diff --git a/kernel/api/extension.go b/kernel/api/extension.go
index 8dd8aea49..d8aa3e63f 100644
--- a/kernel/api/extension.go
+++ b/kernel/api/extension.go
@@ -122,7 +122,7 @@ func extensionCopy(c *gin.Context) {
 	}
 
 	luteEngine := util.NewStdLute()
-	md := luteEngine.HTML2Md(dom)
+	md, _ := model.HTML2Markdown(dom)
 	md = strings.TrimSpace(md)
 
 	var unlinks []*ast.Node
diff --git a/kernel/model/import.go b/kernel/model/import.go
index ffa6e9008..150912a9b 100644
--- a/kernel/model/import.go
+++ b/kernel/model/import.go
@@ -33,6 +33,7 @@ import (
 	"os"
 	"path"
 	"path/filepath"
+	"regexp"
 	"runtime/debug"
 	"sort"
 	"strconv"
@@ -927,8 +928,11 @@ func processBase64Img(n *ast.Node, dest string, assetDirPath string, err error)
 	os.MkdirAll(base64TmpDir, 0755)
 
 	sep := strings.Index(dest, ";base64,")
+	str := strings.TrimSpace(dest[sep+8:])
+	re := regexp.MustCompile(`(?i)%0A`)
+	str = re.ReplaceAllString(str, "\n")
 	var decodeErr error
-	unbased, decodeErr := base64.StdEncoding.DecodeString(dest[sep+8:])
+	unbased, decodeErr := base64.StdEncoding.DecodeString(str)
 	if nil != decodeErr {
 		logging.LogErrorf("decode base64 image failed: %s", decodeErr)
 		return