MP3 to OGG Converter

Summary

Drop an MP3 file and download an OGG Vorbis copy — FFmpeg runs entirely in your browser, nothing is uploaded.

How it works

1. Click the upload area or drag an MP3 file onto it.
2. FFmpeg.wasm loads in the background (one-time download, ~10 MB).
3. Click "Convert to OGG" — FFmpeg runs inside a browser Web Worker.
4. The transcoded OGG file is written to browser memory.
5. A download button appears — click it to save the OGG file locally.
6. Your audio data never leaves your device at any point.

Use cases

• Prepare audio assets for HTML5 web games that require OGG format.
• Convert music for Linux media players and open-source applications.
• Create OGG files for use in game engines such as Godot or Pygame.
• Archive MP3 tracks in an open, patent-free audio format.
• Provide OGG fallback audio alongside MP3 for browser compatibility.
• Convert podcast episodes or voice recordings to OGG for web embedding.
• Reduce file size compared to WAV while keeping reasonable audio quality.
• Produce OGG files for Wikipedia or other open-content platforms.

Frequently Asked Questions