USDZ
application/octet-stream
Magic Bytes
Offset: 0
50 4B 03 04 50 4B 05 06 50 4B 07 08
Universal Scene Description Zipped (USDZ) is an uncompressed ZIP archive format developed by Pixar in collaboration with Apple for 3D data. It is primarily utilized for sharing high-fidelity 3D assets and augmented reality experiences across mobile devices and web platforms. As an uncompressed container for Universal Scene Description files, it presents minimal security risks, although users should verify assets used in untrusted environments to prevent potential data exploitation or rendering issues.
Validation Code
How to validate .usdz files in Python
Python
def is_usdz(file_path: str) -> bool:
"""Check if file is a valid USDZ by magic bytes."""
signature = bytes([0x50, 0x4B, 0x03, 0x04, 0x50, 0x4B, 0x05, 0x06, 0x50, 0x4B, 0x07, 0x08])
with open(file_path, "rb") as f:
return f.read(12) == signatureHow to validate .usdz files in Node.js
Node.js
function isUSDZ(buffer: Buffer): boolean {
const signature = Buffer.from([0x50, 0x4B, 0x03, 0x04, 0x50, 0x4B, 0x05, 0x06, 0x50, 0x4B, 0x07, 0x08]);
return buffer.subarray(0, 12).equals(signature);
}
Go
func IsUSDZ(data []byte) bool {
signature := []byte{0x50, 0x4B, 0x03, 0x04, 0x50, 0x4B, 0x05, 0x06, 0x50, 0x4B, 0x07, 0x08}
if len(data) < 12 {
return false
}
return bytes.Equal(data[:12], signature)
}API Endpoint
GET
/api/v1/usdz
curl https://filesignature.org/api/v1/usdz