diff --git a/Required-Browser-Features.md b/Required-Browser-Features.md
index a6dcead..daa41a9 100644
--- a/Required-Browser-Features.md
+++ b/Required-Browser-Features.md
@@ -657,31 +657,6 @@ if the browser cannot tell if fonts are loaded and can be used.
   </tbody>
 </table>
 
-## <a id="TextDecoder"></a>TextDecoder is supported
-
-Some East Asian PDFs will be completely garbled, if the browser does not support the `TextDecoder`. See http://encoding.spec.whatwg.org/
-
-<table>
-  <thead>
-    <tr>
-      <th>Chrome</th>
-      <th>Firefox (Gecko)</th>
-      <th>Internet Explorer</th>
-      <th>Opera</th>
-      <th>Safari</th>
-    </tr>
-  </thead>
-  <tbody>
-    <tr>
-      <td>No (v.24)</td>
-      <td>Yes (v.18)</td>
-      <td>No (v.10)</td>
-      <td>?</td>
-      <td>No (v.6)</td>
-    </tr>
-  </tbody>
-</table>
-
 ## <a id="Worker"></a>Worker is supported/enabled
 
 The PDF.js will execute all code (even long running) on the main thread,
@@ -785,28 +760,3 @@ if the browser cannot request network binary data from web workers.
     </tr>
   </tbody>
 </table>
-
-## <a id="Worker-TextDecoder"></a>TextDecoder is supported in web workers
-
-Texts will not be copied properly on some East Asian PDFs. If the browser does not support the `TextDecoder` in web workers, the `FileReaderSync` will be used instead.
-
-<table>
-  <thead>
-    <tr>
-      <th>Chrome</th>
-      <th>Firefox (Gecko)</th>
-      <th>Internet Explorer</th>
-      <th>Opera</th>
-      <th>Safari</th>
-    </tr>
-  </thead>
-  <tbody>
-    <tr>
-      <td>Emulated (v.24)</td>
-      <td>Yes (v.20)</td>
-      <td>Emulated (v.10)</td>
-      <td>?</td>
-      <td>No (v.6)</td>
-    </tr>
-  </tbody>
-</table>