diff --git a/coder.go b/coder.go
index 9bfb940..bc84df6 100644
--- a/coder.go
+++ b/coder.go
@@ -27,10 +27,15 @@ func (c GobCoder) Decode(reader io.Reader, v interface{}) error {
 
 // JsonCoder implements Coder with json
 type JsonCoder struct {
+	Intent bool
 }
 
 func (c JsonCoder) Encode(writer io.Writer, v interface{}) error {
-	return json.NewEncoder(writer).Encode(v)
+	enc := json.NewEncoder(writer)
+	if c.Intent {
+		enc.SetIndent("", "\t")
+	}
+	return enc.Encode(v)
 }
 
 func (c JsonCoder) Decode(reader io.Reader, v interface{}) error {
diff --git a/coder_test.go b/coder_test.go
index 5d8b436..767be27 100644
--- a/coder_test.go
+++ b/coder_test.go
@@ -33,28 +33,51 @@ func TestGobCoder(t *testing.T) {
 }
 
 func TestJsonCoder(t *testing.T) {
-	c := JsonCoder{}
-
 	want := &Person{
 		Id:   "jason",
 		Name: "Jason Song",
 		Age:  25,
 	}
 
-	buffer := bytes.NewBuffer(nil)
-	if err := c.Encode(buffer, want); err != nil {
-		t.Fatal(err)
-	}
+	{
+		c := JsonCoder{}
 
-	t.Logf("%q", buffer.String())
+		buffer := bytes.NewBuffer(nil)
+		if err := c.Encode(buffer, want); err != nil {
+			t.Fatal(err)
+		}
 
-	got := &Person{}
-	if err := c.Decode(buffer, got); err != nil {
-		t.Fatal(err)
-	}
+		t.Logf("%q", buffer.String())
 
-	if !reflect.DeepEqual(got, want) {
-		t.Errorf("got %+v, want %+v", got, want)
+		got := &Person{}
+		if err := c.Decode(buffer, got); err != nil {
+			t.Fatal(err)
+		}
+
+		if !reflect.DeepEqual(got, want) {
+			t.Errorf("got %+v, want %+v", got, want)
+		}
+	}
+	{
+		c := JsonCoder{
+			Intent: true,
+		}
+
+		buffer := bytes.NewBuffer(nil)
+		if err := c.Encode(buffer, want); err != nil {
+			t.Fatal(err)
+		}
+
+		t.Logf("%q", buffer.String())
+
+		got := &Person{}
+		if err := c.Decode(buffer, got); err != nil {
+			t.Fatal(err)
+		}
+
+		if !reflect.DeepEqual(got, want) {
+			t.Errorf("got %+v, want %+v", got, want)
+		}
 	}
 }