diff --git a/iOS/Resources/Assets.xcassets/addFolderImage.imageset/Contents.json b/iOS/Resources/Assets.xcassets/addFolderImage.imageset/Contents.json
deleted file mode 100644
index 3b85907d2..000000000
--- a/iOS/Resources/Assets.xcassets/addFolderImage.imageset/Contents.json
+++ /dev/null
@@ -1,12 +0,0 @@
-{
-  "images" : [
-    {
-      "idiom" : "universal",
-      "filename" : "addFolder.pdf"
-    }
-  ],
-  "info" : {
-    "version" : 1,
-    "author" : "xcode"
-  }
-}
\ No newline at end of file
diff --git a/iOS/Resources/Assets.xcassets/addFolderImage.imageset/addFolder.pdf b/iOS/Resources/Assets.xcassets/addFolderImage.imageset/addFolder.pdf
deleted file mode 100644
index 2787e4d5a..000000000
Binary files a/iOS/Resources/Assets.xcassets/addFolderImage.imageset/addFolder.pdf and /dev/null differ
diff --git a/iOS/Resources/Assets.xcassets/browserImage.imageset/Contents.json b/iOS/Resources/Assets.xcassets/browserImage.imageset/Contents.json
index 0718c2065..ad0c7555f 100644
--- a/iOS/Resources/Assets.xcassets/browserImage.imageset/Contents.json
+++ b/iOS/Resources/Assets.xcassets/browserImage.imageset/Contents.json
@@ -8,5 +8,8 @@
   "info" : {
     "version" : 1,
     "author" : "xcode"
+  },
+  "properties" : {
+    "preserves-vector-representation" : true
   }
 }
\ No newline at end of file
diff --git a/iOS/Resources/Assets.xcassets/circleClosedImage.imageset/Contents.json b/iOS/Resources/Assets.xcassets/circleClosedImage.imageset/Contents.json
index 96164f72b..3276935e9 100644
--- a/iOS/Resources/Assets.xcassets/circleClosedImage.imageset/Contents.json
+++ b/iOS/Resources/Assets.xcassets/circleClosedImage.imageset/Contents.json
@@ -8,5 +8,8 @@
   "info" : {
     "version" : 1,
     "author" : "xcode"
+  },
+  "properties" : {
+    "preserves-vector-representation" : true
   }
 }
\ No newline at end of file
diff --git a/iOS/Resources/Assets.xcassets/circleOpenImage.imageset/Contents.json b/iOS/Resources/Assets.xcassets/circleOpenImage.imageset/Contents.json
index af022ee47..50e5308d1 100644
--- a/iOS/Resources/Assets.xcassets/circleOpenImage.imageset/Contents.json
+++ b/iOS/Resources/Assets.xcassets/circleOpenImage.imageset/Contents.json
@@ -8,5 +8,8 @@
   "info" : {
     "version" : 1,
     "author" : "xcode"
+  },
+  "properties" : {
+    "preserves-vector-representation" : true
   }
 }
\ No newline at end of file
diff --git a/iOS/Resources/Assets.xcassets/nextArticleImage.imageset/Contents.json b/iOS/Resources/Assets.xcassets/nextArticleImage.imageset/Contents.json
index 63aa2f216..7b74a078a 100644
--- a/iOS/Resources/Assets.xcassets/nextArticleImage.imageset/Contents.json
+++ b/iOS/Resources/Assets.xcassets/nextArticleImage.imageset/Contents.json
@@ -8,5 +8,8 @@
   "info" : {
     "version" : 1,
     "author" : "xcode"
+  },
+  "properties" : {
+    "preserves-vector-representation" : true
   }
 }
\ No newline at end of file
diff --git a/iOS/Resources/Assets.xcassets/nextUnreadImage.imageset/Contents.json b/iOS/Resources/Assets.xcassets/nextUnreadImage.imageset/Contents.json
index f1d20c931..1b632e975 100644
--- a/iOS/Resources/Assets.xcassets/nextUnreadImage.imageset/Contents.json
+++ b/iOS/Resources/Assets.xcassets/nextUnreadImage.imageset/Contents.json
@@ -8,5 +8,8 @@
   "info" : {
     "version" : 1,
     "author" : "xcode"
+  },
+  "properties" : {
+    "preserves-vector-representation" : true
   }
 }
\ No newline at end of file
diff --git a/iOS/Resources/Assets.xcassets/prevArticleImage.imageset/Contents.json b/iOS/Resources/Assets.xcassets/prevArticleImage.imageset/Contents.json
