Compress Audio Files
Reduce audio file size by lowering bitrate, sample rate or channels.
- Input:
- MP3, WAV, M4A, OGG, FLAC
- Output:
- MP3, M4A
- Max size:
- 100 MB
- Runs:
- On secure servers
What the Audio Compressor does
Shrink audio files by lowering the bitrate and optionally mixing to mono. Ideal for voice recordings, podcasts and voice notes, where 32–64 kbps mono still sounds clear.
Options
- Bitrate: 32, 64, 96 or 128 kbps.
- Convert to mono.
- Output as MP3 or M4A (AAC).
Good to know
Low bitrates are fine for speech but noticeably reduce music quality.
How to use the Audio Compressor
- 1
Drag your MP3, WAV, M4A, OGG, FLAC file into the upload area, or click it to browse your device.
- 2
Adjust the options to suit your needs — the defaults work well for most files.
- 3
Click “Run Audio Compressor” to start processing.
- 4
Preview the result, then download it. Batch results can be downloaded together as a ZIP.
Supported formats
- MP3 is the most compatible lossy audio format. More about the MP3 format.
- WAV is uncompressed audio, ideal for editing but large in size. More about the WAV format.
- M4A is AAC audio in an MP4 container, common on Apple devices.
- OGG is an open container usually holding Vorbis or Opus audio.
- FLAC is a lossless audio format that is roughly half the size of WAV. More about the FLAC format.
Frequently asked questions
Related tools
Audio Converter
Convert audio between MP3, WAV, OGG, FLAC and M4A with bitrate options.
MP3 to WAV
Decode MP3 files to uncompressed WAV for editing software.
WAV to MP3
Compress large WAV recordings into MP3 at your chosen bitrate.
Audio Cutter
Remove a section from the middle of an audio file and join the rest.
Audio Merger
Join multiple audio files into one track in the order you choose.
Audio Trimmer
Keep only the part of an audio file between a start and end time, with optional fades.