set and re-encoded to one chosen format, so even mixed MP3/WAV/M4A inputs play as one seamless track.

Does merging affect quality?

Because mixed inputs are re-encoded to a single format, lossy outputs (like MP3) involve a small quality trade-off. Choose WAV or FLAC output to stay lossless.