index 07fb7c6ca..3f375e776 100644
--- a/iOS/Resources/Assets.xcassets/prevArticleImage.imageset/Contents.json
+++ b/iOS/Resources/Assets.xcassets/prevArticleImage.imageset/Contents.json
@@ -8,5 +8,8 @@
   "info" : {
     "version" : 1,
     "author" : "xcode"
+  },
+  "properties" : {
+    "preserves-vector-representation" : true
   }
 }
\ No newline at end of file
diff --git a/iOS/Resources/Assets.xcassets/settingsImage.imageset/Contents.json b/iOS/Resources/Assets.xcassets/settingsImage.imageset/Contents.json
index 424b5d41f..6d34a9d99 100644
--- a/iOS/Resources/Assets.xcassets/settingsImage.imageset/Contents.json
+++ b/iOS/Resources/Assets.xcassets/settingsImage.imageset/Contents.json
@@ -8,5 +8,8 @@
   "info" : {
     "version" : 1,
     "author" : "xcode"
+  },
+  "properties" : {
+    "preserves-vector-representation" : true
   }
 }
\ No newline at end of file
diff --git a/iOS/Resources/Assets.xcassets/starClosedImage.imageset/Contents.json b/iOS/Resources/Assets.xcassets/starClosedImage.imageset/Contents.json
index 38cbb2719..79268508c 100644
--- a/iOS/Resources/Assets.xcassets/starClosedImage.imageset/Contents.json
+++ b/iOS/Resources/Assets.xcassets/starClosedImage.imageset/Contents.json
@@ -8,5 +8,8 @@
   "info" : {
     "version" : 1,
     "author" : "xcode"
+  },
+  "properties" : {
+    "preserves-vector-representation" : true
   }
 }
\ No newline at end of file
diff --git a/iOS/Resources/Assets.xcassets/starOpenImage.imageset/Contents.json b/iOS/Resources/Assets.xcassets/starOpenImage.imageset/Contents.json
index 19c68b8c4..2de017efc 100644
--- a/iOS/Resources/Assets.xcassets/starOpenImage.imageset/Contents.json
+++ b/iOS/Resources/Assets.xcassets/starOpenImage.imageset/Contents.json
@@ -8,5 +8,8 @@
   "info" : {
     "version" : 1,
     "author" : "xcode"
+  },
+  "properties" : {
+    "preserves-vector-representation" : true
   }
 }
\ No newline at end of file
diff --git a/iOS/Resources/Assets.xcassets/threeCirclesImage.imageset/Contents.json b/iOS/Resources/Assets.xcassets/threeCirclesImage.imageset/Contents.json
deleted file mode 100644
index 909069751..000000000
--- a/iOS/Resources/Assets.xcassets/threeCirclesImage.imageset/Contents.json
+++ /dev/null
@@ -1,12 +0,0 @@
-{
-  "images" : [
-    {
-      "idiom" : "universal",
-      "filename" : "markall.pdf"
-    }
-  ],
-  "info" : {
-    "version" : 1,
-    "author" : "xcode"
-  }
-}
\ No newline at end of file
diff --git a/iOS/Resources/Assets.xcassets/threeCirclesImage.imageset/markall.pdf b/iOS/Resources/Assets.xcassets/threeCirclesImage.imageset/markall.pdf
deleted file mode 100644
index db80d99be..000000000
Binary files a/iOS/Resources/Assets.xcassets/threeCirclesImage.imageset/markall.pdf and /dev/null differ
diff --git a/iOS/Resources/Assets.xcassets/toolsImage.imageset/Contents.json b/iOS/Resources/Assets.xcassets/toolsImage.imageset/Contents.json
deleted file mode 100644
index 74003c0a8..000000000
--- a/iOS/Resources/Assets.xcassets/toolsImage.imageset/Contents.json
+++ /dev/null
@@ -1,12 +0,0 @@
-{
-  "images" : [
-    {
-      "idiom" : "universal",
-      "filename" : "tools.pdf"
-    }
-  ],
-  "info" : {
-    "version" : 1,
-    "author" : "xcode"
-  }
-}
\ No newline at end of file
diff --git a/iOS/Resources/Assets.xcassets/toolsImage.imageset/tools.pdf b/iOS/Resources/Assets.xcassets/toolsImage.imageset/tools.pdf
deleted file mode 100644
index 76d33106f..000000000
Binary files a/iOS/Resources/Assets.xcassets/toolsImage.imageset/tools.pdf and /dev/null differ