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.
JPG2
N/A
Primary Hex
00 00 00 0C 6A 50 20 20 0D 0A 87 0A
JPGM
image/jpm
Primary Hex
00 00 00 0C 6A 50 20 20 0D 0A 87 0A
JPM
image/jpm
Primary Hex
00 00 00 0C 6A 50 20 20 0D 0A 87 0A
JPX
N/A
Primary Hex
00 00 00 0C 6A 50 20 20 0D 0A 87 0A
JS
text/javascript
Primary Hex
2F 2A 20 6A 51 75 65 72 79 20
JSP
text/x-jsp
Primary Hex
3C 25 40
MS Windows journal file
N/A
Primary Hex
4E 42 2A 00
JUNIT
text/plain
Primary Hex
54 68 69 73 20 69 73 20 54 65 58 2C
JX
text/plain
Primary Hex
54 68 69 73 20 69 73 20 54 65 58 2C