Windows/DOS executable file (.qtx)
.qtx file signature | application/octet-stream
Magic Bytes
Offset: 0
4D 5A
Windows/DOS executable file(SeeThe MZ EXE File Formatpage for the structure of an EXE file,with coverage of NE, TLINK, PE, self-extracting archives, and more.)Note:MZ are the initals of Mark Zbikowski, designer of the DOS executable file format.
Sources: Gary Kessler
Validation Code
How to validate .qtx files in Python
def is_qtx(file_path: str) -> bool:
"""Check if file is a valid QTX by magic bytes."""
signature = bytes([0x4D, 0x5A])
with open(file_path, "rb") as f:
return f.read(2) == signatureHow to validate .qtx files in Node.js
function isQTX(buffer: Buffer): boolean {
const signature = Buffer.from([0x4D, 0x5A]);
return buffer.subarray(0, 2).equals(signature);
}How to validate .qtx files in Go
func IsQTX(data []byte) bool {
signature := []byte{0x4D, 0x5A}
if len(data) < 2 {
return false
}
return bytes.Equal(data[:2], signature)
}API Endpoint
/api/v1/qtx
curl https://filesignature.org/api/v1/qtx
See the full API documentation for all endpoints and parameters.
Frequently Asked Questions
What is a .qtx file?
A .qtx file is a Windows/DOS executable file file. Windows/DOS executable file(SeeThe MZ EXE File Formatpage for the structure of an EXE file,with coverage of NE, TLINK, PE, self-extracting archives, and more.)Note:MZ are the initals of Mark Zbikowski, designer of the DOS executable file format.
What are the magic bytes for .qtx files?
The magic bytes for Windows/DOS executable file files are 4D 5A at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.
How do I validate a .qtx file?
To validate a .qtx file, read the first bytes of the file and compare them against the known magic bytes (4D 5A) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.
What is the MIME type for .qtx files?
There is no officially registered MIME type for .qtx files. Systems typically use application/octet-stream as a generic fallback when handling this format.
Is it safe to open .qtx files?
Windows/DOS executable file (.qtx) 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.