Check image content type for backslashes

1 files changed, 6 insertions, 0 deletions

diff --git a/lib/images.js b/lib/images.js
index 40aa378..7c49dbe 100644
--- a/lib/images.js
+++ b/lib/images.js
@@ -29,3 +29,9 @@ exports.dataUri = imgElement(function(element) {
         };
     });
 });
+
+function imageFilenameExtension(image) {
+    return image.contentType.split(/\/|\\/)[1];
+}
+
+exports.imageFilenameExtension = imageFilenameExtension;