diff --git a/generators_examples_test.go b/generators_examples_test.go
new file mode 100644
index 0000000..67d5995
--- /dev/null
+++ b/generators_examples_test.go
@@ -0,0 +1,20 @@
+package nomino
+
+import "fmt"
+
+func ExampleWithGenerator_custom_generator() {
+	gen := func() (string, error) {
+		return "hello", nil
+	}
+	option := WithGenerator(gen)
+
+	str, _ := Make(NewConfig(option))
+	fmt.Println(str)
+
+	str, _ = Make(NewConfig(option, WithoutExtension()))
+	fmt.Println(str)
+
+	// Output:
+	// hello.txt
+	// hello
+}
diff --git a/make_examples_test.go b/make_examples_test.go
new file mode 100644
index 0000000..07c85ba
--- /dev/null
+++ b/make_examples_test.go
@@ -0,0 +1,9 @@
+package nomino
+
+import "fmt"
+
+func ExampleMake_basic() {
+	// Use default config
+	out, _ := Make(NewConfig())
+	fmt.Println(out)
+}