Electronic Arts'Interchange Format Files (.iff)
.iff file signature | application/octet-stream
Electronic Arts'Interchange Format Files (IFF)format.
Magic Bytes
Offset 0
46 4F 52 4D 49 4C 42 4D
Sources: Wikipedia
All Known Signatures
15 signature variants are documented for .iff files across multiple sources.
| Hex Signature | Offset | Sources |
|---|---|---|
| 46 4F 52 4D 49 4C 42 4D | 0 | Wikipedia |
| 46 4F 52 4D 38 53 56 58 | 0 | Wikipedia |
| 46 4F 52 4D 41 43 42 4D | 0 | Wikipedia |
| 46 4F 52 4D 41 4E 42 4D | 0 | Wikipedia |
| 46 4F 52 4D 41 4E 49 4D | 0 | Wikipedia |
| 46 4F 52 4D 46 41 58 58 | 0 | Wikipedia |
| 46 4F 52 4D 46 54 58 54 | 0 | Wikipedia |
| 46 4F 52 4D 53 4D 55 53 | 0 | Wikipedia |
| 46 4F 52 4D 43 4D 55 53 | 0 | Wikipedia |
| 46 4F 52 4D 59 55 56 4E | 0 | Wikipedia |
| 46 4F 52 4D 46 41 4E 54 | 0 | Wikipedia |
| 46 4F 52 4D 41 49 46 46 | 0 | Wikipedia |
| 43 41 54 20 | 0 | Gary Kessler |
| 46 4F 52 4D | 0 | Gary Kessler |
| 4C 49 53 54 | 0 | Gary Kessler |
Extension
.iff
MIME Type
application/octet-stream
Byte Offset
0
Risk Level
Safe
Validation Code
How to validate .iff files in Python
def is_iff(file_path: str) -> bool:
"""Check if file is a valid IFF by magic bytes."""
signature = bytes([0x46, 0x4F, 0x52, 0x4D, 0x49, 0x4C, 0x42, 0x4D])
with open(file_path, "rb") as f:
return f.read(8) == signatureHow to validate .iff files in Node.js
function isIFF(buffer: Buffer): boolean {
const signature = Buffer.from([0x46, 0x4F, 0x52, 0x4D, 0x49, 0x4C, 0x42, 0x4D]);
return buffer.subarray(0, 8).equals(signature);
}How to validate .iff files in Go
func IsIFF(data []byte) bool {
signature := []byte{0x46, 0x4F, 0x52, 0x4D, 0x49, 0x4C, 0x42, 0x4D}
if len(data) < 8 {
return false
}
return bytes.Equal(data[:8], signature)
}API Endpoint
/api/v1/iff
curl https://filesignature.org/api/v1/iff
See the full API documentation for all endpoints and parameters.
Frequently Asked Questions
What is a .iff file?
A .iff file is a Electronic Arts'Interchange Format Files file. Electronic Arts'Interchange Format Files (IFF)format.
What are the magic bytes for .iff files?
The magic bytes for Electronic Arts'Interchange Format Files files are 46 4F 52 4D 49 4C 42 4D at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.
How do I validate a .iff file?
To validate a .iff file, read the first bytes of the file and compare them against the known magic bytes (46 4F 52 4D 49 4C 42 4D) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.
What is the MIME type for .iff files?
There is no officially registered MIME type for .iff files. Systems typically use application/octet-stream as a generic fallback when handling this format.
Is it safe to open .iff files?
Electronic Arts'Interchange Format Files (.iff) 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.