OpenEXR bitmap image format
image/aces
Magic Bytes
Offset: 0
76 2F 31 01 02 00 00 00
OpenEXR is a high-dynamic-range image file format originally developed by Industrial Light & Magic and currently maintained by the Academy Software Foundation. This professional specification is primarily utilized in visual effects and animation for compositing, photorealistic rendering, and storing deep color data. As an open-source project, the format is considered secure for professional environments, provided that users utilize current reference libraries to ensure proper parsing of complex multi-layered data.
Validation Code
How to validate .exr files in Python
Python
def is_exr(file_path: str) -> bool:
"""Check if file is a valid EXR by magic bytes."""
signature = bytes([0x76, 0x2F, 0x31, 0x01, 0x02, 0x00, 0x00, 0x00])
with open(file_path, "rb") as f:
return f.read(8) == signatureHow to validate .exr files in Node.js
Node.js
function isEXR(buffer: Buffer): boolean {
const signature = Buffer.from([0x76, 0x2F, 0x31, 0x01, 0x02, 0x00, 0x00, 0x00]);
return buffer.subarray(0, 8).equals(signature);
}
Go
func IsEXR(data []byte) bool {
signature := []byte{0x76, 0x2F, 0x31, 0x01, 0x02, 0x00, 0x00, 0x00}
if len(data) < 8 {
return false
}
return bytes.Equal(data[:8], signature)
}API Endpoint
GET
/api/v1/exr
curl https://filesignature.org/api/v1/exr