diff --git a/README.md b/README.md
index e614f4d7..2eee4f45 100644
--- a/README.md
+++ b/README.md
@@ -38,6 +38,10 @@ Piskel supports the following browsers :
 
 We don't plan/want/could be forced into supporting older IEs. For Opera and Safari, we've never tested them but the gap shouldn't be huge.
 
+## Offline version (Windows and MacOS)
+
+Offline builds are available. More details in the [dedicated wiki page](https://github.com/juliandescottes/piskel/wiki/Desktop-applications).
+
 ## Built with
 
 The Piskel editor is purely built in **JavaScript, HTML and CSS**. It uses Canvas extensively for displaying all them pretty sprites.
diff --git a/src/js/controller/settings/PngExportController.js b/src/js/controller/settings/PngExportController.js
index c2ab141c..c28ddaf1 100644
--- a/src/js/controller/settings/PngExportController.js
+++ b/src/js/controller/settings/PngExportController.js
@@ -30,7 +30,8 @@
     for (var i = 0; i < this.piskelController.getFrameCount(); i++) {
       var frame = this.piskelController.getFrameAt(i);
       var canvas = this.getFrameAsCanvas_(frame);
-      var filename = "sprite_" + (i+1) + ".png";
+      var basename = document.getElementById("zip-file-name").value || "sprite_";
+      var filename =  basename + (i+1) + ".png";
       zip.file(filename, pskl.CanvasUtils.getBase64FromCanvas(canvas) + '\n', {base64: true});
     }
 
@@ -85,4 +86,4 @@
     }
     return url;
   };
-})();
\ No newline at end of file
+})();
diff --git a/src/templates/settings/export.html b/src/templates/settings/export.html
index e674e70e..ca344873 100644
--- a/src/templates/settings/export.html
+++ b/src/templates/settings/export.html
@@ -7,11 +7,16 @@
     <span class="settings-description">PNG with all frames side by side.</span>
     <button type="button" class="button button-primary png-download-button">Download PNG</button>
   </div>
+  <div class="settings-title">
+    Export as ZIP
+  </div>
   <div class="settings-item">
-    <span class="settings-description">ZIP with one PNG file per frame.</span>
-    <div>
-      <button type="button" class="button button-primary zip-generate-button"/>Download ZIP</button>
+    <span class="settings-description">ZIP with one PNG file per frame. Name will use the prefix above and append the frame index, ex: sprite_1.png</span>
+    <div class="settings-item">
+      <label for="zip-file-name">File prefix:</label>
+      <input id="zip-file-name" type="text" class="textfield" placeholder="sprite_">
     </div>
+    <button type="button" class="button button-primary zip-generate-button"/>Download ZIP</button>
   </div>
   <div class="settings-title">
     Export to Animated GIF
@@ -37,4 +42,4 @@
     <span class="gif-export-progress-status"></span>
     <div class="gif-export-progress-bar"></div>
   </div>
-</div>
\ No newline at end of file
+</div>