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.
Wasm
Primary Hex
00 61 73 6D
Resource Interchange File Format --Audio for Windowsfile
Primary Hex
52 49 46 46 2E 2E 2E 2E 57 41 56 45
WB1
Primary Hex
00 00 02 00 01 10
QuattroPro for Windows Spreadsheet file
Primary Hex
00 00 02 00 02 10
Quatro Pro for Windows 7
Primary Hex
3E 00 03 00 FE FF 09 00 06
WCM
Primary Hex
D0 CF 11 E0 A1 B1 1A E1
WDB
Primary Hex
D0 CF 11 E0 A1 B1 1A E1
WebM video file
Primary Hex
1A 45 DF A3
GoogleWebP image file
Primary Hex
57 45 42 50
WHL
Primary Hex
50 4B 03 04
Microsoft Windows Imaging Format file
Primary Hex
4D 53 57 49 4D 00 00 00
An Object Linking and Embedding
Primary Hex
D0 CF 11 E0 A1 B1 1A E1
Lotus 1-2-3 spreadsheet
Primary Hex
00 00 02 00 06 04 06 00 08 00 00 00 00 00
WK2
Primary Hex
00 00 02 00 06 04 06 00 08 00
Lotus 1-2-3 spreadsheet
Primary Hex
00 00 1A 00 00 10 04 00 00 00 00 00
Lotus 1-2-3 spreadsheet
Primary Hex
00 00 1A 00 02 10 04 00 00 00 00 00
Lotus 1-2-3 spreadsheet
Primary Hex
00 00 1A 00 02 10 04 00 00 00 00 00
WKQ
Primary Hex
00 00 02 00 20 51
Works for Windows spreadsheet file
Primary Hex
0E 57 4B 53
WL
Primary Hex
23 21 2F 75 73 72 2F 62 69 6E 2F 65 6E 76 20 77 6F 6C 66 72 61 6D 73 63 72 69 70 74
Microsoft Windows Media Audio/Video File
Primary Hex
30 26 B2 75 8E 66 CF 11
Windows graphics metafile
Primary Hex
D7 CD C6 9A
Microsoft Windows Media Audio/Video File
Primary Hex
30 26 B2 75 8E 66 CF 11 A6 D9 00 AA 00 62 CE 6C
Windows Media compressed skin file
Primary Hex
50 4B 03 04