Visual Studio Solution User Options file (.sou)
.sou file signature | application/octet-stream
Magic Bytes
Offset: 0
CF FA ED FE
Visual Studio Solution User Options file
Sources: Gary Kessler
All Known Signatures
2 signature variants are documented for .sou files across multiple sources.
| Hex Signature | Offset | Sources |
|---|---|---|
| CF FA ED FE | 0 | Gary Kessler |
| D0 CF 11 E0 A1 B1 1A E1 | 0 | Gary Kessler |
Validation Code
How to validate .sou files in Python
def is_sou(file_path: str) -> bool:
"""Check if file is a valid SOU by magic bytes."""
signature = bytes([0xCF, 0xFA, 0xED, 0xFE])
with open(file_path, "rb") as f:
return f.read(4) == signatureHow to validate .sou files in Node.js
function isSOU(buffer: Buffer): boolean {
const signature = Buffer.from([0xCF, 0xFA, 0xED, 0xFE]);
return buffer.subarray(0, 4).equals(signature);
}How to validate .sou files in Go
func IsSOU(data []byte) bool {
signature := []byte{0xCF, 0xFA, 0xED, 0xFE}
if len(data) < 4 {
return false
}
return bytes.Equal(data[:4], signature)
}API Endpoint
/api/v1/sou
curl https://filesignature.org/api/v1/sou
See the full API documentation for all endpoints and parameters.
Frequently Asked Questions
What is a .sou file?
A .sou file is a Visual Studio Solution User Options file file. Visual Studio Solution User Options file
What are the magic bytes for .sou files?
The magic bytes for Visual Studio Solution User Options file files are CF FA ED FE at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.
How do I validate a .sou file?
To validate a .sou file, read the first bytes of the file and compare them against the known magic bytes (CF FA ED FE) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.
What is the MIME type for .sou files?
There is no officially registered MIME type for .sou files. Systems typically use application/octet-stream as a generic fallback when handling this format.
Is it safe to open .sou files?
Visual Studio Solution User Options file (.sou) 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.