Do you upload my audio?
No. Processing runs locally in your browser.
Free Online MP3 Equalizer
Boost bass, cut mids, and add treble on your MP3 files — free, instant, in your browser. No upload, no sign-up.
Frequently asked questions
Is this a mastering-grade EQ?
It’s a quick 3-band EQ for speed. Advanced EQ curves and more bands are planned.
Will EQ reduce quality?
EQ requires decoding and re-encoding. Use WAV output for maximum fidelity.
What formats are supported?
Common audio inputs work, and output supports MP3/WAV/AAC.
Which browsers are supported?
For best results, use the latest Chrome / Edge with WebCodecs support.
Can I preview the result?
Yes. After processing, play the output preview and then download.