Convert AIFF to OPUS
Turn an AIFF bounce into a tiny .opus file you can actually send to someone. It all happens locally, powered by FFmpeg running in WebAssembly.
Why convert AIFF to OPUS?
AIFF is Apple's flavor of uncompressed audio, so it piles up fast on any Mac used for music: Logic Pro bounces, GarageBand exports, and decades of sample libraries all use it. The files are every bit as large as WAV, which makes them clumsy to send or stream. Producers convert AIFF to Opus to text a rough mix to a bandmate, post a demo where upload limits apply, or move voice recordings into modern apps that prefer compact audio. Since AIFF is rare outside macOS and pro audio tools, switching to a codec that every modern browser and chat app plays natively makes the file far easier for other people to open. Just know the trade: older car stereos and some legacy players still do not understand Opus.
Quality and file size
Because AIFF holds the same uncompressed PCM as WAV, you are starting from a pristine source, which is the best position for a lossy encode. Opus will discard detail your ears are unlikely to miss; at 192 or 256 kbps the result is near transparent on most material, and few listeners can pick the copy from the source. The savings are large, since a minute of CD quality AIFF weighs around 10 MB and the Opus version lands closer to 1.5 MB. Hold on to the AIFF masters, though. Lossy conversion cannot be undone, and Logic will always want the full resolution file for further editing.
AIFF to OPUS: common questions
Will Logic Pro open the .opus file?
Not reliably. Opus support in DAWs is patchy, which is one more reason to keep your AIFF originals. Treat the Opus copy as a delivery format for sharing and playback, not as a session file.
How much space will I save?
A lot. AIFF stores uncompressed audio at roughly 10 MB per minute, while Opus typically needs 1 to 2 MB per minute at high quality settings. A 50 MB bounce shrinks to a size most chat apps take without complaint.
Does my session audio get uploaded?
Never. The conversion runs entirely inside your browser, so unreleased mixes and demos stay on your machine. Nothing is uploaded, and we cannot hear, store, or train on audio that never reaches us.
Is AIFF to Opus the same as WAV to Opus?
Effectively, yes. AIFF and WAV carry identical uncompressed PCM in different containers, so the quality outcome and the size savings are the same either way.
Who makes this?
We're the small team behind Xport Studio, a private, fully offline app for AI vocals, stems, and mastering. These free tools are side experiments we wanted to share. No upsell, but if you're curious about the bigger thing, take a look.