Skip to content

ODFT (.odft)

.odft file signature | application/vnd.oasis.opendocument.formula-template

Safe

Magic Bytes

Offset 0
50 4B

Sources: Apache Tika

Extension

.odft

MIME Type

application/vnd.oasis.opendocument.formula-template

Byte Offset

0

Risk Level

Safe

Validation Code

How to validate .odft files in Python

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) == signature

How to validate .odft files in Node.js

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

Go
func IsODFT(data []byte) bool {
    signature := []byte{0x50, 0x4B}
    if len(data) < 2 {
        return false
    }
    return bytes.Equal(data[:2], signature)
}

API Endpoint

GET /api/v1/odft
curl https://filesignature.org/api/v1/odft

See the full API documentation for all endpoints and parameters.

Frequently Asked Questions

What is a .odft file?

A .odft file is a ODFT file.

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.