ODFT
application/vnd.oasis.opendocument.formula-template
Magic Bytes
Offset: 0
50 4B
The OpenDocument Formula Template (ODFT) is an XML-based file format maintained by OASIS for defining mathematical equations and formulas. This format serves as a reusable blueprint within office productivity suites like LibreOffice and Apache OpenOffice to ensure consistent formatting across multiple documents. While the format itself is considered safe, it utilizes a ZIP-compressed structure that requires office applications to implement proper security measures when parsing internal XML components and metadata.
Validation Code
How to validate .odft files in Python
def is_odft(file_path: str) -> bool:
"""Check if file is a valid ODFT by magic bytes."""
signature = bytes([0x50, 0x4B])
with open(file_path, "rb") as f:
return f.read(2) == signatureHow to validate .odft files in Node.js
function isODFT(buffer: Buffer): boolean {
const signature = Buffer.from([0x50, 0x4B]);
return buffer.subarray(0, 2).equals(signature);
}How to validate .odft files in Go
func IsODFT(data []byte) bool {
signature := []byte{0x50, 0x4B}
if len(data) < 2 {
return false
}
return bytes.Equal(data[:2], signature)
}API Endpoint
/api/v1/odft
curl https://filesignature.org/api/v1/odft
Related Formats
Frequently Asked Questions
What is a .odft file?
A .odft file is a ODFT file. The OpenDocument Formula Template (ODFT) is an XML-based file format maintained by OASIS for defining mathematical equations and formulas. This format serves as a reusable blueprint within office productivity suites like LibreOffice and Apache OpenOffice to ensure consistent formatting across multiple documents. While the format itself is considered safe, it utilizes a ZIP-compressed structure that requires office applications to implement proper security measures when parsing internal XML components and metadata.
What are the magic bytes for .odft files?
The magic bytes for ODFT files are 50 4B at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.
How do I validate a .odft file?
To validate a .odft file, read the first bytes of the file and compare them against the known magic bytes (50 4B) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.
What is the MIME type for .odft files?
The primary MIME type for .odft files is application/vnd.oasis.opendocument.formula-template.
Is it safe to open .odft files?
ODFT (.odft) 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.