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SPX Compressor

Reduce SPX file size by re-encoding at a lower bitrate — entirely in your browser.

2 cores · low tier

Drop a file here or click to select

Format will be auto-detected

About SPX

SPX

Speex Audio

Open-source speech codec designed for voice over IP. Provides good speech compression at very low bitrates.

Best for

VoIPVoice chatSpeech compressionPodcasts

Advantages

  • + Optimized for speech
  • + Open source
  • + Very low bitrate

Limitations

  • Superseded by Opus
  • Speech only
  • Declining usage