SPSS Statistics
application/octet-stream
Magic Bytes
Offset: 0
25 21 50 53 2D 41 64 6F 62 65 2D
The SPSS Statistics (SAV) format is a proprietary binary format created by SPSS Inc. and currently maintained by IBM for storing statistical datasets. This format is primarily used by social scientists and researchers for managing survey results, performing data manipulations, and conducting quantitative analysis. Although the binary structure is generally considered safe, it remains a closed specification, necessitating the use of specialized software or open-source libraries for cross-platform data migration.
Validation Code
How to validate .sav files in Python
Python
def is_sav(file_path: str) -> bool:
"""Check if file is a valid SAV by magic bytes."""
signature = bytes([0x25, 0x21, 0x50, 0x53, 0x2D, 0x41, 0x64, 0x6F, 0x62, 0x65, 0x2D])
with open(file_path, "rb") as f:
return f.read(11) == signatureHow to validate .sav files in Node.js
Node.js
function isSAV(buffer: Buffer): boolean {
const signature = Buffer.from([0x25, 0x21, 0x50, 0x53, 0x2D, 0x41, 0x64, 0x6F, 0x62, 0x65, 0x2D]);
return buffer.subarray(0, 11).equals(signature);
}
Go
func IsSAV(data []byte) bool {
signature := []byte{0x25, 0x21, 0x50, 0x53, 0x2D, 0x41, 0x64, 0x6F, 0x62, 0x65, 0x2D}
if len(data) < 11 {
return false
}
return bytes.Equal(data[:11], signature)
}API Endpoint
GET
/api/v1/sav
curl https://filesignature.org/api/v1/sav