🎧 Runs 100% in your browser — nothing to install

Master Your Track,
Instantly

An online mixing & mastering engine that's fast, easy to use, and sounds incredible. Drop in your song and get a loud, polished, release-ready master in seconds.

No sign-up · No upload to a server · Your files never leave your device

Everything you'd expect from a pro mastering suite

5-Band EQCompressorStereo Widener Analog WarmthBrickwall LimiterSpectrum Analyzer

Before & After

Toggle between the raw mix and the mastered version. Same song — louder, wider, and clearer.

🎵 Demo loop
Loudness

Upload any song to hear it mastered instantly — nothing is uploaded to a server.

Master in three steps

From raw recording to finished master — no audio-engineering degree required.

1

Drop your audio

Drag in MP3, WAV, FLAC, OGG, M4A — or load several tracks and mix them together on the timeline.

2

Pick a style

Choose a mastering style like Universal, Warm, Club or Bright — then fine-tune EQ, compression and width to taste.

3

Export & release

Render offline and download studio-quality WAV (16/24-bit) or MP3 up to 320 kbps. Ready to upload anywhere.

A full studio in your browser

Professional processing built on the Web Audio API — real-time, and completely private.

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Multitrack mixing

Layer unlimited tracks with per-track volume, stereo pan, mute and solo. Slide clips along the timeline to arrange them in time.

One-click mastering

Nine hand-tuned mastering styles apply EQ, compression, width and warmth together — instant, professional results.

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Full manual control

5-band EQ, compressor with GR metering, Mid/Side stereo widener, analog saturation, output gain and a brickwall limiter.

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Real-time metering

Live spectrum analyzer, L/R peak meters and a clip indicator so you always know exactly how your master sounds.

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Any format in, pro format out

Decodes any audio your browser supports. Exports WAV 16/24-bit or MP3 192/320 kbps at 44.1 or 48 kHz.

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100% private

All processing happens on your machine. Nothing is ever uploaded — your music stays yours.

Mastering styles for every genre

Start from a style, then make it your own.

Simple pricing

StudioMix Pro is free to use. Donations help keep it online for everyone.

Free access
$0/forever
  • Unlimited tracks & mixing
  • All 9 mastering styles + full controls
  • Real-time A/B preview in your browser
  • Downloads & exports included during launch
Open Studio

Prefer to just create? Open the studio and keep making music. Support is optional and appreciated.

More free StudioMixPro tools

Same private, in-browser engine — no upload, no sign-up.

🎤

RemoverPro — AI Vocal Remover ↗

Separate vocals & instrumental with a GPU-accelerated AI model, isolate the acapella, and trim audio — free & private. Exports clean WAV.

🎬

Lyrics Sync Studio — Lyric Videos ↗

Load your video and lyrics, sync every line, preview subtitle styles, and export a lyric video locally from your browser.

Ready to hear your track at its best?

Drop in a song and get a release-ready master in seconds.

Upload a Track