The output format is specified by the type parameter. This parameter both controls the processing performed and specifies the HTTP content-type header value to be used in returning the output file to the HTTP client that submitted the f=convert request. The following table lists the supported output types and the corresponding header value.

There is no defined MIME type for the HTML Help format. Therefore the conversion processor returns a content-type of application/octet-stream.

For Web output, the conversion process return a zip archive containing the directory produced by the web publishing process and a number of subdirectories.

In addition, the conversion processor returns a zip archive (content-type application/zip) if the parameter zip-output=yes is specified on the request. Lastly, the conversion process may return an XHTML page (content-type text/xml) with a return code of 500 if it detects an error that prevents it from successfully completing the requested conversion.