Built-in filters - ForceHTMLMime filter
ForceHTMLMime filter forces all documents that are processed by the filter framework to present a
text/html MIME type. This is useful where the collection only includes HTML content or the web server is not returning the correct MIME type.
To enable the filter add
ForceHTMLMime to the filter chain.
ForceHTMLMime filter must appear in the filter chain before other filters that rely on the
text/html MIME type.