Choose a file to convert. It's processed locally — never uploaded. Tip: add several files to convert them all at once.
Settings
Result appears here after you select
{ } How it works
Normalize Audio Volume works on the file you upload. Adjust the options, then select Process ▸ and it runs entirely in your browser — nothing is uploaded to a server — then shows the result in the Output panel.
Inputs
- Audio file — upload a file (audio/*); it is read locally in your browser
- Target loudness (LUFS) — choose one — -14 LUFS (streaming), -16 LUFS (podcast), -23 LUFS (broadcast) (default: -16 LUFS (podcast))
Output
A downloadable MP3 file — use the Download button in the Output panel.
{ } Common uses
- Even out a podcast episode recorded across several sessions.
- Bring a quiet recording up without making the loud parts distort.
- Match the loudness a streaming platform expects, so it does not adjust the audio itself.
{ } Limitations
- Normalising cannot undo clipping that was already recorded into the file — it changes level, not damage.
- A single pass measures and corrects at the same time, which is very slightly less exact than a two-pass analysis.
{ } FAQ
Is my data uploaded to a server?
No. Everything runs locally in your browser — your files never leave your device.
Can I process more than one file at once?
Yes — add several files and they’re all processed and downloaded together as a ZIP.
Is this tool free?
Yes — it’s completely free and needs no sign-up.
How is this different from turning the volume up?
Raising the volume scales everything until the loudest peak hits the ceiling, so one loud moment holds the whole file down. This measures perceived loudness across the file the way EBU R128 defines it — the same standard streaming platforms measure against — and corrects to a target, which is why the result sounds level rather than merely louder.