Adjust Volume

Louder. Quieter.

Your call.

Runs in your browser. Your recordings never leave your device.

Drop an audio file here

.mp3 .wav .m4a .ogg .aac .flac · tap to browse

Adjusted. Volume dialled.

✓ Fwipped
Never left your device
No upload
Works offline
We never hear your audio

Need to adjust volume on hundreds of files? The offline bundle handles batches with no size limit. $99 once.

Get Bundle →
// How it works

Three steps. Zero uploads.

01
Drop
Drag your audio file onto the page. MP3, WAV, M4A, OGG, FLAC. It stays on your device.
02
Adjust
Use the slider to boost or reduce volume, or normalise to peak loudness.
03
Compare
Listen to before and after. Download the adjusted file.
// Why this is different

Your audio never leaves your machine.

Most online volume adjusters upload your audio to a server. fwip processes everything in your browser — your recordings stay private.

fwip works differently. The processing engine runs entirely in your browser. Your audio is read from your device, processed on your CPU, and the result is saved back to your device. No server is involved. We literally cannot see your file.

No server processing

Everything runs on your device using WebAssembly. Your file never touches a network.

No account required

Drop a file. Get a result. No sign-up, no email, no password.

No subscription

Free in the browser. $99 once for the offline bundle. That's it. Forever.

Works offline

The desktop version works with no internet connection at all.

// How fwip compares

fwip vs the rest.

fwipMP3LouderAudacityAdobe Audition
Upload requiredNoYesNoNo
Account requiredNoNoNoYes
Price$15 / toolFreeFree/yr
Files leave deviceNeverAlwaysNeverNo
Works offlineYesNoYesYes
Batch processingOffline bundleNoYesYes
// Questions

Frequently asked.

How do I make my audio louder without distortion?▾
Use the normalise option, which analyses the entire file and brings the peak volume to a standard level without clipping. For manual adjustment, stay under +10dB to avoid distortion.
What is audio normalisation?▾
Normalisation analyses your audio and adjusts the volume so the loudest peak reaches a target level. fwip uses the EBU R128 loudnorm standard (−16 LUFS) which is used by podcasts, YouTube, and streaming platforms.
Will boosting volume cause clipping?▾
Large boosts (+15dB or more) can cause clipping on loud passages. The normalise option avoids this by intelligently adjusting the dynamic range. For manual boosts, listen to the preview before downloading.
Can I adjust volume without re-encoding?▾
Volume adjustment requires modifying the audio data, so re-encoding is necessary. fwip uses high-quality encoding settings to minimise any quality impact.
What formats are supported?▾
MP3, WAV, M4A, OGG, AAC, and FLAC as input. Output is available as MP3 or WAV.
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$15
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  • No file size limit
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