FT
text/plain
Magic Bytes
Offset: 0
54 68 69 73 20 69 73 20 54 65 58 2C
The FT file format denotes a data or resource file associated with the TeX typesetting system developed by Donald Knuth. It is primarily used to define document structures, precompiled macros, and formatting rules that streamline the rendering of scientific and mathematical publications. Since the format consists of plain text commands without executable binaries, it is considered a safe legacy file type that poses no security threats to the host system.
Validation Code
How to validate .ft files in Python
Python
def is_ft(file_path: str) -> bool:
"""Check if file is a valid FT by magic bytes."""
signature = bytes([0x54, 0x68, 0x69, 0x73, 0x20, 0x69, 0x73, 0x20, 0x54, 0x65, 0x58, 0x2C])
with open(file_path, "rb") as f:
return f.read(12) == signatureHow to validate .ft files in Node.js
Node.js
function isFT(buffer: Buffer): boolean {
const signature = Buffer.from([0x54, 0x68, 0x69, 0x73, 0x20, 0x69, 0x73, 0x20, 0x54, 0x65, 0x58, 0x2C]);
return buffer.subarray(0, 12).equals(signature);
}
Go
func IsFT(data []byte) bool {
signature := []byte{0x54, 0x68, 0x69, 0x73, 0x20, 0x69, 0x73, 0x20, 0x54, 0x65, 0x58, 0x2C}
if len(data) < 12 {
return false
}
return bytes.Equal(data[:12], signature)
}API Endpoint
GET
/api/v1/ft
curl https://filesignature.org/api/v1/ft