diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index de6be79..544f411 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -1,2 +1,12 @@
 module ApplicationHelper
+  def number_to_won(number)
+    number_to_currency number, unit: '원', precision: 0, format: '%n%u'
+  end
+
+  def facebook_image_tag_by_uid(uid, *args, &block)
+    options = args.extract_options!
+    url_options = options.slice(:width, :height)
+    image_url = "//graph.facebook.com/#{uid}/picture?#{url_options.to_query}"
+    image_tag image_url, options, &block
+  end
 end
diff --git a/app/views/contributions/new.html.erb b/app/views/contributions/new.html.erb
index e26e6ee..a1b6787 100644
--- a/app/views/contributions/new.html.erb
+++ b/app/views/contributions/new.html.erb
@@ -1,5 +1,5 @@
 <div class="cont-container container">
-<h3 class="page-header">선물 참여하기<small> 최대 참여 가능 금액은 <%= number_to_currency @fund.remain_amount, unit: '원', precision: 0, format: '%n%u' %>입니다.</small></h3>
+<h3 class="page-header">선물 참여하기<small> 최대 참여 가능 금액은 <%= number_to_won @fund.remain_amount %>입니다.</small></h3>
   <div class="row">
     <div class="cont-form-container col-md-8">
       <%= form_for @contribution_form, url: fund_contributions_path do |f| %>
diff --git a/app/views/friends/index.html.erb b/app/views/friends/index.html.erb
index d70c8f1..f9c9937 100644
--- a/app/views/friends/index.html.erb
+++ b/app/views/friends/index.html.erb
@@ -8,7 +8,7 @@
       <div class="col-sm-4 col-md-2">
         <%= link_to new_friend_path(uid: @user.uid, name: @user.name) do %>
         <div class="thumbnail">
-          <img src="http://graph.facebook.com/<%= @user.uid %>/picture?height=192&width=192">
+          <%= facebook_image_tag_by_uid(@user.uid, width: 192, height: 192) %>
           <div class="caption">
             <p>나에게 선물하기</p>
           </div>
@@ -20,7 +20,7 @@
       <div class="col-sm-4 col-md-2">
         <%= link_to new_friend_path(uid: f['id'], name: f['name']) do %>
         <div class="thumbnail">
-          <img src="http://graph.facebook.com/<%= f["id"] %>/picture?height=192&width=192">
+          <%= facebook_image_tag_by_uid(f.id, width: 192, height: 192) %>
           <div class="caption">
             <p><%= f["name"] %></p>
           </div>
diff --git a/app/views/funds/_new.html.erb b/app/views/funds/_new.html.erb
index d1a3b90..cbf6322 100644
--- a/app/views/funds/_new.html.erb
+++ b/app/views/funds/_new.html.erb
@@ -8,7 +8,7 @@
     <div class="col-md-4">
       <div class="friend-information">
         <h4 class="gift-name"><%= @gift.name %></h4>
-        <span class="gift-price pull-left"><%= number_to_currency @gift.price, unit: '₩', precision: 0 %></span>
+        <span class="gift-price pull-left"><%= number_to_won @gift.price %></span>
         <small class="pull-right">To <%= @friend.name %></small>
         <div class="clearfix"></div>
       </div>
diff --git a/app/views/funds/show.html.erb b/app/views/funds/show.html.erb
index 11c8a11..59893d9 100644
--- a/app/views/funds/show.html.erb
+++ b/app/views/funds/show.html.erb
@@ -39,7 +39,7 @@
       </div>
       <div class="friend-information">
         <h4 class="gift-name"><%= @fund.gift.name %></h4>
-        <span class="gift-price pull-left"><%= number_to_currency @fund.gift.price, unit: '₩', precision: 0 %></span>
+        <span class="gift-price pull-left"><%= number_to_won @fund.gift.price %></span>
         <div class="clearfix"></div>
       </div>
       <div class="friend-information">
@@ -49,7 +49,7 @@
       </div>
       <div class="friend-information">
         <h3 class="page-header">모금 현황</h3>
-        <h2 class="text-center contribute-amount"><%= number_to_currency @fund.total_amount, unit: '원', precision: 0, format: '%n%u' %></h2>
+        <h2 class="text-center contribute-amount"><%= number_to_won @fund.total_amount %></h2>
 
         <div class="progress">
           <div class="progress-bar progress-bar-success" role="progressbar" aria-valuenow="<%= @fund.percentage %>" aria-valuemin="0" aria-valuemax="100" style="width: <%= @fund.percentage %>%;">
@@ -66,7 +66,7 @@
             <div>
               <% contributions.each do |contribution| %>
                 <div class="contributor-image pull-left">
-                  <%= image_tag "http://graph.facebook.com/#{ contribution.user.uid}/picture?height=1000&width=1000" %>
+                  <%= facebook_image_tag_by_uid(contribution.user.uid, width: 1000, height: 1000)
                 </div>
               <% end %>
             </div>
diff --git a/app/views/gifts/_gift.html.erb b/app/views/gifts/_gift.html.erb
index 049dcd9..45e974e 100644
--- a/app/views/gifts/_gift.html.erb
+++ b/app/views/gifts/_gift.html.erb
@@ -6,7 +6,7 @@
         <h4><%= gift.name %></h4>
       </div>
       <p class="gift-price">
-        <%= number_to_currency gift.price, unit: '₩ ', precision: 0 %>
+        <%= number_to_won gift.price %>
       </p>
     </div>
     <!-- <div class="gift-feeling">
diff --git a/app/views/gifts/new.html.erb b/app/views/gifts/new.html.erb
index 6ca52b1..6d6b130 100644
--- a/app/views/gifts/new.html.erb
+++ b/app/views/gifts/new.html.erb
@@ -49,7 +49,7 @@
         });
       });
     } );
-    
+
   </script>
 </body>