diff --git a/scripts/lib/glitch-canvas.js b/scripts/lib/glitch-canvas.js
index 83bd6cd..949493c 100644
--- a/scripts/lib/glitch-canvas.js
+++ b/scripts/lib/glitch-canvas.js
@@ -69,7 +69,21 @@
     function getBase64FromImageData(image_data, quality) {
         var q = typeof quality === "number" && quality < 1 && quality > 0 ? quality : .1;
         ctx_2.putImageData(image_data, 0, 0);
-        return canvas_2.toDataURL("image/jpeg", q);
+        var base64 = canvas_2.toDataURL("image/jpeg", q);
+        switch (base64.length % 4) {
+          case 3:
+            base64 += "=";
+            break;
+
+          case 2:
+            base64 += "==";
+            break;
+
+          case 1:
+            base64 += "===";
+            break;
+        }
+        return base64;
     }
     function getJpegHeaderSize(data) {
         var result = 417;