Audio Compressor (MP3)
Compressor ToolsMake audio files smaller as MP3
FreePrivateInstant
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History
All history →Audio Compressor (MP3) — at a glance
Make audio files smaller as MP3.
lecture.wav (45 MB)
Compress
lecture-compressed.mp3 (3 MB)
How to use it — step by step
Just your input — nothing to install or sign up for.
1
Add an audio file
MP3, WAV, M4A, OGG or the sound of a video.
2
Choose quality
64 kbps mono is good for speech. 128 kbps for music.
3
Press Compress
The audio is re-encoded to MP3 on your device.
4
Listen and download
Play the result, then save it.
Pro tips
Small things that make the result better.
✦For speech, 48–64 kbps mono sounds fine and is very small.
✦Music sounds best at 128 kbps or more.
Quick facts
Freeno signup, no limit
Instantresult in a moment
Privatenothing is uploaded
Any devicephone, tablet or PC
Frequently Asked Questions
Does it upload my audio?+
No. The MP3 encoder runs in your browser.
Is my data safe?+
Yes. Everything runs inside your own browser. Your text, files and images are never uploaded to any server.
Is this tool really free?+
Yes — completely free, no signup, no watermark and no usage limit.
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