A config setting which controls the available serializers for known media types. A serializer maps an incoming Accept header or extension or Content-Type header in a request to a serialization and an outgoing media type.

plugins add to this setting to add additional formats for input and output.

The default settings are:

    'serializers': {
        'text/html': ['html', 'text/html; charset=UTF-8']
        'text/plain': ['text', 'text/plain; charset=UTF-8'],
        'application/vnd.tiddyweb+json': ['json', 'application/json; charset=UTF-8'],
        'application/json': ['json', 'application/json; charset=UTF-8']},