Audio Compressor Online
Even out the loud and quiet parts of any audio file right in your browser. Pick a preset for more consistent, louder-feeling podcasts, vocals, and music — no sign-up, and your file is never uploaded.
How to Compress Audio Online
No threshold math, no metering — drop, pick, download.
Drop Your Audio
MP3, WAV, M4A, FLAC, OGG, or AAC up to 200 MB. It decodes right in the browser and shows you the waveform.
Pick a Preset
Choose Light, Medium, Heavy, or Voice. Voice is tuned for podcasts and narration; Medium is a safe all-rounder.
Compress & Download
Hit Compress, listen to the evened-out result in the page, then download a 192 kbps MP3 — no watermark.
Why Notevibes Audio Compressor
Tuned presets, transparent dynamics, no knobs to learn.
One-Click Presets
Light, Medium, Heavy, and Voice are tuned for real material. Pick one and compress — no threshold, ratio, or attack knobs to wrestle with.
Tames Peaks, Lifts Quiet
Loud moments above the threshold are turned down, then makeup gain brings the whole signal back up — so the result feels steady and louder without spikes.
Podcast-Ready Dynamics
The Voice preset keeps spoken word at a consistent, listenable level from the first word to the last, even across a long episode.
Never Uploaded
Compression runs in your browser with the Web Audio API. Your file never leaves your device — there is nothing to delete because nothing was sent.
Clean MP3 Output
The compressed result previews in the page, then downloads as a 192 kbps MP3 — no watermark, no ads, no attribution required.
Free, Anywhere
No sign-up, no daily limits, no watermark. Works on phones, tablets, and laptops in any modern browser.
Nothing to Upload, Nothing to Leak
The compression happens on your own device. Your recording never touches a server — which is a stronger promise than any “we delete it later”.
No Upload
Compression runs on your own device
No Account
Start compressing immediately
Works Offline
Once the page loads, no connection needed
What People Compress
One tool for every “too loud, then too quiet” recording.
Podcast Vocals
Keep every word at a steady level across a long episode
Voiceover
Even out narration so soft and loud lines sit together
Livestream Levels
Control sudden peaks so viewers aren't blasted mid-scene
Audiobook Narration
Smooth dynamics for comfortable long-form listening
Mix Glue
Add cohesion so a rough mix feels tight and consistent
Gaming Clips
Balance gunfire, voice chat, and quiet moments in one pass
Steady Levels Without a Mixing Desk
You know the recording: one moment the speaker leans in and it’s blasting, the next they trail off and you can barely hear them. Riding a volume fader by hand is tedious, and desktop compressors bury the fix under threshold, ratio, attack, and release knobs. This tool skips all of that — four presets tuned for real material, one tap, and the loud and quiet parts sit together.
Presets that already know the settings
Voice is dialed in for podcasts and narration. Light adds gentle polish to music, Medium is the safe all-rounder, and Heavy clamps down hard on noisy or very dynamic material. Each one carries a sensible threshold, ratio, attack, release, and makeup gain, so you get a professional dynamics curve without touching a single number.
Louder-feeling, not just louder
Compression pulls the peaks down and lifts the average, so audio feels present and consistent — different from a straight volume change. If your file is simply too quiet, the volume booster or the audio normalizer raise the level without reshaping dynamics. And when you just need a hard ceiling so nothing clips on export, reach for the audio limiter.
Private because it never leaves
Interviews and voice recordings are exactly the files you don’t want on someone else’s server. Here the compression runs on your own device — the same Web Audio engine that powers the full Notevibes editor. Because there’s no server doing the work, there’s nothing to meter: no watermark, no daily cap, no sign-up, files up to 200 MB.
When you want the knobs after all
The presets cover most jobs, but sometimes you need to dial threshold and ratio yourself and stack compression with EQ, limiting, and effects. That’s the online audio editor, where you can process whole tracks in one pass and fine-tune every stage.
Need Full Control?
The full Notevibes editor stacks compression with EQ, limiter, bass, treble, and effects — and lets you fine-tune threshold, ratio, attack, and release on whole tracks in one pass.
Free to try · No credit card required
Related Audio Tools
More free AI audio tools from Notevibes — same engine, no sign-up.
Audio Normalizer
Boost audio to peak volume without clipping.
Audio Volume Booster
Increase volume by +3 to +12 dB.
High-Pass Filter
Cut low-frequency rumble below a chosen frequency.
Low-Pass Filter
Cut high-frequency hiss and harshness above a cutoff.
Online Audio Editor
Multi-track browser editor with every tool built in.
MP3 Editor
Full MP3 editor with timeline, effects, and export.
Audio Compressor FAQ
What does an audio compressor do?
It narrows the gap between the loudest and quietest parts of your audio. Peaks above the threshold are turned down, then the whole signal is brought back up with makeup gain — so the result feels more consistent and louder overall without harsh spikes.
Which preset should I pick?
Voice is tuned for podcasts and narration. Light adds gentle polish to music, Medium is a solid all-rounder, and Heavy clamps down hard for noisy or very dynamic material. When unsure, start with Medium.
Will compression make my audio louder?
Yes. By taming peaks and adding makeup gain, compression raises the average level, so your audio feels noticeably louder and more present even though the true peak is controlled.
Is the audio compressor free?
Yes. Completely free with no sign-up, no watermark, and no limits. Max file size is 200 MB.
Is my audio file uploaded to a server?
No. The compressor runs entirely in your browser using the Web Audio API. Your file never leaves your device — nothing is uploaded, stored, or analyzed.
What audio formats are supported?
MP3, WAV, M4A, FLAC, OGG, and AAC. Anything your browser can decode via the Web Audio API will load. The processed output is exported as a 192 kbps MP3.
Does it work on mobile?
Yes. It runs on Chrome, Firefox, Safari, and Edge on both desktop and mobile. Tap to upload, pick a preset, tap Compress.