Powerful Audio Tools

Everything you need to convert, edit, and merge your audio files — all in your browser.

Audio Converter
Convert audio files between formats with precision. Support for MP3, WAV, FLAC, OGG, AAC, and more. Adjust bitrate, sample rate, and channels to match your needs.
  • 20+ audio formats
  • Batch conversion
  • Quality control
  • Metadata preservation
Audio Joiner
Merge multiple audio files into a single track. Add silence gaps or crossfades between clips for seamless transitions in your podcasts, music, or audiobooks.
  • Unlimited clips
  • Crossfade effects
  • Gap insertion
  • Format flexibility
Stem Splitter
Separate any song into stems with on-device AI. Isolate vocals, drums, bass and instruments to build acapellas, instrumentals and remixes — no upload.
  • Vocals & instrumental
  • 4-stem separation
  • On-device AI
  • WAV export

More Audio Tools

Task-specific tools, all free and 100% in your browser.

Edit & effects

Vocal RemoverNoise ReducerAudio CutterAudio SplicerSpeed ChangerNightcore MakerSlowed + Reverb8D AudioReverse AudioAdd ReverbPitch ShifterBPM & Key FinderVolume BoosterVolume Leveler

Stem separation

Isolate DrumsIsolate Bass

Format converters

MP3 to WAVWAV to MP3M4A to MP3FLAC to MP3OGG to MP3AAC to MP3MP3 to FLACMP4 to MP3

Why Choose DefyAudio?

Built with privacy and performance in mind.

100% Private

All processing happens locally in your browser. Your files never leave your device.

Lightning Fast

Runs directly on your hardware for full-speed processing.

Works Anywhere

No installation required. Access from any modern browser on any device.

No Upload Needed

Your data stays with you. No cloud storage, no servers, no privacy concerns.

Ready to Get Started?

Try DefyAudio for free. Create an account to get 5 daily uses.