diff --git a/DevTools/IPCCompiler/main.cpp b/DevTools/IPCCompiler/main.cpp
index 016140976a..21e322bc0a 100644
--- a/DevTools/IPCCompiler/main.cpp
+++ b/DevTools/IPCCompiler/main.cpp
@@ -392,14 +392,7 @@ int main(int argc, char** argv)
             dbg() << "        stream << endpoint_magic();";
             dbg() << "        stream << (int)MessageID::" << name << ";";
             for (auto& parameter : parameters) {
-                if (parameter.type == "String") {
-                    dbg() << "        if (m_" << parameter.name << ".is_null()) {";
-                    dbg() << "            stream << (i32)-1;";
-                    dbg() << "        } else {";
-                    dbg() << "            stream << static_cast<i32>(m_" << parameter.name << ".length());";
-                    dbg() << "            stream << m_" << parameter.name << ";";
-                    dbg() << "        }";
-                } else if (parameter.type == "Gfx::Color") {
+                if (parameter.type == "Gfx::Color") {
                     dbg() << "        stream << m_" << parameter.name << ".value();";
                 } else if (parameter.type == "Gfx::Size") {
                     dbg() << "        stream << m_" << parameter.name << ".width();";
diff --git a/Libraries/LibIPC/Encoder.cpp b/Libraries/LibIPC/Encoder.cpp
new file mode 100644
index 0000000000..61cc915d94
--- /dev/null
+++ b/Libraries/LibIPC/Encoder.cpp
@@ -0,0 +1,142 @@
+/*
+ * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <AK/String.h>
+#include <LibIPC/Encoder.h>
+
+namespace IPC {
+
+Encoder& Encoder::operator<<(bool value)
+{
+    return *this << (u8)value;
+}
+
+Encoder& Encoder::operator<<(u8 value)
+{
+    m_buffer.append(value);
+    return *this;
+}
+
+Encoder& Encoder::operator<<(u16 value)
+{
+    m_buffer.ensure_capacity(m_buffer.size() + 2);
+    m_buffer.unchecked_append((u8)value);
+    m_buffer.unchecked_append((u8)(value >> 8));
+    return *this;
+}
+
+Encoder& Encoder::operator<<(u32 value)
+{
+    m_buffer.ensure_capacity(m_buffer.size() + 4);
+    m_buffer.unchecked_append((u8)value);
+    m_buffer.unchecked_append((u8)(value >> 8));
+    m_buffer.unchecked_append((u8)(value >> 16));
+    m_buffer.unchecked_append((u8)(value >> 24));
+    return *this;
+}
+
+Encoder& Encoder::operator<<(u64 value)
+{
+    m_buffer.ensure_capacity(m_buffer.size() + 8);
+    m_buffer.unchecked_append((u8)value);
+    m_buffer.unchecked_append((u8)(value >> 8));
+    m_buffer.unchecked_append((u8)(value >> 16));
+    m_buffer.unchecked_append((u8)(value >> 24));
+    m_buffer.unchecked_append((u8)(value >> 32));
+    m_buffer.unchecked_append((u8)(value >> 40));
+    m_buffer.unchecked_append((u8)(value >> 48));
+    m_buffer.unchecked_append((u8)(value >> 56));
+    return *this;
+}
+
+Encoder& Encoder::operator<<(i8 value)
+{
+    m_buffer.append((u8)value);
+    return *this;
+}
+
+Encoder& Encoder::operator<<(i16 value)
+{
+    m_buffer.ensure_capacity(m_buffer.size() + 2);
+    m_buffer.unchecked_append((u8)value);
+    m_buffer.unchecked_append((u8)(value >> 8));
+    return *this;
+}
+
+Encoder& Encoder::operator<<(i32 value)
+{
+    m_buffer.ensure_capacity(m_buffer.size() + 4);
+    m_buffer.unchecked_append((u8)value);
+    m_buffer.unchecked_append((u8)(value >> 8));
+    m_buffer.unchecked_append((u8)(value >> 16));
+    m_buffer.unchecked_append((u8)(value >> 24));
+    return *this;
+}
+
+Encoder& Encoder::operator<<(i64 value)
+{
+    m_buffer.ensure_capacity(m_buffer.size() + 8);
+    m_buffer.unchecked_append((u8)value);
+    m_buffer.unchecked_append((u8)(value >> 8));
+    m_buffer.unchecked_append((u8)(value >> 16));
+    m_buffer.unchecked_append((u8)(value >> 24));
+    m_buffer.unchecked_append((u8)(value >> 32));
+    m_buffer.unchecked_append((u8)(value >> 40));
+    m_buffer.unchecked_append((u8)(value >> 48));
+    m_buffer.unchecked_append((u8)(value >> 56));
+    return *this;
+}
+
+Encoder& Encoder::operator<<(float value)
+{
+    union bits {
+        float as_float;
+        u32 as_u32;
+    } u;
+    u.as_float = value;
+    return *this << u.as_u32;
+}
+
+Encoder& Encoder::operator<<(const char* value)
+{
+    return *this << StringView(value);
+}
+
+Encoder& Encoder::operator<<(const StringView& value)
+{
