Audio Compressor

It always creates an MP3 at 64, 96, 128 or 192 kbps. The audio is re-encoded, so the result is lossy and source metadata is not preserved.

It averages the source channels into one channel. That can suit speech and reduce data, but it removes stereo separation.

No. A source that already uses a lower bitrate or efficient encoding may not shrink. Files are limited to 100 MB and 30 minutes, with additional browser-memory safeguards.