diff --git a/AK/JsonParser.cpp b/AK/JsonParser.cpp
index 9d604fa2a8..7960a14cfe 100644
--- a/AK/JsonParser.cpp
+++ b/AK/JsonParser.cpp
@@ -92,7 +92,18 @@ String JsonParser::consume_quoted_string()
         }
     }
     consume_specific('"');
-    return String::copy(buffer);
+
+    if (buffer.is_empty())
+        return {};
+
+    auto& last_string_starting_with_character = m_last_string_starting_with_character[buffer.first()];
+    if (last_string_starting_with_character.length() == buffer.size()) {
+        if (!memcmp(last_string_starting_with_character.characters(), buffer.data(), buffer.size()))
+            return last_string_starting_with_character;
+    }
+
+    last_string_starting_with_character = String::copy(buffer);
+    return last_string_starting_with_character;
 }
 
 JsonObject JsonParser::parse_object()
diff --git a/AK/JsonParser.h b/AK/JsonParser.h
index 343530d7f4..26756abf36 100644
--- a/AK/JsonParser.h
+++ b/AK/JsonParser.h
@@ -40,6 +40,8 @@ private:
 
     StringView m_input;
     int m_index { 0 };
+
+    String m_last_string_starting_with_character[256];
 };
 
 }