Upload one or more MP3 files from your device.
Pick a bitrate (and sample rate if shown). Lower bitrates create smaller files.
Click Compress. Download when processing finishes. Each file stays available for up to 5 downloads.
Dial bitrate down for voice notes and podcasts, or keep it higher for music you care about.
Smaller MP3s clear email and form limits more reliably and upload faster on mobile data.
Compress MP3 online without installing a desktop audio suite.
Speech often sounds fine around 64-96 kbps. Music usually needs 128 kbps or higher. Start with the default on this page, listen once, then lower bitrate only if size still blocks sharing.
WAV is typically much larger. Convert or compress to MP3 when you need a shareable file; keep WAV for editing masters.
Lower bitrates remove some detail. Voice usually tolerates more compression than music. Preview after download if fidelity matters.
Try 128k for general music sharing and lower for speech. Raise bitrate if you hear harshness or missing highs.
Yes. Upload a batch within plan limits, compress in one job, and download each file.
This page compresses MP3 inputs. Use a WAV→MP3 conversion pair or the WAV compressor flow if your source is uncompressed audio.