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What is OGG?

Ogg Vorbis

OGG (Vorbis) is an open-source lossy audio format that outperforms MP3 at similar bitrates. It's a favorite for open-source projects, gaming, and Wikipedia audio thanks to being completely royalty-free.

Convert OGG filesAll audio conversions

History of OGG

OGG (the container) appeared in 2002 from the Xiph.Org Foundation, designed as a completely free, open multimedia format. The Vorbis audio codec inside OGG was a direct response to the patent restrictions on MP3 and AAC. It's used by Wikipedia, many open-source games, and Firefox/Chrome web audio.

Technical specs

Format name
Ogg Vorbis
File extension
.ogg
MIME type
audio/ogg
Category
Audio
Compression
Compressed

When to use OGG

Reach for OGG when you need open-source software and games, web audio in firefox and chrome, wikipedia and wikimedia projects, streaming on open platforms. It excels at these scenarios because open-source and royalty-free and better quality than mp3 at low bitrates.

Pros

  • +Open-source and royalty-free
  • +Better quality than MP3 at low bitrates
  • +Good streaming support in modern browsers

When to avoid OGG

Avoid OGG when not supported by safari or ios, and limited support in legacy hardware. In those cases, look at the alternatives below.

Cons

  • −Not supported by Safari or iOS
  • −Limited support in legacy hardware
  • −Less common than MP3 or AAC

Common uses for OGG

Alternatives to OGG

For broader compatibility (especially Apple devices), MP3 or AAC are safer choices.

MP3MPEG-1 Audio Layer IIIWAVWaveform Audio File FormatFLACFree Lossless Audio CodecAACAdvanced Audio CodingM4AMPEG-4 AudioAIFFAudio Interchange File Format

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OGG — Frequently Asked Questions

Is OGG still used in 2026?

Yes, OGG is actively used. Open-source software and games keeps it relevant.

Can I open a OGG file on my phone?

Android yes. iPhone no — convert to MP3 or AAC.

Why is my OGG file so different in size from other files?

OGG file sizes depend on encoder settings (bitrate, resolution, quality). For smaller files, re-encode at a lower bitrate or convert to a more compressed format.

Can I convert OGG to another format for free?

Yes — Zen Convert converts OGG files to every other audio format we support, for free, in your browser. No signup, no watermark.

Is OGG open-source?

Yes — OGG is fully open-source and royalty-free. You can implement, distribute, and use it without paying any licensing fees.

What is OGG? — Ogg Vorbis Format Explained | Zen Convert