Microsoft Open XML paper specification file (.oxps)
.oxps file signature | application/octet-stream
Magic Bytes
Offset: 0
50 4B 03 04
Microsoft Open XML paper specification file
Sources: Gary Kessler
Validation Code
How to validate .oxps files in Python
def is_oxps(file_path: str) -> bool:
"""Check if file is a valid OXPS by magic bytes."""
signature = bytes([0x50, 0x4B, 0x03, 0x04])
with open(file_path, "rb") as f:
return f.read(4) == signatureHow to validate .oxps files in Node.js
function isOXPS(buffer: Buffer): boolean {
const signature = Buffer.from([0x50, 0x4B, 0x03, 0x04]);
return buffer.subarray(0, 4).equals(signature);
}How to validate .oxps files in Go
func IsOXPS(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/oxps
curl https://filesignature.org/api/v1/oxps
See the full API documentation for all endpoints and parameters.
Frequently Asked Questions
What is a .oxps file?
A .oxps file is a Microsoft Open XML paper specification file file. Microsoft Open XML paper specification file
What are the magic bytes for .oxps files?
The magic bytes for Microsoft Open XML paper specification file 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 .oxps file?
To validate a .oxps 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 .oxps files?
There is no officially registered MIME type for .oxps files. Systems typically use application/octet-stream as a generic fallback when handling this format.
Is it safe to open .oxps files?
Microsoft Open XML paper specification file (.oxps) 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.