diff --git a/public/javascripts/attachments.js b/public/javascripts/attachments.js
index 157513e00..cdc27768c 100644
--- a/public/javascripts/attachments.js
+++ b/public/javascripts/attachments.js
@@ -275,6 +275,7 @@ function copyImageFromClipboard(e) {
   if (!clipboardData) { return; }
   if (clipboardData.types.some(function(t){ return /^text\/plain$/.test(t); })) { return; }
 
+  var pixelDensity = Math.round(window.devicePixelRatio);
   var files = clipboardData.files
   for (var i = 0 ; i < files.length ; i++) {
     var file = files[i];
@@ -286,8 +287,13 @@ function copyImageFromClipboard(e) {
         + ('0'+date.getDate()).slice(-2)
         + ('0'+date.getHours()).slice(-2)
         + ('0'+date.getMinutes()).slice(-2)
-        + '-' + randomKey(5).toLocaleLowerCase()
-        + '.' + file.name.split('.').pop();
+        + '-' + randomKey(5).toLocaleLowerCase();
+      // pixel density descriptor (e.g. @2x)
+      if (pixelDensity >= 2) {
+        filename += '@' + pixelDensity + 'x';
+      }
+      // file extension
+      filename += '.' + file.name.split('.').pop();
 
       // get input file in the closest form
       var inputEl = $(this).closest("form").find('input:file.filedrop');