diff --git a/doc/qbk/quickref.xml b/doc/qbk/quickref.xml
index 3388e259..8a405220 100644
--- a/doc/qbk/quickref.xml
+++ b/doc/qbk/quickref.xml
@@ -51,6 +51,7 @@
         <bridgehead renderas="sect3">Types (1/2)</bridgehead>
         <simplelist type="vert" columns="1">
           <member><link linkend="url.ref.boost__urls__authority_view">authority_view</link></member>
+          <member><link linkend="url.ref.boost__urls__ignore_case_param">ignore_case_param</link></member>
           <member><link linkend="url.ref.boost__urls__ipv4_address">ipv4_address</link></member>
           <member><link linkend="url.ref.boost__urls__ipv6_address">ipv6_address</link></member>
           <member><link linkend="url.ref.boost__urls__params">params</link></member>
@@ -80,6 +81,7 @@
         <bridgehead renderas="sect3">Constants</bridgehead>
         <simplelist type="vert" columns="1">
           <member><link linkend="url.ref.boost__urls__error">error</link></member>
+          <member><link linkend="url.ref.boost__urls__ignore_case">ignore_case</link></member>
           <member><link linkend="url.ref.boost__urls__host_type">host_type</link></member>
           <member><link linkend="url.ref.boost__urls__scheme">scheme</link></member>
         </simplelist>
diff --git a/include/boost/url.hpp b/include/boost/url.hpp
index ff9a9586..ebe1ccab 100644
--- a/include/boost/url.hpp
+++ b/include/boost/url.hpp
@@ -18,6 +18,7 @@
 #include <boost/url/error.hpp>
 #include <boost/url/error_types.hpp>
 #include <boost/url/host_type.hpp>
+#include <boost/url/ignore_case.hpp>
 #include <boost/url/ipv4_address.hpp>
 #include <boost/url/ipv6_address.hpp>
 #include <boost/url/params.hpp>
diff --git a/include/boost/url/ignore_case.hpp b/include/boost/url/ignore_case.hpp
new file mode 100644
index 00000000..e33cf079
--- /dev/null
+++ b/include/boost/url/ignore_case.hpp
@@ -0,0 +1,103 @@
+//
+// Copyright (c) 2019 Vinnie Falco (vinnie.falco@gmail.com)
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+// Official repository: https://github.com/CPPAlliance/url
+//
+
+#ifndef BOOST_URL_IGNORE_CASE_HPP
+#define BOOST_URL_IGNORE_CASE_HPP
+
+#include <boost/url/detail/config.hpp>
+
+namespace boost {
+namespace urls {
+
+#ifndef BOOST_URL_DOCS
+struct ignore_case_t
+{
+};
+#endif
+
+/** Ignore case when comparing
+
+    This value may be optionally passed to
+    functions accepting a parameter of type
+    @ref ignore_case_param to indicate that
+    comparisons should be case-insensitive.
+*/
+constexpr
+#ifdef BOOST_URL_DOCS
+__implementation_defined__
+#else
+ignore_case_t
+#endif
+ignore_case{};
+
+/** An optional parameter to determine case-sensitivity
+
+    Functions may use parameters of this type
+    to allow the user to optionally indicate
+    that comparisons should be case-insensitive
+    when the value @ref ignore_case is passed.
+*/
+struct ignore_case_param
+{
+    /** True if an algorithm should ignore case
+
+        Functions accepting a parameter of type
+        `ignore_case_param` can check `value`
+        to determine if the caller has indicated
+        that comparisons should ignore case.
+    */
+    bool value = false;
+
+    /** Constructor
+
+        By default, comparisons are
+        case-sensitive.
+
+        @par Example
+        This function performs case-sensitive
+        comparisons when called with no
+        arguments:
+        @code
+        void f( ignore_case_param = {} );
+        @endcode
+    */
+    constexpr
+    ignore_case_param() noexcept = default;
+
+    /** Constructor
+
+        Construction from @ref ignore_case
+        indicates that comparisons should
+        be case-insensitive.
+
+        @par Example
+        When @ref ignore_case is passed as
+        an argument, this function ignores
+        case when performing comparisons:
+        @code
+        void f( ignore_case_param = {} );
+        @endcode
+    */
+    constexpr
+    ignore_case_param(
+    #ifdef BOOST_URL_DOCS
+        __implementation_defined__
+    #else
+        ignore_case_t
+    #endif
+        ) noexcept
+        : value(true)
+    {
+    }
+};
+
+} // urls
+} // boost
+
+#endif
diff --git a/test/unit/CMakeLists.txt b/test/unit/CMakeLists.txt
index 262fb0df..ecdb8716 100644
--- a/test/unit/CMakeLists.txt
+++ b/test/unit/CMakeLists.txt
@@ -26,6 +26,7 @@ set(BOOST_URL_TESTS_FILES
     error_types.cpp
     grammar.cpp
     host_type.cpp
+    ignore_case.cpp
     ipv4_address.cpp
     ipv6_address.cpp
     natvis.cpp
diff --git a/test/unit/Jamfile b/test/unit/Jamfile
index 133cf738..f2601497 100644
--- a/test/unit/Jamfile
+++ b/test/unit/Jamfile
@@ -30,6 +30,7 @@ local SOURCES =
     decode_view.cpp
     grammar.cpp
     host_type.cpp
+    ignore_case.cpp
     ipv4_address.cpp
     ipv6_address.cpp
     optional.cpp
diff --git a/test/unit/ignore_case.cpp b/test/unit/ignore_case.cpp
new file mode 100644
index 00000000..27dae39b
--- /dev/null
+++ b/test/unit/ignore_case.cpp
@@ -0,0 +1,11 @@
+//
+// Copyright (c) 2019 Vinnie Falco (vinnie.falco@gmail.com)
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+// Official repository: https://github.com/CPPAlliance/url
+//
+
+// Test that header file is self-contained.
+#include <boost/url/ignore_case.hpp>
diff --git a/test/unit/params.cpp b/test/unit/params.cpp
index 4f64a543..82b77154 100644
--- a/test/unit/params.cpp
+++ b/test/unit/params.cpp
@@ -534,3 +534,32 @@ TEST_SUITE(
 
 } // urls
 } // boost
+
+/*
+
+    operator=(std::initializer_list)
+    assign(std::initializer_list)
+    assign(FwdIt, FwdIt)
+    insert(iterator, value_type)
+    insert(iterator, initializer_list)
+    insert(iterator, FwdIt, FwdIt)
+    replace(iterator, value_type)
+    replace(iterator, iterator, FwdIt, FwdIt)
+    replace(iterator, initializer_list)
+    replace(iterator, value_type)
+    erase(iterator)
+    erase(iterator, iterator)
+    push_back(value_type)
+
+    // key/value
+    remove_value(iterator)
+    replace_value(iterator, value)
+    replace(iterator, key, value)
+    replace(iterator, key)
+    insert(iterator, key, value)
+    insert(iterator, key)
+    erase(key)
+    append(key)
+    append(key, value)
+
+*/
\ No newline at end of file