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I built a free browser tool for audio mastering. No…

I built a free browser tool for audio mastering. No install, no sign-up, processes entirely locally

Mastering tracks before putting them on YouTube or Spotify is always kind of a pain.

Sure, there are free mastering options out there, but I wanted something that looks better, is easier to use, and gives me more control for my own workflow.

So I just made one myself, and it does the job nicely.

MSTRMND https://mstr-mnd.vercel.app/  akes your audio files and normalizes/masters them to consistent loudness.

Here's how it works.

* **100% Local Processing.** Your files are never uploaded to any server. Everything runs in your browser. (If it's too slow, sorry, blame your CPU)
* **Batch Processing.** Drag & drop up to 50 tracks.
* **Multithreading.** It uses parallel web workers, so the processing speed depends on your CPU's multi-core power.
* **A/B Testing.** Toggle between original and mastered tracks instantly without lag.
* **6 Presets.** *Transparent* is enough for most cases.
* No subscriptions, no sign-ups, no paywalls, nothing.

Export as WAV or MP3 (it preserves your metadata/cover art), or download everything at once as a ZIP file.

Originally built this just for myself, but figured I'd share it. Feel free to use it. Thanks.

https://mstr-mnd.vercel.app/ https://www.google.com/url?sa=E&q=https%3A%2F%2Fmstr-mnd.vercel.app%2F
#entertainment
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1,000 mlx total
$0  total
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