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.
JPGM
Primary Hex
00 00 00 0C 6A 50 20 20 0D 0A 87 0A
JPM
Primary Hex
00 00 00 0C 6A 50 20 20 0D 0A 87 0A
JPX
Primary Hex
00 00 00 0C 6A 50 20 20 0D 0A 87 0A
JS
Primary Hex
2F 2A 20 6A 51 75 65 72 79 20
JSP
Primary Hex
3C 25 40
MS Windows journal file
Primary Hex
4E 42 2A 00
JXL
Primary Hex
00 00 00 0C 4A 58 4C 20 0D 0A 87 0A
K-9 Mailsettings file
Primary Hex
3C 6B 39 73 65 74 74 69 6E 67 73
KAR
Primary Hex
4D 54 68 64
KDB
Primary Hex
37 48 03 02 00 00 00 00
KEY
Primary Hex
2D 2D 2D 2D 2D 42 45 47 49 4E 20 50 52 49 56 41 54 45 20 4B 45 59 2D 2D 2D 2D 2D
KGB archive
Primary Hex
4B 47 42 5F 61 72 63 68 20 2D
Google Earth saved working session file
Primary Hex
50 4B 03 04
KO
Primary Hex
7F 45 4C 46
Sprint Music Store audio file
Primary Hex
49 44 33 03 00 00 00
Khronos texture filefor OpenGL and OpenGL ES applications
Primary Hex
AB 4B 54 58 20 31 31 BB 0D 0A 1A 0A
KWord document
Primary Hex
50 4B 03 04
LAS
Primary Hex
4C 41 53 46
LATEX
Primary Hex
25 20 2D 2A 2D 6C 61 74 65 78 2D 2A 2D
LAZ
Primary Hex
4C 41 53 46
Jeppesen FliteLog file
Primary Hex
C8 00 79 00
LBM
Primary Hex
46 4F 52 4D
LEP
Primary Hex
CF 84 01
Windows application log
Primary Hex
7B 0D 0A 6F 20