Windows Server 2003 printer spool file (.shd)
.shd file signature | application/octet-stream
Windows Server 2003 printer spool file
Magic Bytes
Offset 0
4B 49 00 00
Sources: Gary Kessler
All Known Signatures
4 signature variants are documented for .shd files across multiple sources.
| Hex Signature | Offset | Sources |
|---|---|---|
| 4B 49 00 00 | 0 | Gary Kessler |
| 66 49 00 00 | 0 | Gary Kessler |
| 67 49 00 00 | 0 | Gary Kessler |
| 68 49 00 00 | 0 | Gary Kessler |
Extension
.shd
MIME Type
application/octet-stream
Byte Offset
0
Risk Level
Safe
Validation Code
How to validate .shd files in Python
def is_shd(file_path: str) -> bool:
"""Check if file is a valid SHD by magic bytes."""
signature = bytes([0x4B, 0x49, 0x00, 0x00])
with open(file_path, "rb") as f:
return f.read(4) == signatureHow to validate .shd files in Node.js
function isSHD(buffer: Buffer): boolean {
const signature = Buffer.from([0x4B, 0x49, 0x00, 0x00]);
return buffer.subarray(0, 4).equals(signature);
}How to validate .shd files in Go
func IsSHD(data []byte) bool {
signature := []byte{0x4B, 0x49, 0x00, 0x00}
if len(data) < 4 {
return false
}
return bytes.Equal(data[:4], signature)
}API Endpoint
/api/v1/shd
curl https://filesignature.org/api/v1/shd
See the full API documentation for all endpoints and parameters.
Frequently Asked Questions
What is a .shd file?
A .shd file is a Windows Server 2003 printer spool file file. Windows Server 2003 printer spool file
What are the magic bytes for .shd files?
The magic bytes for Windows Server 2003 printer spool file files are 4B 49 00 00 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.
How do I validate a .shd file?
To validate a .shd file, read the first bytes of the file and compare them against the known magic bytes (4B 49 00 00) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.
What is the MIME type for .shd files?
There is no officially registered MIME type for .shd files. Systems typically use application/octet-stream as a generic fallback when handling this format.
Is it safe to open .shd files?
Windows Server 2003 printer spool file (.shd) 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.