Audio Compressor
Even Levels, Cleaner Sound
Smooth out the difference between loud and quiet parts of a recording. Set threshold, ratio and makeup gain, then download a consistent, broadcast-ready track.
What you control
- Threshold-60 to 0 dB
- Ratio1:1 to 20:1
- Makeup gain0 to +24 dB
- OutputWAV (lossless)
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How to compress audio
- 01Add your audioDrop in an MP3, WAV or OGG file from your device.
- 02Tune the compressorSet the threshold, ratio and makeup gain to taste.
- 03Download the resultGet a smoother, more consistent WAV file instantly.
Features
Three simple controls
Threshold, ratio and makeup gain cover most vocal and music needs without complexity.
Tames loud peaks
Loud moments get pulled down so they stop drowning out the rest of the track.
Lifts quiet passages
Makeup gain brings the overall level back up after compression evens things out.
No uploads
Compression is applied by your browser using the Web Audio API - nothing leaves your device.
Lossless output
The result is a full-quality WAV file you can use anywhere.
Works offline after load
Once the page has loaded, processing continues even if your connection drops.
Built for leveling audio
Why compress audio
Consistent listening volume
No more reaching for the volume knob every time the speaker gets loud or quiet.
Polished recordings
Even a rough voice memo sounds more professional after gentle compression.
Stays private
Confidential recordings are processed inside your own browser sandbox.
No cost or limits
There is no daily quota, signup wall, or paid tier between you and your file.
What a compressor actually does to your sound
A compressor reduces the gap between the loudest and quietest parts of a recording. When the signal crosses a set threshold, the compressor turns it down by a ratio - a 3:1 ratio means 3 dB of extra loudness only becomes 1 dB. Then makeup gain lifts everything back up, so quiet parts get more audible without the loud parts clipping.
The trick is not to overdo it. Too much compression squeezes the life out of a recording, making it sound flat and unnatural. Gentle settings - a moderate threshold and a low ratio - even things out while keeping the performance intact.
For voice, start with a threshold around -20 dB and a ratio around 3:1, then add a little makeup gain. For music, use a lighter touch so the dynamics that make the performance expressive are preserved.
“I compress student recordings lightly so their volume stays even during playback.”
Tariq Ali - Voice coach
“A gentle 3:1 ratio with 3 dB of makeup gain makes every guest sound equally clear.”
Elena Petrova - Podcast host
“No uploads means I can safely compress unmastered client tracks without worry.”
Marcus Reid - Home studio owner
Frequently asked questions
What does an audio compressor do?
It reduces the gap between loud and quiet parts of a recording, making the overall volume more consistent.
What is the threshold?
The level at which compression kicks in. Signals above the threshold are turned down; signals below it are left alone.
What is the ratio?
How strongly signals above the threshold are reduced. A 3:1 ratio means 3 dB over the threshold becomes only 1 dB.
What is makeup gain?
A boost applied after compression to bring the overall level back up after loud peaks have been reduced.
Which formats can I compress?
MP3, WAV and OGG inputs are supported, and the result downloads as a lossless WAV file.
Are my files uploaded anywhere?
No. Compression runs entirely in your browser, so your audio never leaves your device.