All File Signatures & Extensions
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XHTML
Primary Hex
3C 68 74 6D 6C 20 78 6D 6C 6E 73 3D
An Object Linking and Embedding
Primary Hex
D0 CF 11 E0 A1 B1 1A E1
XLC
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
XLD
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
XLL
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
XLM
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
XLR
Primary Hex
D0 CF 11 E0 A1 B1 1A E1
An Object Linking and Embedding
Primary Hex
D0 CF 11 E0 A1 B1 1A E1
Microsoft Office Open XML Format
Primary Hex
50 4B 03 04
XLT
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
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
XML
Primary Hex
3C 3F 78 6D 6C
Mozilla Browser Archive
Primary Hex
50 4B 03 04
XPM
Primary Hex
2F 2A 20 58 50 4D 20 2A
XML paper specification file
Primary Hex
50 4B 03 04
SAS Transport File
Primary Hex
48 45 41 44 45 52 20 52 45 43 4F 52 44 2A 2A 2A
XSD
Primary Hex
3C 3F 78 6D 6C
XSL
Primary Hex
3C 3F 78 6D 6C
XML User Interface Language file
Primary Hex
3C 3F 78 6D 6C 20 76 65 72 73 69 6F 6E 3D 22 31 2E 30 22 3F 3E
Compucon/Singer embroidery design file
Primary Hex
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
XZ archive file
Primary Hex
FD 37 7A 58 5A 00
YouTube Timed Text
Primary Hex
EF BB BF 3C 3F 78 6D 6C 20 76 65 72 73 69 6F 6E
YUV
Primary Hex
46 4F 52 4D
YUVN
Primary Hex
46 4F 52 4D