AIFF (Audio Interchange File Format) is an uncompressed audio file format commonly used in professional audio and music production.
Common Uses
Mac audio editing
Professional music
Lossless audio
AIFF Conversion FAQ
What is an AIFF audio file?
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AIFF is a lossless audio format — every sample is preserved bit-perfectly. AIFF is ideal for archival masters, audio editing, and any workflow that may re-encode the audio multiple times without accumulating compression artifacts. AIFF is a first-class Apple audio format and is the default for many iOS apps including Voice Memos and the Music app. AIFF stores uncompressed big-endian PCM — the Apple-side equivalent of WAV, with the same bit-for-bit fidelity.
What does it mean that AIFF is lossless?
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That the decoded audio is bit-for-bit what went in. Nothing is thrown away on the assumption you will not hear it, so an AIFF can be re-encoded, edited and re-saved indefinitely without accumulating the artefacts that stack up in lossy formats. The price is size — several times a compressed equivalent — which is why lossless is the right choice for masters and the wrong one for a phone full of music. AIFF is the studio interchange format on macOS, handles metadata better than plain WAV, and imports into Logic and Pro Tools instantly.
Why do professional tools hand back AIFF?
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Because it is built to be worked on rather than distributed. The format keeps quality and structure through repeated opens, edits and re-saves, which is what a production pipeline needs and what a delivery format explicitly trades away. The consequence is size: keep AIFF as the master and convert a copy for anyone who only needs to look at it.
Do the artist, album and cover art on my AIFF survive conversion?
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They do where the target format has somewhere to put them. AIFF carries tags and embedded artwork as part of the file, and a conversion copies over every field the destination understands. Uncompressed targets are the exception — they were specified before tagging was a normal expectation and keep almost nothing, so a library converted that way arrives as a wall of untitled tracks.
Is AIFF being phased out?
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It is not going away abruptly, but its share of new files keeps shrinking and fewer new tools bother to support it. Existing files stay readable for a long time yet. The practical position is that keeping an archive in this format is fine, while starting a new workflow in it means accepting an increasingly narrow set of software.
Can an AIFF file carry a 5.1 surround mix?
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Yes — the format handles more than two channels properly, so a surround mix keeps its channel layout rather than being folded to stereo on the way in. Whether you hear it as surround depends on the far end: a receiver will decode all the channels, a phone will downmix at playback time regardless. Converting to a stereo-only format makes that fold permanent.
Does it matter that AIFF is over thirty years old?
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Age itself is not the problem — several formats from that era are still perfectly good, precisely because everything has had decades to implement them. What matters is what the era assumed: small files, modest processors, no network, and features nobody needed yet. Where those assumptions still fit, the format is fine. Where they do not, that is the reason to convert. AIFF is Apple’s Audio Interchange File Format from 1988, built on the same IFF chunk design as AVI’s RIFF.
Why will an AIFF file not play in my browser?
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Browsers decode a short, fixed list of audio formats and AIFF is outside it, so the file downloads instead of playing or the player simply reports an error. Desktop software with a wider codec set opens it without trouble. If the audio has to play on a web page, converting it is the fix — no player configuration will add a decoder the browser does not ship. AIFF is as large as WAV with worse support outside the Apple world, so it is a poor choice for distribution.
Is AIFF lossy or lossless?
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AIFF is lossless — the audio you encode is the audio you get back.
What should I convert AIFF to for sharing?
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For email and social-media sharing, convert AIFF to MP3 — universal playback and small file size. For high-fidelity sharing with audiophiles, convert to FLAC or WAV to preserve the original quality.
