Works for Windows spreadsheet file (.wks)
.wks file signature | application/vnd.ms-works
Works for Windows spreadsheet file
Magic Bytes
Offset 0
0E 57 4B 53
Sources: Wikipedia, Gary Kessler
All Known Signatures
3 signature variants are documented for .wks files across multiple sources.
| Hex Signature | Offset | Sources |
|---|---|---|
| 0E 57 4B 53 | 0 | Wikipedia, Gary Kessler |
| D0 CF 11 E0 A1 B1 1A E1 | 0 | Apache Tika |
| FF 00 02 00 04 04 05 54 02 00 | 0 | Gary Kessler |
Extension
.wks
MIME Type
application/vnd.ms-works
Byte Offset
0
Risk Level
Safe
Validation Code
How to validate .wks files in Python
def is_wks(file_path: str) -> bool:
"""Check if file is a valid WKS by magic bytes."""
signature = bytes([0x0E, 0x57, 0x4B, 0x53])
with open(file_path, "rb") as f:
return f.read(4) == signatureHow to validate .wks files in Node.js
function isWKS(buffer: Buffer): boolean {
const signature = Buffer.from([0x0E, 0x57, 0x4B, 0x53]);
return buffer.subarray(0, 4).equals(signature);
}How to validate .wks files in Go
func IsWKS(data []byte) bool {
signature := []byte{0x0E, 0x57, 0x4B, 0x53}
if len(data) < 4 {
return false
}
return bytes.Equal(data[:4], signature)
}API Endpoint
/api/v1/wks
curl https://filesignature.org/api/v1/wks
See the full API documentation for all endpoints and parameters.
Frequently Asked Questions
What is a .wks file?
A .wks file is a Works for Windows spreadsheet file file. Works for Windows spreadsheet file
What are the magic bytes for .wks files?
The magic bytes for Works for Windows spreadsheet file files are 0E 57 4B 53 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.
How do I validate a .wks file?
To validate a .wks file, read the first bytes of the file and compare them against the known magic bytes (0E 57 4B 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 .wks files?
The primary MIME type for .wks files is application/vnd.ms-works.
Is it safe to open .wks files?
Works for Windows spreadsheet file (.wks) 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.