diff --git a/index.html b/index.html
index db26e00..6a8efb6 100644
--- a/index.html
+++ b/index.html
@@ -126,21 +126,20 @@
 // lex.opacity = 1
 
 </script>
-<script src="js/vendor/colorcode.js"></script>
-<script src="js/vendor/text-encoder-lite.js"></script>
-<script src="js/vendor/dataUriToBlob.js"></script>
-<script src="js/vendor/FileSaver.js"></script>
-<script src="js/vendor/oktween.js"></script>
+<script src="js/ext/colorcode.js"></script>
+<script src="js/ext/dataUriToBlob.js"></script>
+<script src="js/ext/FileSaver.js"></script>
+<script src="js/ext/oktween.js"></script>
 
 <script src="js/util.js"></script>
-<script src="js/png.js"></script>
-<script src="js/unicode.js"></script>
-<script src="js/color.js"></script>
+<script src="js/ext/png.js"></script>
+<script src="js/ext/unicode.js"></script>
+<script src="js/ext/color.js"></script>
 <script src="js/dither.js"></script>
 <script src="js/undo.js"></script>
 <script src="js/clipboard.js"></script>
-<script src="js/upload.js"></script>
-<script src="js/user.js"></script>
+<script src="js/ext/upload.js"></script>
+<script src="js/ext/user.js"></script>
 
 <script src="js/lex.js"></script>
 <script src="js/matrix.js"></script>
diff --git a/js/vendor/FileSaver.js b/js/ext/FileSaver.js
similarity index 100%
rename from js/vendor/FileSaver.js
rename to js/ext/FileSaver.js
diff --git a/js/color.js b/js/ext/color.js
similarity index 100%
rename from js/color.js
rename to js/ext/color.js
diff --git a/js/vendor/colorcode.js b/js/ext/colorcode.js
similarity index 100%
rename from js/vendor/colorcode.js
rename to js/ext/colorcode.js
diff --git a/js/vendor/dataUriToBlob.js b/js/ext/dataUriToBlob.js
similarity index 100%
rename from js/vendor/dataUriToBlob.js
rename to js/ext/dataUriToBlob.js
diff --git a/js/vendor/oktween.js b/js/ext/oktween.js
similarity index 100%
rename from js/vendor/oktween.js
rename to js/ext/oktween.js
diff --git a/js/png.js b/js/ext/png.js
similarity index 100%
rename from js/png.js
rename to js/ext/png.js
diff --git a/js/unicode.js b/js/ext/unicode.js
similarity index 100%
rename from js/unicode.js
rename to js/ext/unicode.js
diff --git a/js/upload.js b/js/ext/upload.js
similarity index 100%
rename from js/upload.js
rename to js/ext/upload.js
diff --git a/js/user.js b/js/ext/user.js
similarity index 100%
rename from js/user.js
rename to js/ext/user.js
diff --git a/js/vendor/text-encoder-lite.js b/js/vendor/text-encoder-lite.js
deleted file mode 100644
index 957fd9b..0000000
--- a/js/vendor/text-encoder-lite.js
+++ /dev/null
@@ -1,141 +0,0 @@
-// taken from https://github.com/coolaj86/TextEncoderLite/blob/master/index.js
-// added polyfill at bottom
-
-function TextEncoderLite() {
-}
-function TextDecoderLite() {
-}
-
-(function () {
-'use strict';
-
-// Taken from https://github.com/feross/buffer/blob/master/index.js
-// Thanks Feross et al! :-)
-
-function utf8ToBytes (string, units) {
-  units = units || Infinity
-  var codePoint
-  var length = string.length
-  var leadSurrogate = null
-  var bytes = []
-  var i = 0
-
-  for (; i < length; i++) {
-    codePoint = string.charCodeAt(i)
-
-    // is surrogate component
-    if (codePoint > 0xD7FF && codePoint < 0xE000) {
-      // last char was a lead
-      if (leadSurrogate) {
-        // 2 leads in a row
-        if (codePoint < 0xDC00) {
-          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
-          leadSurrogate = codePoint
-          continue
-        } else {
-          // valid surrogate pair
-          codePoint = leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00 | 0x10000
-          leadSurrogate = null
-        }
-      } else {
-        // no lead yet
-
-        if (codePoint > 0xDBFF) {
-          // unexpected trail
-          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
-          continue
-        } else if (i + 1 === length) {
-          // unpaired lead
-          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
-          continue
-        } else {
-          // valid lead
-          leadSurrogate = codePoint
-          continue
-        }
-      }
-    } else if (leadSurrogate) {
-      // valid bmp char, but last char was a lead
-      if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
-      leadSurrogate = null
-    }
-
-    // encode utf8
-    if (codePoint < 0x80) {
-      if ((units -= 1) < 0) break
-      bytes.push(codePoint)
-    } else if (codePoint < 0x800) {
-      if ((units -= 2) < 0) break
-      bytes.push(
-        codePoint >> 0x6 | 0xC0,
-        codePoint & 0x3F | 0x80
-      )
-    } else if (codePoint < 0x10000) {
-      if ((units -= 3) < 0) break
-      bytes.push(
-        codePoint >> 0xC | 0xE0,
-        codePoint >> 0x6 & 0x3F | 0x80,
-        codePoint & 0x3F | 0x80
-      )
-    } else if (codePoint < 0x200000) {
-      if ((units -= 4) < 0) break
-      bytes.push(
-        codePoint >> 0x12 | 0xF0,
-        codePoint >> 0xC & 0x3F | 0x80,
-        codePoint >> 0x6 & 0x3F | 0x80,
-        codePoint & 0x3F | 0x80
-      )
-    } else {
-      throw new Error('Invalid code point')
-    }
-  }
-
-  return bytes
-}
-
-function utf8Slice (buf, start, end) {
-  var res = ''
-  var tmp = ''
-  end = Math.min(buf.length, end || Infinity)
-  start = start || 0;
-
-  for (var i = start; i < end; i++) {
-    if (buf[i] <= 0x7F) {
-      res += decodeUtf8Char(tmp) + String.fromCharCode(buf[i])
-      tmp = ''
-    } else {
-      tmp += '%' + buf[i].toString(16)
-    }
-  }
-
-  return res + decodeUtf8Char(tmp)
-}
-
-function decodeUtf8Char (str) {
-  try {
-    return decodeURIComponent(str)
-  } catch (err) {
-    return String.fromCharCode(0xFFFD) // UTF 8 invalid char
-  }
-}
-
-TextEncoderLite.prototype.encode = function (str) {
-  var result;
-
-  if ('undefined' === typeof Uint8Array) {
-    result = utf8ToBytes(str);
-  } else {
-    result = new Uint8Array(utf8ToBytes(str));
-  }
-
-  return result;
-};
-
-TextDecoderLite.prototype.decode = function (bytes) {
-  return utf8Slice(bytes, 0, bytes.length);
-}
-
-}());
-
-if (typeof TextEncoder === 'undefined') TextEncoder = TextEncoderLite
-if (typeof TextDecoder === 'undefined') TextDecoder = TextDecoderLite