Make an audio file smaller
Recordings of people talking are almost always ten times bigger than they need to be. Drop yours and see what it weighs at the right bitrate.
Your file never leaves this tab: it's processed by your own browser and nothing is uploaded to us. You can go offline once the page has loaded and it still works.
- MP3
- WAV
- M4A
- AAC
- OGG
- FLAC
- OPUS
A voice recorder app, a WAV export or a phone memo can easily produce 60 MB for twenty minutes of someone talking. That size isn't quality, it's a default: those files are usually recorded in stereo, at a bitrate meant for music, capturing a range of frequencies a human voice never reaches. Bring both numbers down to what speech actually needs and the same recording sits at three or four megabytes with nothing audibly different about it.
The two dials that matter are here. The bitrate is how much detail each second gets to keep. Mono is the bigger one and the one nobody thinks of: an interview recorded in stereo is the same voice written twice, so folding it into one channel halves the file before the bitrate does anything at all.
What we handle that others don't
- Mono in one click, which is the single biggest saving on any recording of people talking and the one every other compressor buries.
- The before and after side by side, so you can try 96, look at the number, and try 64 if you feel like it.
- It takes uncompressed WAV, which is where the real savings are: a WAV usually drops by 95%.
- The file is never uploaded, so a two-hour meeting recording doesn't have to leave your laptop to be made smaller.
How it works
- 1
Drop the audio
MP3, WAV, M4A, FLAC, OGG — anything, including the giant WAV your recorder made.
- 2
Choose how small
96 kbps for speech, 128 if there's music in there. Mono halves it again.
- 3
Download it
You'll see the before and after in megabytes, and how much you saved.
Questions
And if what you have is the video?
Upload it and you'll get the transcript with timestamps, the speakers separated by name and a summary with the key points. First 45 seconds free, no account needed.