Audio Interchange File (.aiff)

.aiff file signature | audio/x-aiff

Audio Interchange File Format

Safe

Magic Bytes

Offset 0


              46 4F 52 4D 00

Sources: Apache Tika, Gary Kessler

All Known Signatures

5 signature variants are documented for .aiff files across multiple sources.

Hex Signature	Offset	Sources
46 4F 52 4D 00	0	Apache Tika, Gary Kessler
46 4F 52 4D 2E 2E 2E 2E 41 49 46 46	0	Apache Tika
46 4F 52 4D 2E 2E 2E 2E 41 49 46 43	0	Apache Tika
46 4F 52 4D 2E 2E 2E 2E 38 53 56 58	0	Apache Tika
46 4F 52 4D 41 49 46 46	0	Wikipedia

Extension

.aiff

MIME Type

audio/x-aiff

Byte Offset

Risk Level

Safe

Validation Code

How to validate .aiff files in Python

Python

def is_aiff(file_path: str) -> bool:
    """Check if file is a valid AIFF by magic bytes."""
    signature = bytes([0x46, 0x4F, 0x52, 0x4D, 0x00])
    with open(file_path, "rb") as f:
        return f.read(5) == signature

How to validate .aiff files in Node.js

Node.js

function isAIFF(buffer: Buffer): boolean {
  const signature = Buffer.from([0x46, 0x4F, 0x52, 0x4D, 0x00]);
  return buffer.subarray(0, 5).equals(signature);
}

How to validate .aiff files in Go

func IsAIFF(data []byte) bool {
    signature := []byte{0x46, 0x4F, 0x52, 0x4D, 0x00}
    if len(data) < 5 {
        return false
    }
    return bytes.Equal(data[:5], signature)
}

API Endpoint

GET /api/v1/aiff


              curl https://filesignature.org/api/v1/aiff

See the full API documentation for all endpoints and parameters.

Frequently Asked Questions

What is a .aiff file?

A .aiff file is a Audio Interchange File file. Audio Interchange File Format

What are the magic bytes for .aiff files?

The magic bytes for Audio Interchange File files are 46 4F 52 4D 00 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.

How do I validate a .aiff file?

To validate a .aiff file, read the first bytes of the file and compare them against the known magic bytes (46 4F 52 4D 00) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.

What is the MIME type for .aiff files?

The primary MIME type for .aiff files is audio/x-aiff.

Is it safe to open .aiff files?

Audio Interchange File (.aiff) files are generally safe to open. They are classified as low risk because they primarily contain data rather than executable code. However, always ensure files come from a trusted source.