WKQ
application/x-quattro-pro;version=1-4
Magic Bytes
Offset: 0
00 00 02 00 20 51
WKQ is a spreadsheet file format developed by Borland for use with early versions of the Quattro Pro software suite. It was primarily used for organizing numerical data, performing mathematical calculations, and generating financial reports within DOS-based office environments. This legacy format is now largely obsolete, though modern spreadsheet applications like Corel Quattro Pro and LibreOffice Calc can still import these files for data recovery and historical archival purposes.
Validation Code
How to validate .wkq files in Python
Python
def is_wkq(file_path: str) -> bool:
"""Check if file is a valid WKQ by magic bytes."""
signature = bytes([0x00, 0x00, 0x02, 0x00, 0x20, 0x51])
with open(file_path, "rb") as f:
return f.read(6) == signatureHow to validate .wkq files in Node.js
Node.js
function isWKQ(buffer: Buffer): boolean {
const signature = Buffer.from([0x00, 0x00, 0x02, 0x00, 0x20, 0x51]);
return buffer.subarray(0, 6).equals(signature);
}
Go
func IsWKQ(data []byte) bool {
signature := []byte{0x00, 0x00, 0x02, 0x00, 0x20, 0x51}
if len(data) < 6 {
return false
}
return bytes.Equal(data[:6], signature)
}API Endpoint
GET
/api/v1/wkq
curl https://filesignature.org/api/v1/wkq