100% in your browser

Free Online Audio Mastering

Master a finished mix in your browser with manual peak normalization, three-band EQ, and a final limiter, then compare and export a WAV.

Upload Your Mix to Master

Drop a finished mix here to start mastering or import from:

Manual Mastering Chain

Normalize first, shape the tone, then control the final peak.

01

Normalize

Raise or lower the mix to a predictable peak before tonal processing.

02

Three-band EQ

Make broad musical adjustments instead of narrow corrective cuts.

03

Limiter

Catch the loudest peaks and keep the exported master below the ceiling.

Source Peak--
Source RMS--
Normalize Gain--
Master Peak--
Upload a finished mix to start mastering.

Make deliberate mastering changes

Use a short, visible signal chain so every change has a clear purpose and can be reversed before export.

Predictable final level

Choose a target peak and see how much gain normalization adds or removes.

Broad tonal control

Balance lows, mids, and highs with musical controls designed for full mixes.

Protected output peaks

Set the limiter ceiling to keep the exported master below your chosen maximum.

Original and master comparison

Listen to both versions before downloading the rendered WAV.

How to master an audio mix

Start with small changes and compare often. A balanced mix usually needs less processing.

  1. 1

    Upload the finished mix

    Use a stereo mix with enough headroom and no clipping.

  2. 2

    Set normalize and input gain

    Choose the target peak, then add input gain only when the mix still needs more level.

  3. 3

    Adjust the three-band EQ

    Make small low, mid, or high changes to improve balance across the whole track.

  4. 4

    Set the limiter ceiling

    Choose the final peak ceiling and release, then render the master.

  5. 5

    Compare and export

    Listen to the original and mastered versions, revise settings if needed, and download the WAV.

Useful for finished mixes and spoken productions

The manual chain works for music, podcast episodes, DJ edits, and other completed stereo files.

Music demos

Create a louder, more balanced listening copy without changing the original mix file.

Podcast episodes

Tighten final peaks and make broad tonal adjustments before publishing.

DJ edits

Bring exported edits to a controlled peak and check their tonal balance.

Client previews

Prepare a clear review copy and compare it directly with the unmastered mix.

Get a cleaner master

Use the controls conservatively and solve major balance problems in the mix first.

Leave headroom in the mix

Avoid uploading a file that is already clipped or heavily limited.

Keep EQ moves small

Changes of one or two decibels are often enough across a complete mix.

Compare at a comfortable volume

A louder result can seem better at first, so listen for balance and clarity as well.

Render again after every change

The comparison player always reflects the most recently rendered settings.

Audio Mastering Questions

Is this automatic AI mastering?

No. You control normalization, input gain, three EQ bands, limiter ceiling, and release manually.

No. Decoding, processing, comparison, and WAV creation run locally in the browser.

Upload a finished mix or completed spoken program. Fix individual instrument or voice balance before mastering.

WAV keeps the rendered result uncompressed and avoids adding another lossy encoding step.

No. Lower the mix level and export again before mastering if the source already clips.