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.
IBM
Primary Hex
46 4F 52 4D
IBOOKS
Primary Hex
50 4B 03 04
ICB
Primary Hex
01 01 00 00
ICC
Primary Hex
61 63 73 70
ICM
Primary Hex
61 63 73 70
MacOS icon file
Primary Hex
69 63 6E 73
Windows icon file
Primary Hex
00 00 01 00
ICS
Primary Hex
42 45 47 49 4E 3A 56 43 41 4C 45 4E 44 41 52
IDENTIFIER
Primary Hex
5B 5A 6F 6E 65 54 72 61
Quicken QuickFinder Information File
Primary Hex
49 4E 44 58
IEC
Primary Hex
4D 5A
IFB
Primary Hex
42 45 47 49 4E 3A 56 43 41 4C 45 4E 44 41 52
Electronic Arts'Interchange Format Files
Primary Hex
46 4F 52 4D
DVD info file
Primary Hex
44 56 44 56 49 44 45 4F 2D 56 54 53
ILBM
Primary Hex
46 4F 52 4D
IME
Primary Hex
4D 5A
Ventura Publisher/GEM VDI Image Format Bitmap file
Primary Hex
00 01 00 08 00 01 00 01 01
AOL client preferences/settings file
Primary Hex
41 4F 4C 49 44 58
Adobe InDesign document
Primary Hex
06 06 ED F5 D8 1D 46 E5 BD 31 EF E7 FE 74 B7 1D
MultiBit Bitcoin wallet information file
Primary Hex
54 68 69 73 20 69 73 20
InstallShield Script
Primary Hex
B8 C9 0C 00
INX
Primary Hex
3C 3F 61 69 64
IPA
Primary Hex
50 4B 03 04
Inter@ctive Pager Backup
Primary Hex
49 6E 74 65 72 40 63 74 69 76 65 20 50 61 67 65