Compress MP3 to an exact size.
Pick a target, 3 MB to 20 MB, or type your own, and we tune the bitrate to land your audio near it. Uploaded privately and deleted after 1 hour. No watermark, no signup.
On-target
Auto-tunes to your limit
Quality-aware
Stays usable
Private
Deleted after 1 hour
Target size
How it works
- 01
Pick a target size
Choose a preset (3 MB to 20 MB) or type any size in MB, whatever your email, form or upload needs.
- 02
Add your audio
Drop in an MP3, M4A, WAV or other audio file. It's uploaded privately over TLS and deleted after 1 hour.
- 03
Download it
We pick the bitrate that lands the file near your target, re-encode it, and hand it back, never bigger than the original.
Common targets: 5 MB · 10 MB · just smaller.
Common questions
What sizes can I target?+
Any size in MB. Use the presets (3/5/10/20 MB) for common email and upload limits, or type your own. We auto-tune the bitrate to land near it while keeping the audio clear.
Will it still sound okay?+
We tune the bitrate to the audio's length, so short clips stay crisp. Spoken-word audio compresses especially well; long music tracks share the budget across more minutes.
Is my audio uploaded anywhere?+
It's uploaded over an encrypted connection, compressed on our server, and both the upload and the result are deleted after 1 hour. No account, no watermark.
What if it can't hit the target?+
We give you the smallest listenable version and tell you it's just over, for a long track, trim it or pick a larger target.
Which formats work?+
MP3, M4A, AAC, WAV, OGG, FLAC and most common audio files. MP3 comes back as MP3.