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.
MJ2
video/mj2
Primary Hex
00 00 00 0C 6A 50 20 20 0D 0A 87 0A
MJP2
video/mj2
Primary Hex
00 00 00 0C 6A 50 20 20 0D 0A 87 0A
MJS
text/javascript
Primary Hex
2F 2A 20 6A 51 75 65 72 79 20
MK3D
N/A
Primary Hex
1A 45 DF A3
MKA
N/A
Primary Hex
1A 45 DF A3
MKS
N/A
Primary Hex
1A 45 DF A3
Matroska stream file
video/x-matroska
Primary Hex
1A 45 DF A3
Skype localization data file
N/A
Primary Hex
4D 49 4C 45 53
MLV
N/A
Primary Hex
4D 4C 56 49