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Convert audio fileslocalement

100% local
No storage
Sovereign
Free

Understand

How does FileVert audio converter work?

FileVert audio converter processes your files directly in the browser. No audio is sent to any server.

  • 100% local processing on your device
  • No transfer to our servers
  • Batch compression and conversion

Why prepare a demo before sending?

  • Online converters upload your files to their servers before conversion
  • An unreleased track should not pass through a third-party cloud
  • Metadata (software, dates, tags) can reveal your setup or identity
  • Recipients (label, client, A&R) want to listen right away, not unzip a folder
  • Streaming platforms publish: that is not a private, ephemeral send

What changes everything

Prepare your demos and audio tracks before sending. In bulk, in your browser.

The challenge

Heavy demo, risky cloud

A 200 MB WAV exceeds email limits, and online converters upload your masters to their servers before converting.

WAV 186 Modémo EPcloud ✗
Batch

Whole EP or folder in one pass

Up to 200 files and 2 GB: drop the folder, convert every track to the same format, download a ZIP or transfer directly.

demo-ep/
01-intro.wav
02-verse.wav
03-hook.wav
04-outro.wav
playlist.m3u
×12 · 2 Go
Formats

MP3, M4A, OGG, WAV, AIFF or FLAC for the whole batch

Harmonize a mixed catalogue to one target format. Metadata (author, software, dates) is stripped on export.

MP3M4AOGGWAVFLAC

1 format cible

tout le lot, métadonnées purgées

Bitrate

Light for sending, clear for listening

Set bitrate (64 to 320 kbps) for your use case: vocal draft, label demo or podcast. Smaller files, speech stays intelligible.

Avant

186 Mo

Après

18 Mo

192 kbpsécoute nette
Video → audio

Extract audio from MP4 or MOV

Interview, live set or video capture: get the audio track only as MP3, M4A or another format, without re-importing elsewhere.

interview.mp4

piste vidéo ignorée

interview.mp3

audio seul

Explore flow

Convert here, let them listen next

Files stay on your machine until you send. Transfer in Explore mode: the recipient listens in a playlist, no forced download.

Ready on your device

Audio player in Explore mode

Playlist and direct listening for the recipient

Transfer these files →

Guide: ephemeral audio playlist →

After the tool

Send the result: standard mode or Explore mode

When your file is ready on your device, send it with FileVert Transfer from the built-in send action. Choose whether the recipient downloads immediately (standard) or previews first in the browser without a silent local copy (Explore mode).

Standard mode

Secure link: the recipient downloads the file in the usual way. Best for final deliverables, archives and heavy attachments.

Guide: send very large files

Explore mode

Offer in-browser playback (tracks, playlist) before downloading the files.

Guide: ephemeral audio playlist

Formats supportés pour la conversion audio

Le convertisseur audio FileVert couvre les formats les plus demandés et permet des conversions rapides en local, sans upload.

EntréeSortieUsage
MP4 / MOV / WEBMMP3 / M4A / OGG / WAV / AIFF / FLACExtraire l’audio d’une vidéo
M4A / AACMP3 / WAV / AIFF / FLAC / OGGRendre le fichier compatible partout
WAV / FLAC / AIFFMP3 / M4A / OGGRéduire le poids sans perdre la lisibilité
AIFF / AIFMP3 / M4A / WAV / FLAC / OGGInteropérabilité Mac, DAW et envoi léger
OGG / OPUSMP3 / M4A / WAV / AIFFPartager sur des plateformes plus universelles
PRIVACY

Privacy and digital sobriety

No cloud upload

No audio file retention

Local browser-side processing

0 data stored

All audio processing is done locally on your machine.

Our other tools

Prepare your files with our other free, local tools.

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Compress and optimize your PDF documents instantly.

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Image Upscaler

Upscale x2 or x4 without loss of sharpness for your visuals.

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Vectorize an image, a logo

Vectorize JPEG, PNG, WebP, AVIF, GIF, BMP and SVG to SVG locally, with editable layers and pro exports.

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Redact and anonymize PDF and photos

Face blur, PII redaction, EXIF and PDF metadata strip. 100% local — work on a copy, keep the original.

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Frequently asked questions

Everything you need to know about FileVert audio converter

Where are my audio files processed?

All processing happens locally in your browser. No audio file is sent to a server.

Which audio formats can I convert?

Input: MP3, M4A, AAC, WAV, AIFF, FLAC, OGG, OPUS and MP4, MOV, MKV, WEBM video. Output: MP3, M4A, OGG, WAV, AIFF and FLAC.

Can I convert several audio files at once?

Yes. Up to 200 files and 2 GB per session, whole folders included. ZIP download or direct transfer to FileVert.

Is metadata stripped on export?

Yes. Author, software, dates and ID3 tags are removed on conversion. Useful for demos that should not reveal your studio setup.

How do I send a demo so people can listen without downloading?

Convert and compress here locally, then transfer in Explore mode. The recipient opens the link and listens in a built-in player (playlist, m3u), no forced download.

How do I set quality and bitrate?

Use the quality slider: the displayed bitrate (64 to 320 kbps) adapts to the chosen format. Ideal to lighten a demo while keeping clear playback.

How do I turn MP4 into MP3?

Drop your MP4 (or MOV, WEBM), choose MP3 as output. The video track is ignored, only audio is extracted, 100% local.

Do I need an account?

No. The tool is free and available immediately, no sign-up required.

FileVert local audio converter: convert, compress and prepare audio files before transfer, with no server upload.