= Magic Numbers =
Magic numbers might help identify file types
 * https://en.wikipedia.org/wiki/List_of_file_signatures
 * https://gist.github.com/leommoore/f9e57ba2aa4bf197ebc5

|| '''File type''' || '''Hex signature in start of file''' || '''MIME type''' ||
|| jpeg || ff d8 ff || image/jpeg ||
|| png || 89 50 4e 47 || image/png ||
|| bz2 || 42 5a 68 || application/octet-stream ||
|| gif || 47 49 46 38 37 61 || image/gif ||
|| gif || 47 49 46 38 39 61 || image/gif ||
|| zip jar apk docx ipa pptx xlsx || 50 4b 03 04 || application/octet-stream ||
|| Java class || ca fe ba be || application/octet-stream ||
|| tar || 75 73 74 61 72 || application/octet-stream ||
|| gzip || 1f 8b || application/octet-stream ||