# About This file was generated automatically based on this two sources: 1. /etc/nginx/mime.types 2. http://www.garykessler.net/library/file_sigs.html # File format This is a JSON object by following structure: ``` [string ext] : { signs: [sign] mime: string } ``` A `sign` is a string in this format (without any space): ``` [int o],[hex s] ``` where `o` is `x byte offset` (Commonly zero) ## Example Sign MP4: ``` [4 byte offset] 66 74 79 70 69 73 6F 6D ``` becomes: ``` 4,6674797069736F6D ```