SDW (.sdw)
.sdw file signature | application/vnd.stardivision.writer
Magic Bytes
Offset 0
D0 CF 11 E0 A1 B1 1A E1
Sources: Apache Tika
Extension
.sdw
MIME Type
application/vnd.stardivision.writer
Byte Offset
0
Risk Level
Safe
Validation Code
How to validate .sdw files in Python
def is_sdw(file_path: str) -> bool:
"""Check if file is a valid SDW by magic bytes."""
signature = bytes([0xD0, 0xCF, 0x11, 0xE0, 0xA1, 0xB1, 0x1A, 0xE1])
with open(file_path, "rb") as f:
return f.read(8) == signatureHow to validate .sdw files in Node.js
function isSDW(buffer: Buffer): boolean {
const signature = Buffer.from([0xD0, 0xCF, 0x11, 0xE0, 0xA1, 0xB1, 0x1A, 0xE1]);
return buffer.subarray(0, 8).equals(signature);
}How to validate .sdw files in Go
func IsSDW(data []byte) bool {
signature := []byte{0xD0, 0xCF, 0x11, 0xE0, 0xA1, 0xB1, 0x1A, 0xE1}
if len(data) < 8 {
return false
}
return bytes.Equal(data[:8], signature)
}API Endpoint
/api/v1/sdw
curl https://filesignature.org/api/v1/sdw
See the full API documentation for all endpoints and parameters.
Frequently Asked Questions
What is a .sdw file?
A .sdw file is a SDW file.
What are the magic bytes for .sdw files?
The magic bytes for SDW files are D0 CF 11 E0 A1 B1 1A E1 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.
How do I validate a .sdw file?
To validate a .sdw file, read the first bytes of the file and compare them against the known magic bytes (D0 CF 11 E0 A1 B1 1A E1) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.
What is the MIME type for .sdw files?
The primary MIME type for .sdw files is application/vnd.stardivision.writer.
Is it safe to open .sdw files?
SDW (.sdw) 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.