+    m_buffer.append((const u8*)value.characters_without_null_termination(), value.length());
+    return *this;
+}
+
+Encoder& Encoder::operator<<(const String& value)
+{
+    if (value.is_null())
+        return *this << (i32)-1;
+    *this << static_cast<i32>(value.length());
+    return *this << value.view();
+}
+
+}
diff --git a/Libraries/LibIPC/Encoder.h b/Libraries/LibIPC/Encoder.h
index d4d1b2f4b6..c77bccd951 100644
--- a/Libraries/LibIPC/Encoder.h
+++ b/Libraries/LibIPC/Encoder.h
@@ -37,107 +37,19 @@ public:
     {
     }
 
-    Encoder& operator<<(bool value)
-    {
-        return *this << (u8)value;
-    }
-
-    Encoder& operator<<(u8 value)
-    {
-        m_buffer.append(value);
-        return *this;
-    }
-
-    Encoder& operator<<(u16 value)
-    {
-        m_buffer.ensure_capacity(m_buffer.size() + 2);
-        m_buffer.unchecked_append((u8)value);
-        m_buffer.unchecked_append((u8)(value >> 8));
-        return *this;
-    }
-
-    Encoder& operator<<(u32 value)
-    {
-        m_buffer.ensure_capacity(m_buffer.size() + 4);
-        m_buffer.unchecked_append((u8)value);
-        m_buffer.unchecked_append((u8)(value >> 8));
-        m_buffer.unchecked_append((u8)(value >> 16));
-        m_buffer.unchecked_append((u8)(value >> 24));
-        return *this;
-    }
-
-    Encoder& operator<<(u64 value)
-    {
-        m_buffer.ensure_capacity(m_buffer.size() + 8);
-        m_buffer.unchecked_append((u8)value);
-        m_buffer.unchecked_append((u8)(value >> 8));
-        m_buffer.unchecked_append((u8)(value >> 16));
-        m_buffer.unchecked_append((u8)(value >> 24));
-        m_buffer.unchecked_append((u8)(value >> 32));
-        m_buffer.unchecked_append((u8)(value >> 40));
-        m_buffer.unchecked_append((u8)(value >> 48));
-        m_buffer.unchecked_append((u8)(value >> 56));
-        return *this;
-    }
-
-    Encoder& operator<<(i8 value)
-    {
-        m_buffer.append((u8)value);
-        return *this;
-    }
-
-    Encoder& operator<<(i16 value)
-    {
-        m_buffer.ensure_capacity(m_buffer.size() + 2);
-        m_buffer.unchecked_append((u8)value);
-        m_buffer.unchecked_append((u8)(value >> 8));
-        return *this;
-    }
-
-    Encoder& operator<<(i32 value)
-    {
-        m_buffer.ensure_capacity(m_buffer.size() + 4);
-        m_buffer.unchecked_append((u8)value);
-        m_buffer.unchecked_append((u8)(value >> 8));
-        m_buffer.unchecked_append((u8)(value >> 16));
-        m_buffer.unchecked_append((u8)(value >> 24));
-        return *this;
-    }
-
-    Encoder& operator<<(i64 value)
-    {
-        m_buffer.ensure_capacity(m_buffer.size() + 8);
-        m_buffer.unchecked_append((u8)value);
-        m_buffer.unchecked_append((u8)(value >> 8));
-        m_buffer.unchecked_append((u8)(value >> 16));
-        m_buffer.unchecked_append((u8)(value >> 24));
-        m_buffer.unchecked_append((u8)(value >> 32));
-        m_buffer.unchecked_append((u8)(value >> 40));
-        m_buffer.unchecked_append((u8)(value >> 48));
-        m_buffer.unchecked_append((u8)(value >> 56));
-        return *this;
-    }
-
-    Encoder& operator<<(float value)
-    {
-        union bits {
-            float as_float;
-            u32 as_u32;
-        } u;
-        u.as_float = value;
-        return *this << u.as_u32;
-    }
-
-    Encoder& operator<<(const char* value)
-    {
-        return *this << StringView(value);
-    }
-
-    Encoder& operator<<(const StringView& value)
-    {
-        m_buffer.append((const u8*)value.characters_without_null_termination(), value.length());
-        return *this;
-    }
+    Encoder& operator<<(bool);
+    Encoder& operator<<(u8);
+    Encoder& operator<<(u16);
+    Encoder& operator<<(u32);
+    Encoder& operator<<(u64);
+    Encoder& operator<<(i8);
+    Encoder& operator<<(i16);
+    Encoder& operator<<(i32);
+    Encoder& operator<<(i64);
+    Encoder& operator<<(float);
+    Encoder& operator<<(const char*);
+    Encoder& operator<<(const StringView&);
+    Encoder& operator<<(const String&);
 
 private:
     MessageBuffer& m_buffer;
diff --git a/Libraries/LibIPC/Makefile b/Libraries/LibIPC/Makefile
index 1354dcca1c..0250443c1f 100644
--- a/Libraries/LibIPC/Makefile
+++ b/Libraries/LibIPC/Makefile
@@ -1,4 +1,5 @@
 OBJS = \
+    Encoder.o \
     Endpoint.o \
     Message.o