diff --git a/CHANGELOG.md b/CHANGELOG.md
index 36f84c83..288d241b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+Version 81:
+
+* Pass string_view by value
+
+--------------------------------------------------------------------------------
+
 Version 80:
 
 * Javadoc tidying
diff --git a/include/beast/core/impl/string_param.ipp b/include/beast/core/impl/string_param.ipp
index 8bcccca4..46332ec4 100644
--- a/include/beast/core/impl/string_param.ipp
+++ b/include/beast/core/impl/string_param.ipp
@@ -41,7 +41,7 @@ print(T const& t)
 inline
 void
 string_param::
-print(string_view const& sv)
+print(string_view sv)
 {
     sv_ = sv;
 }
diff --git a/include/beast/core/string.hpp b/include/beast/core/string.hpp
index 60116098..bf788bc5 100644
--- a/include/beast/core/string.hpp
+++ b/include/beast/core/string.hpp
@@ -60,8 +60,8 @@ ascii_tolower(char c)
 template<class = void>
 bool
 iequals(
-    beast::string_view const& lhs,
-    beast::string_view const& rhs)
+    beast::string_view lhs,
+    beast::string_view rhs)
 {
     auto n = lhs.size();
     if(rhs.size() != n)
@@ -102,8 +102,8 @@ iequals(
 inline
 bool
 iequals(
-    beast::string_view const& lhs,
-    beast::string_view const& rhs)
+    beast::string_view lhs,
+    beast::string_view rhs)
 {
     return detail::iequals(lhs, rhs);
 }
@@ -116,8 +116,8 @@ struct iless
 {
     bool
     operator()(
-        string_view const& lhs,
-        string_view const& rhs) const
+        string_view lhs,
+        string_view rhs) const
     {
         using std::begin;
         using std::end;
@@ -139,8 +139,8 @@ struct iequal
 {
     bool
     operator()(
-        string_view const& lhs,
-        string_view const& rhs) const
+        string_view lhs,
+        string_view rhs) const
     {
         return iequals(lhs, rhs);
     }
diff --git a/include/beast/core/string_param.hpp b/include/beast/core/string_param.hpp
index dedd060a..9c90ee64 100644
--- a/include/beast/core/string_param.hpp
+++ b/include/beast/core/string_param.hpp
@@ -45,7 +45,7 @@ class string_param
     print(T const&);
 
     void
-    print(string_view const&);
+    print(string_view);
 
     template<class T>
     typename std::enable_if<
diff --git a/include/beast/http/impl/field.ipp b/include/beast/http/impl/field.ipp
index 6d4f2c50..ba4a5ac0 100644
--- a/include/beast/http/impl/field.ipp
+++ b/include/beast/http/impl/field.ipp
@@ -28,7 +28,7 @@ struct field_table
     struct hash
     {
         std::size_t
-        operator()(string_view const& s) const
+        operator()(string_view s) const
         {
             auto const n = s.size();
             return
@@ -43,8 +43,8 @@ struct field_table
         // assumes inputs have equal length
         bool
         operator()(
-            string_view const& lhs,
-            string_view const& rhs) const
+            string_view lhs,
+            string_view rhs) const
         {
             auto p1 = lhs.data();
             auto p2 = rhs.data();
diff --git a/include/beast/http/impl/fields.ipp b/include/beast/http/impl/fields.ipp
index a6697c6c..1cee2ba0 100644
--- a/include/beast/http/impl/fields.ipp
+++ b/include/beast/http/impl/fields.ipp
@@ -737,7 +737,7 @@ template<class String, class Pred>
 void
 filter_token_list(
     String& s,
-    string_view const& value,
+    string_view value,
     Pred&& pred)
 {
     token_list te{value};
@@ -764,7 +764,7 @@ template<class String, class Pred>
 void
 filter_token_list_last(
     String& s,
-    string_view const& value,
+    string_view value,
     Pred&& pred)
 {
     token_list te{value};
@@ -801,7 +801,7 @@ filter_token_list_last(
 template<class String>
 void
 keep_alive_impl(
-    String& s, string_view const& value,
+    String& s, string_view value,
     unsigned version, bool keep_alive)
 {
     if(version < 11)
@@ -1025,7 +1025,7 @@ set_chunked_impl(bool value)
     {
         static_string<max_static_buffer> buf;
         detail::filter_token_list_last(buf, it->value(),
-            [](string_view const& s)
+            [](string_view s)
             {
                 return iequals(s, "chunked");
             });
@@ -1050,7 +1050,7 @@ set_chunked_impl(bool value)
     #endif
         s.reserve(it->value().size());
         detail::filter_token_list_last(s, it->value(),
-            [](string_view const& s)
+            [](string_view s)
             {
                 return iequals(s, "chunked");
             });