Easy CD Creator 5 Layout file

application/octet-stream

Safe

Magic Bytes

Offset: 0
1A 00 00

The Easy CD Creator 5 Layout file is a proprietary project format developed by Roxio for its optical disc authoring software. This format stores the organization of a disc compilation, including file paths, directory structures, and volume metadata prior to the burning process. As a legacy format associated with obsolete versions of the software, these files are inherently safe and are now typically encountered only in digital archiving or forensic contexts.

Extension

.cl5

MIME Type

application/octet-stream

Byte Offset

0

Risk Level

Safe

Validation Code

How to validate .cl5 files in Python

Python
def is_cl5(file_path: str) -> bool:
    """Check if file is a valid CL5 by magic bytes."""
    signature = bytes([0x1A, 0x00, 0x00])
    with open(file_path, "rb") as f:
        return f.read(3) == signature

How to validate .cl5 files in Node.js

Node.js
function isCL5(buffer: Buffer): boolean {
  const signature = Buffer.from([0x1A, 0x00, 0x00]);
  return buffer.subarray(0, 3).equals(signature);
}
Go
func IsCL5(data []byte) bool {
    signature := []byte{0x1A, 0x00, 0x00}
    if len(data) < 3 {
        return false
    }
    return bytes.Equal(data[:3], signature)
}

API Endpoint

GET /api/v1/cl5
curl https://filesignature.org/api/v1/cl5

Related Formats