.aiff — Audio Interchange File Format
A high-quality uncompressed or compressed audio container common in older Mac and pro-audio workflows.
About this format
AIFF is a classic audio interchange format associated with Apple and professional audio workflows. Plain AIFF is often uncompressed PCM, so files can be large.
Use AIFF for editing or interchange when a tool asks for it. Use FLAC for lossless storage or AAC/Opus for smaller listening copies.
Real-world samples & file sizes
AIFF samples should be judged in the sizes people actually receive, upload, or export. These reference cards show the common shapes and settings to check before choosing a conversion target.
spoken audio
Checks speech clarity and low-bitrate behavior.
music sample
Checks stereo image, transients, and codec artifacts.
small export
A practical range for sharing or streaming constrained files.
source copy
Use when quality preservation matters more than size.
Reference dimensions are platform-style targets. Compatibility and format facts are verified from the linked online sources below.
Pros
- +High-quality PCM workflows
- +Strong pro-audio history
- +Simple editing source
Cons
- −Large files when uncompressed
- −Less convenient than FLAC for storage
- −Less common for web playback
AIFF vs other formats
| vs | Size | Quality | Note |
|---|---|---|---|
| WAV | Similar for PCM | Similar when uncompressed | WAV is more common on Windows; AIFF is Mac-associated. |
| FLAC | FLAC is smaller | Both can preserve quality | FLAC is better for storage and sharing. |
Where it works
- macOS native
- Windows via media apps
- Linux via audio players
- Not a common web audio delivery format
- Logic Pro
- Pro Tools
- Audacity
- VLC
- FFmpeg
Related tools
Frequently asked questions
- Is AIFF lossless?
- Standard AIFF with PCM audio is uncompressed and lossless. AIFF-C can use compression.
- Should I use AIFF for web audio?
- No. Use AAC, Opus, MP3, or another browser-friendly delivery format.
Sources
- Library of Congress file format descriptions - archival format descriptions and sustainability notes
- Apple AIFF overview in legacy docs - Apple audio file format specification PDF