diff --git a/index.js b/index.js
index e2dee22..b4860f6 100644
--- a/index.js
+++ b/index.js
@@ -28,7 +28,7 @@ module.exports = function() {
                       resourcePath,
                       destDir;
 
-                    if (isAbsoluteUrl(url) || isRootRelativeUrl(url)) {
+                    if (isAbsoluteUrl(url) || isRootRelativeUrl(url) || isBase64Url(url)) {
                       return url;
                     }
 
@@ -62,3 +62,8 @@ function isAbsoluteUrl(url) {
 function isRootRelativeUrl(url) {
   return url.charAt(0) === '/';
 }
+
+//skip base64
+function isBase64Url(url) {
+  return (/^data:image\//).test(url);
+}