GRIB
application/octet-stream
Magic Bytes
Offset: 0
47 52 49 42
GRIB (General Regularly-distributed Information in Binary form) is a standardized data format maintained by the World Meteorological Organization (WMO) for meteorological data. It serves as the primary operational standard for storing and exchanging historical and forecast weather data within scientific institutions worldwide. As a compact binary structure designed for efficient transmission of grid-based data, it is considered safe and does not support active content or executable code.
Validation Code
How to validate .grib files in Python
Python
def is_grib(file_path: str) -> bool:
"""Check if file is a valid GRIB by magic bytes."""
signature = bytes([0x47, 0x52, 0x49, 0x42])
with open(file_path, "rb") as f:
return f.read(4) == signatureHow to validate .grib files in Node.js
Node.js
function isGRIB(buffer: Buffer): boolean {
const signature = Buffer.from([0x47, 0x52, 0x49, 0x42]);
return buffer.subarray(0, 4).equals(signature);
}
Go
func IsGRIB(data []byte) bool {
signature := []byte{0x47, 0x52, 0x49, 0x42}
if len(data) < 4 {
return false
}
return bytes.Equal(data[:4], signature)
}API Endpoint
GET
/api/v1/grib
curl https://filesignature.org/api/v1/grib