If the input file is a zip archive, you must specify the input-entry=entry parameter. If the archive member name specified by input-entry does not end in one of the recognized file extensions, you must also specify the input-entry-type=type parameter.

When the input file is a zip archive, the conversion process creates a temporary directory and extracts the archive content to that directory. Then it proceeds as if the values of the file and file-type functions had been specified as the values of the input-entry and input-entry-type parameters.