A converter "converts" a file format to and from the Fluent format.
For a list of existing converters, and thus supported formats, see the @inlang/fluent-syntax-converter package.
Inlang is built on top of Mozilla's Fluent system. Fluent has its own file format and syntax. In order to support other formats and syntaxes, converters are required to parse and serialize those other formats to and from Fluent.