OTT
application/vnd.oasis.opendocument.text-template
Magic Bytes
Offset: 0
50 4B
The OpenDocument Text Template (OTT) is an XML-based file format maintained by the OASIS consortium as part of the Open Document Format for Office Applications standard. It serves as a blueprint for generating word processing documents within open-source office suites such as LibreOffice, Apache OpenOffice, and Collabora Online. While the format itself is a compressed container for structured data, users should remain aware that templates can contain embedded macros or scripts that may present potential security risks.
Validation Code
How to validate .ott files in Python
Python
def is_ott(file_path: str) -> bool:
"""Check if file is a valid OTT by magic bytes."""
signature = bytes([0x50, 0x4B])
with open(file_path, "rb") as f:
return f.read(2) == signatureHow to validate .ott files in Node.js
Node.js
function isOTT(buffer: Buffer): boolean {
const signature = Buffer.from([0x50, 0x4B]);
return buffer.subarray(0, 2).equals(signature);
}
Go
func IsOTT(data []byte) bool {
signature := []byte{0x50, 0x4B}
if len(data) < 2 {
return false
}
return bytes.Equal(data[:2], signature)
}API Endpoint
GET
/api/v1/ott
curl https://filesignature.org/api/v1/ott