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SMUS (.smus)

.smus file signature | application/octet-stream

IFFSimple Musical Score

Safe

Magic Bytes

Offset 0
46 4F 52 4D 53 4D 55 53

Sources: Wikipedia

Extension

.smus

MIME Type

application/octet-stream

Byte Offset

0

Risk Level

Safe

Validation Code

How to validate .smus files in Python

Python 
def is_smus(file_path: str) -> bool:
    """Check if file is a valid SMUS by magic bytes."""
    signature = bytes([0x46, 0x4F, 0x52, 0x4D, 0x53, 0x4D, 0x55, 0x53])
    with open(file_path, "rb") as f:
        return f.read(8) == signature

How to validate .smus files in Node.js

Node.js 
function isSMUS(buffer: Buffer): boolean {
  const signature = Buffer.from([0x46, 0x4F, 0x52, 0x4D, 0x53, 0x4D, 0x55, 0x53]);
  return buffer.subarray(0, 8).equals(signature);
}

How to validate .smus files in Go

Go 
func IsSMUS(data []byte) bool {
    signature := []byte{0x46, 0x4F, 0x52, 0x4D, 0x53, 0x4D, 0x55, 0x53}
    if len(data) < 8 {
        return false
    }
    return bytes.Equal(data[:8], signature)
}

API Endpoint

GET /api/v1/smus
curl https://filesignature.org/api/v1/smus

See the full API documentation for all endpoints and parameters.

Frequently Asked Questions

What is a .smus file?

A .smus file is a SMUS file. IFFSimple Musical Score

What are the magic bytes for .smus files?

The magic bytes for SMUS files are 46 4F 52 4D 53 4D 55 53 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.

How do I validate a .smus file?

To validate a .smus file, read the first bytes of the file and compare them against the known magic bytes (46 4F 52 4D 53 4D 55 53) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.

What is the MIME type for .smus files?

There is no officially registered MIME type for .smus files. Systems typically use application/octet-stream as a generic fallback when handling this format.

Is it safe to open .smus files?

SMUS (.smus) 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.