Micrografx Designer v4 graphic file
application/octet-stream
Magic Bytes
Offset: 0
52 49 46 46 41 56 49 20 4C 49 53 54
The Micrografx Designer v4 graphic file is a proprietary vector image format developed by Micrografx and currently owned by Corel. It was used for creating engineering diagrams, architectural layouts, and technical vector illustrations within industrial and design environments. This version is a legacy format with no known security vulnerabilities because it contains static graphical data rather than executable code, though compatibility with modern software is limited.
Validation Code
How to validate .ds4 files in Python
Python
def is_ds4(file_path: str) -> bool:
"""Check if file is a valid DS4 by magic bytes."""
signature = bytes([0x52, 0x49, 0x46, 0x46, 0x41, 0x56, 0x49, 0x20, 0x4C, 0x49, 0x53, 0x54])
with open(file_path, "rb") as f:
return f.read(12) == signatureHow to validate .ds4 files in Node.js
Node.js
function isDS4(buffer: Buffer): boolean {
const signature = Buffer.from([0x52, 0x49, 0x46, 0x46, 0x41, 0x56, 0x49, 0x20, 0x4C, 0x49, 0x53, 0x54]);
return buffer.subarray(0, 12).equals(signature);
}
Go
func IsDS4(data []byte) bool {
signature := []byte{0x52, 0x49, 0x46, 0x46, 0x41, 0x56, 0x49, 0x20, 0x4C, 0x49, 0x53, 0x54}
if len(data) < 12 {
return false
}
return bytes.Equal(data[:12], signature)
}API Endpoint
GET
/api/v1/ds4
curl https://filesignature.org/api/v1/ds4