Upload a WAV file, pick a bitrate, download a much smaller MP3
Input must be .wav (mono or stereo). Lower bitrate = smaller file, more audible quality loss. Output is always MP3.
This audio compressor shrinks a sound file's size by re-encoding it at a lower bitrate — trading some audio quality for a much smaller file. It runs entirely server-side: upload a WAV, get back an MP3.
Choose your .wav file.
Pick an MP3 bitrate from the dropdown.
Press "Compress Audio" to download the MP3.
Yes — there's no paywall, no watermark, and no sign-up required.
WAV is uncompressed audio, so the encoder reads the raw samples directly and compresses them once, to MP3. Feeding it an already-compressed format like MP3 or AAC and re-compressing it tends to make quality worse without much size benefit, so this tool doesn't try to.
Not on this tool — it only accepts .wav as input. If you have an MP3, M4A, or other compressed audio file, you'd need to convert it to WAV first in another tool before this one can process it.
Options range from 320 kbps (near-transparent quality, larger file) down to 32 kbps (small file, noticeably lower quality). 128 kbps is a reasonable default for general listening; go lower only if file size matters more than fidelity.
MP3 compression at this stage is lossy — some detail is discarded permanently, more at lower bitrates. Speech tends to hold up fine even at low bitrates; music with a wide dynamic range shows the loss sooner.
A raw WAV recording can be tens of megabytes for just a few minutes of audio. Compressing it to MP3 at 96-128 kbps usually gets it small enough to send as a normal attachment instead of hitting a message or email size limit.
Both are supported and detected automatically from the WAV file — a mono recording (like a single voice) stays mono in the output MP3, and stereo stays stereo.
Yes — your file is processed for the request and never saved anywhere. No account or sign-up is required to use it.
Anyone working with raw WAV recordings eventually needs a smaller file for sharing or publishing.
Shrink a raw recording down to something easy to send or archive.
Compress a WAV export from your editor before publishing or hosting it.
Get a recording small enough to send without hitting an app's size cap.
Yes — there's no paywall, no watermark, and no sign-up required.
Not on this tool — it only accepts .wav files as input. If your file is already MP3, M4A, or another compressed format, this tool can't shrink it further.
WAV is uncompressed audio, so the encoder can read the raw samples directly and compress them once to MP3. Re-compressing an already-compressed format tends to make quality worse without much size benefit.
320, 256, 192, 128, 96, 64, and 32 kbps. Lower bitrates mean a smaller file with more audible quality loss.
Yes, both mono and stereo WAV files are supported.
No. Your file is processed for the request and never saved anywhere.