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.
XLT
application/vnd.ms-excel
Primary Hex
4D 69 63 72 6F 73 6F 66 74 20 45 78 63 65 6C 20 35 2E 30 20 57 6F 72 6B 73 68 65 65 74
XLW
application/vnd.ms-excel
Primary Hex
4D 69 63 72 6F 73 6F 66 74 20 45 78 63 65 6C 20 35 2E 30 20 57 6F 72 6B 73 68 65 65 74
XMAP
text/plain
Primary Hex
54 68 69 73 20 69 73 20 54 65 58 2C
XML
application/xml
Primary Hex
3C 3F 78 6D 6C
Mozilla Browser Archive
N/A
Primary Hex
50 4B 03 04 50 4B 05 06 50 4B 07 08
XPM
N/A
Primary Hex
2F 2A 20 58 50 4D 20 2A 2F
XML paper specification file
N/A
Primary Hex
50 4B 03 04
XPCOM type libraries for the XPIDL compiler
N/A
Primary Hex
48 45 41 44 45 52 20 52 45 43 4F 52 44 2A 2A 2A
XROLES
text/plain
Primary Hex
54 68 69 73 20 69 73 20 54 65 58 2C