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Compucon/Singer embroidery design file (.xxx)

.xxx file signature | application/octet-stream

Compucon/Singer embroidery design file

Safe

Magic Bytes

Offset 0
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

Sources: Gary Kessler

Extension

.xxx

MIME Type

application/octet-stream

Byte Offset

0

Risk Level

Safe

Validation Code

How to validate .xxx files in Python

Python 
def is_xxx(file_path: str) -> bool:
    """Check if file is a valid XXX by magic bytes."""
    signature = bytes([0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00])
    with open(file_path, "rb") as f:
        return f.read(16) == signature

How to validate .xxx files in Node.js

Node.js 
function isXXX(buffer: Buffer): boolean {
  const signature = Buffer.from([0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]);
  return buffer.subarray(0, 16).equals(signature);
}

How to validate .xxx files in Go

Go 
func IsXXX(data []byte) bool {
    signature := []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}
    if len(data) < 16 {
        return false
    }
    return bytes.Equal(data[:16], signature)
}

API Endpoint

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

See the full API documentation for all endpoints and parameters.

Frequently Asked Questions

What is a .xxx file?

A .xxx file is a Compucon/Singer embroidery design file file. Compucon/Singer embroidery design file

What are the magic bytes for .xxx files?

The magic bytes for Compucon/Singer embroidery design file files are 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.

How do I validate a .xxx file?

To validate a .xxx file, read the first bytes of the file and compare them against the known magic bytes (00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.

What is the MIME type for .xxx files?

There is no officially registered MIME type for .xxx files. Systems typically use application/octet-stream as a generic fallback when handling this format.

Is it safe to open .xxx files?

Compucon/Singer embroidery design file (.xxx) 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.