GRB1 (.grb1)
.grb1 file signature | application/x-grib
GRB1 is a binary meteorological data format associated with the GRIB1 specification, which is defined and maintained by the World Meteorological Organization and related forecasting standards bodies. It is used to store and exchange gridded weather data such as temperature, wind, pressure, and precipitation in forecasting systems and climate applications. The format is generally safe, though, like other data files, it should be handled with validated parsers to avoid malformed-input issues.
Magic Bytes
Offset 0
47 52 49 42
Sources: Apache Tika
Extension
.grb1
MIME Type
application/x-grib
Byte Offset
0
Risk Level
Safe
Validation Code
How to validate .grb1 files in Python
def is_grb1(file_path: str) -> bool:
"""Check if file is a valid GRB1 by magic bytes."""
signature = bytes([0x47, 0x52, 0x49, 0x42])
with open(file_path, "rb") as f:
return f.read(4) == signatureHow to validate .grb1 files in Node.js
function isGRB1(buffer: Buffer): boolean {
const signature = Buffer.from([0x47, 0x52, 0x49, 0x42]);
return buffer.subarray(0, 4).equals(signature);
}How to validate .grb1 files in Go
func IsGRB1(data []byte) bool {
signature := []byte{0x47, 0x52, 0x49, 0x42}
if len(data) < 4 {
return false
}
return bytes.Equal(data[:4], signature)
}API Endpoint
/api/v1/grb1
curl https://filesignature.org/api/v1/grb1
See the full API documentation for all endpoints and parameters.
Related Formats
Frequently Asked Questions
What is a .grb1 file?
A .grb1 file is identified by the magic bytes 47 52 49 42 at byte offset 0. GRB1 is a binary meteorological data format associated with the GRIB1 specification, which is defined and maintained by the World Meteorological Organization and related forecasting standards bodies. It is used to store and exchange gridded weather data such as temperature, wind, pressure, and precipitation in forecasting systems and climate applications. The format is generally safe, though, like other data files, it should be handled with validated parsers to avoid malformed-input issues.
What are the magic bytes for .grb1 files?
The magic bytes for GRB1 files are 47 52 49 42 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.
How do I validate a .grb1 file?
To validate a .grb1 file, read the first bytes of the file and compare them against the known magic bytes (47 52 49 42) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.
What is the MIME type for .grb1 files?
The primary MIME type for .grb1 files is application/x-grib.
Is it safe to open .grb1 files?
GRB1 (.grb1) files are generally safe to open. They are classified as low risk because they primarily contain data rather than executable code. However, always ensure files come from a trusted source.