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Supports: AIF, AIFF
This walk-through is for anyone sitting on big AIFF masters who needs compact Ogg Vorbis files — game-engine sound assets, open-source or Linux audio pipelines, or web playback. By the end you will have a .ogg file at the quality and size you want, encoded in a single clean pass from the lossless original, plus a clear answer on whether Vorbis or a newer codec is the right target for your project.
.aiff or .aif file onto the page, or click "+ Add Files" to browse. You can queue several files and convert them in one batch with the same settings..ogg file. No sign-up, no watermark.Vorbis is a lossy codec, so the bitrate you pick decides both the file size and how close the result sounds to your AIFF master. The good news is that you are encoding from lossless PCM, so this is one clean generation — Vorbis performs at its best when its input has not already been through another lossy codec. A few patterns:
Roughly speaking, uncompressed CD-quality AIFF runs about 10 MB per minute, while Vorbis at 128K lands near 1 MB per minute — about a tenth of the size, though the exact ratio depends on your bitrate and the material.
.ogg reliably. If the file has to open on any Apple device with no fuss, convert to AIFF to MP3 instead.Converting to OGG Vorbis is the wrong move if your goal is a lossless archive — every Vorbis encode permanently discards data, so keep the AIFF as your master and convert to AIFF to FLAC when you need a smaller file that preserves every sample. If you are starting a brand-new project rather than feeding a legacy Vorbis pipeline, consider AIFF to Opus instead: Opus is the more modern Xiph codec and the foundation has recommended it over Vorbis since 2013, with better quality at low bitrates. And if a file simply refuses to convert, it may be a corrupted or copy-protected source — re-export it from your audio editor and try again.
Yes, some — and it is permanent, because AIFF is lossless and Ogg Vorbis is lossy. But this is the right way to make a Vorbis file: you are encoding directly from the lossless AIFF master in a single clean generation, not transcoding something that was already compressed, so the encoder performs at its best. At 96K-128K it is near-transparent for most music. Keep the original AIFF as your archival master and use the OGG copy for distribution, games, and the web.
Both are open, royalty-free Xiph codecs, but they suit different jobs. Vorbis is the right target when you are feeding an existing Vorbis pipeline — most notably game engines, since Unity, Unreal, and Godot all use Vorbis as their default compressed format, and decades of game audio assets ship as .ogg. Opus is technically newer and more efficient at low bitrates; Xiph has recommended it over Vorbis since 2013. For a fresh project with no legacy constraint, AIFF to Opus is often the better pick.
For general music, 96K-128K in Variable Bitrate mode is the sweet spot — close to transparent for most stereo material. Short game sound effects and ambience hold up well at 64K-80K, which is handy when you are packing a large sound library. Go to 160K-192K only for dense, complex audio where you can actually hear a difference; there is rarely a reason to exceed 192K for stereo.
Ogg Vorbis has had broad support in Chrome, Firefox, Edge, VLC, foobar2000, and Android for years. The historical gap was Apple: Safari only gained full Ogg Vorbis support in version 18.4, and older iTunes and iOS versions don't handle it reliably. If you need a file that opens on any device without checking compatibility first, convert to MP3 instead.
A large reduction. Uncompressed CD-quality AIFF is roughly 10 MB per minute, while Vorbis at 128K is roughly 1 MB per minute — about a tenth of the size. In our testing, a 4-minute 16-bit/44.1 kHz stereo AIFF of about 42 MB came down to roughly 4 MB as OGG Vorbis at 128K VBR. Lower bitrates shrink it further; the Specific file size option lets you target an exact size instead.
Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically a few hours after conversion — no sign-up, no watermark, never shared or made public.