diff --git a/content.go b/content.go
index 5d617c7..31b1142 100644
--- a/content.go
+++ b/content.go
@@ -3,6 +3,7 @@ package telegraph
 import (
 	"bytes"
 	"errors"
+	"io"
 	"strings"
 
 	"golang.org/x/net/html"
@@ -46,6 +47,12 @@ func ContentFormat(data interface{}) ([]Node, error) {
 			return nil, err
 		}
 		doc = *dom
+	case io.Reader:
+		dom, err := html.Parse(dst)
+		if err != nil {
+			return nil, err
+		}
+		doc = *dom
 	default:
 		return nil, errors.New("invalid data type, use []byte or string")
 	}