OpenOffice spreadsheet (.sxc)
.sxc file signature | application/octet-stream
Magic Bytes
Offset: 0
50 4B 03 04
OpenOffice spreadsheet (Calc), drawing (Draw), presentation (Impress),and word processing (Writer) files, respectively.
Sources: Gary Kessler
Validation Code
How to validate .sxc files in Python
def is_sxc(file_path: str) -> bool:
"""Check if file is a valid SXC by magic bytes."""
signature = bytes([0x50, 0x4B, 0x03, 0x04])
with open(file_path, "rb") as f:
return f.read(4) == signatureHow to validate .sxc files in Node.js
function isSXC(buffer: Buffer): boolean {
const signature = Buffer.from([0x50, 0x4B, 0x03, 0x04]);
return buffer.subarray(0, 4).equals(signature);
}How to validate .sxc files in Go
func IsSXC(data []byte) bool {
signature := []byte{0x50, 0x4B, 0x03, 0x04}
if len(data) < 4 {
return false
}
return bytes.Equal(data[:4], signature)
}API Endpoint
/api/v1/sxc
curl https://filesignature.org/api/v1/sxc
See the full API documentation for all endpoints and parameters.
Frequently Asked Questions
What is a .sxc file?
A .sxc file is a OpenOffice spreadsheet file. OpenOffice spreadsheet (Calc), drawing (Draw), presentation (Impress),and word processing (Writer) files, respectively.
What are the magic bytes for .sxc files?
The magic bytes for OpenOffice spreadsheet files are 50 4B 03 04 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.
How do I validate a .sxc file?
To validate a .sxc file, read the first bytes of the file and compare them against the known magic bytes (50 4B 03 04) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.
What is the MIME type for .sxc files?
There is no officially registered MIME type for .sxc files. Systems typically use application/octet-stream as a generic fallback when handling this format.
Is it safe to open .sxc files?
OpenOffice spreadsheet (.sxc) 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.