All File Signatures & Extensions
Search by extension, format name, or MIME type to jump straight to a canonical signature page with validation code and source attribution.
GPKG
application/x-geopackage
Primary Hex
53 51 4C 69 74 65 20 66 6F 72 6D 61 74 20 33 00
GPS eXchange file
N/A
Primary Hex
3C 67 70 78 20 76 65 72 73 69 6F 6E 3D 22 31 2E 31
GRIdded Binary or General Regularly-distributed Information in Binary file
application/x-grib
Primary Hex
47 52 49 42
GRB1
application/x-grib
Primary Hex
47 52 49 42
GRB2
application/x-grib
Primary Hex
47 52 49 42
GRIB
N/A
Primary Hex
47 52 49 42
GRIB2
N/A
Primary Hex
47 52 49 42
GRM
text/plain
Primary Hex
54 68 69 73 20 69 73 20 54 65 58 2C
Windows Program Manager group file
N/A
Primary Hex
50 4D 43 43