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.
WB1
application/x-quattro-pro;version=1+5
Primary Hex
00 00 02 00 01 10
QuattroPro for Windows Spreadsheet file
application/x-quattro-pro;version=6
Primary Hex
00 00 02 00 02 10
Quatro Pro for Windows 7
N/A
Primary Hex
24 18 BE FF E3 00 03 00 FE FF 09 00 06
WCM
application/vnd.ms-works
Primary Hex
D0 CF 11 E0 A1 B1 1A E1
WDB
application/vnd.ms-works
Primary Hex
D0 CF 11 E0 A1 B1 1A E1
WebM video file
N/A
Primary Hex
1A 45 DF A3
GoogleWebP image file
image/webp
Primary Hex
52 49 46 46 57 45 42 50
WHL
N/A
Primary Hex
50 4B 03 04 50 4B 05 06 50 4B 07 08
Microsoft Windows Imaging Format file
N/A
Primary Hex
4D 53 57 49 4D 00 00 00 D0 00 00 00 00