Compress Audio
Reduce MP3, WAV file size online for free.
Drop your file here
or click to browse your files · Max file size: 1 GB
Max file size: 1 GB
1 file ready
check_circleDoneHow it works
Three steps, no software to install.
Upload your file
Set a target size
Download the result
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Frequently asked questions
A few common questions about how TransConvert works.
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How does hitting a target size actually work?
Your audio's real duration and the target percentage compute a bitrate, then ffmpeg re-encodes at it.
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Will it hit the target exactly?
We aim for it, not guarantee it — the result depends on how compressible the file already is.
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Does compression reduce quality?
Yes — that's the trade-off for a smaller size, and it shows more at lower targets.
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Can I compress several files at once?
Yes — add multiple files and download them individually or together as a zip.
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What's the largest file I can compress?
Files up to 1 GB each are supported.
Handled with real security practices
A few specifics, not boilerplate claims.
Nothing compressed until you press Compress
Choosing files and setting your compression level happens locally — your file is only uploaded once you start the job.
No file retention
Your file is processed only long enough to build your download, then deleted immediately.
Abuse protection
Every upload is size-checked, and abusive IP addresses can be blocked instantly.