diff --git a/src/angular-base64-upload.js b/src/angular-base64-upload.js
index a57d313..6ef2a38 100644
--- a/src/angular-base64-upload.js
+++ b/src/angular-base64-upload.js
@@ -63,7 +63,7 @@
               var buffer = e.target.result;
               var promise;
 
-              fileObject.base64 = $window._arrayBufferToBase64(buffer);
+              fileObject.base64 = fileObject.filetype.indexOf('pdf') >= 0 ? buffer : $window._arrayBufferToBase64(buffer);
 
               if (attrs.parser) {
                 promise = $q.when(scope.parser()(file, fileObject));
@@ -130,7 +130,10 @@
 
               _attachEventHandlers(reader, file, fileObject);
 
-              reader.readAsArrayBuffer(file);
+                if(file.type.indexOf('pdf') >= 0)
+                    reader.readAsDataURL(file);
+                else
+                  reader.readAsArrayBuffer(file);
 
             }