IANA is the official registry of MIME media types and maintains a list of all the official MIME types. Browsers pay a particular care when manipulating these files, attempting to safeguard the user to prevent dangerous behaviors. An unknown file type should use this type.
A textual file should be human-readable and must not contain binary data. Two primary MIME types are important for the role of default types: Here is a list of MIME types, associated by type of documents, ordered by their common extensions.
