diff --git a/src/tawashi_implem/http_header.cpp b/src/tawashi_implem/http_header.cpp
index 050191c..d1e6f42 100644
--- a/src/tawashi_implem/http_header.cpp
+++ b/src/tawashi_implem/http_header.cpp
@@ -21,6 +21,7 @@
 #include "sprout/array/array.hpp"
 #include <utility>
 #include <spdlog/spdlog.h>
+#include <ciso646>
 
 namespace tawashi {
 	namespace {
@@ -46,19 +47,26 @@ namespace tawashi {
 	} //unnamed namespace
 
 	HttpHeader::HttpHeader() :
-		m_param("text/html"),
+		m_mime {"text", "html", {}},
 		m_status_code(HttpStatusCodes::CodeNone),
 		m_header_type(ContentType)
 	{
 	}
 
-	HttpHeader::HttpHeader (Types parType, HttpStatusCodes parCode, std::string&& parParam) :
-		m_param(std::move(parParam)),
+	HttpHeader::HttpHeader (Types parType, HttpStatusCodes parCode, SplitMime&& parMime) :
+		m_mime(std::move(parMime)),
 		m_status_code(parCode),
 		m_header_type(parType)
 	{
 	}
 
+	HttpHeader::HttpHeader (HttpStatusCodes parCode, std::string&& parRedirectLocation) :
+		m_redirect_location(std::move(parRedirectLocation)),
+		m_status_code(parCode),
+		m_header_type(Location)
+	{
+	}
+
 	void HttpHeader::set_status (HttpStatusCodes parCode) {
 		m_status_code = parCode;
 	}
@@ -67,9 +75,9 @@ namespace tawashi {
 		m_status_code = HttpStatusCodes::CodeNone;
 	}
 
-	void HttpHeader::set_type (Types parType, std::string&& parParameter) {
+	void HttpHeader::set_type (Types parType, SplitMime&& parParameter) {
 		m_header_type = parType;
-		m_param = std::move(parParameter);
+		m_mime = std::move(parParameter);
 	}
 
 	bool HttpHeader::body_required() const {
@@ -90,11 +98,11 @@ namespace tawashi {
 		switch (parHeader.type()) {
 		case HttpHeader::ContentType:
 			SPDLOG_TRACE(spdlog::get("statuslog"), "Response is a Content-type (data)");
-			parStream << "Content-type: " << parHeader.parameter() << '\n';
+			parStream << "Content-type: " << mime_to_string(parHeader) << '\n';
 			break;
 		case HttpHeader::Location:
 			SPDLOG_TRACE(spdlog::get("statuslog"), "Response is a Location (redirect)");
-			parStream << "Location: " << parHeader.parameter() << '\n';
+			parStream << "Location: " << parHeader.redirect_location() << '\n';
 			break;
 		}
 		parStream << '\n';
@@ -102,10 +110,28 @@ namespace tawashi {
 	}
 
 	HttpHeader make_header_type_html() {
-		return HttpHeader(HttpHeader::ContentType, HttpStatusCodes::CodeNone, "text/html");
+		return HttpHeader(
+			HttpHeader::ContentType,
+			HttpStatusCodes::CodeNone,
+			SplitMime { "text", "html", {}}
+		);
 	}
 
 	HttpHeader make_header_type_text_utf8() {
-		return HttpHeader(HttpHeader::ContentType, HttpStatusCodes::CodeNone, "text/plain; charset=utf-8");
+		return HttpHeader(
+			HttpHeader::ContentType,
+			HttpStatusCodes::CodeNone,
+			SplitMime {"text", "plain", MimeParametersMapType {{"charset", "utf-8"}}}
+		);
+	}
+
+	std::string mime_to_string (const HttpHeader& parHeader) {
+		bool write_ok;
+		std::string retval = mime_to_string(parHeader.mime(), write_ok);
+		if (not write_ok) {
+			assert(false);
+			return std::string();
+		}
+		return retval;
 	}
 } //namespace tawashi
diff --git a/src/tawashi_implem/http_header.hpp b/src/tawashi_implem/http_header.hpp
index 284beee..38d5a77 100644
--- a/src/tawashi_implem/http_header.hpp
+++ b/src/tawashi_implem/http_header.hpp
@@ -18,6 +18,7 @@
 #pragma once
 
 #include "enum.h"
+#include "mime_split.hpp"
 #include <cstdint>
 #include <string>
 #include <ostream>
@@ -49,20 +50,23 @@ namespace tawashi {
 		HttpHeader();
 		HttpHeader (const HttpHeader&) = default;
 		HttpHeader (HttpHeader&&) = default;
-		HttpHeader (Types parType, HttpStatusCodes parCode, std::string&& parParam);
+		HttpHeader (Types parType, HttpStatusCodes parCode, SplitMime&& parMime);
+		HttpHeader (HttpStatusCodes parCode, std::string&& parRedirectLocation);
 		~HttpHeader() noexcept = default;
 
 		Types type() const { return m_header_type; }
 		HttpStatusCodes status_code() const { return m_status_code; }
-		const std::string& parameter() const { return m_param; }
+		const std::string& redirect_location() const { return m_redirect_location; }
+		const SplitMime& mime() const { return m_mime; }
 		bool body_required() const;
 
 		void set_status (HttpStatusCodes parCode);
 		void unset_status();
-		void set_type (Types parType, std::string&& parParameter);
+		void set_type (Types parType, SplitMime&& parParameter);
 
 	private:
-		std::string m_param;
+		SplitMime m_mime;
+		std::string m_redirect_location;
 		HttpStatusCodes m_status_code;
 		Types m_header_type;
 	};
@@ -70,4 +74,5 @@ namespace tawashi {
 	std::ostream& operator<< (std::ostream& parStream, const HttpHeader& parHeader);
 	HttpHeader make_header_type_html();
 	HttpHeader make_header_type_text_utf8();
+	[[gnu::pure]] std::string mime_to_string (const HttpHeader& parHeader);
 } //namespace tawashi
diff --git a/src/tawashi_implem/response.cpp b/src/tawashi_implem/response.cpp
index 265f512..78b3c50 100644
--- a/src/tawashi_implem/response.cpp
+++ b/src/tawashi_implem/response.cpp
@@ -36,8 +36,6 @@
 
 namespace tawashi {
 	namespace {
-		const char g_def_response_type[] = "text/html";
-
 		//boost::string_ref fetch_page_basename (const cgi::Env& parEnv) {
 		//	const boost::string_ref& path = parEnv.path_info();
 
@@ -267,7 +265,7 @@ namespace tawashi {
 	HttpHeader Response::make_redirect (HttpStatusCodes parCode, const std::string& parLocation) {
 		std::ostringstream oss;
 		oss << base_uri() << '/' << parLocation;
-		return HttpHeader(HttpHeader::Location, parCode, oss.str());
+		return HttpHeader(parCode, oss.str());
 	}
 
 	HttpHeader Response::make_error_redirect (ErrorReasons parReason) {