diff --git a/README.md b/README.md
index 2625a2f..03c613d 100644
--- a/README.md
+++ b/README.md
@@ -121,3 +121,7 @@
 - 兼容 img 的 `srcset` 属性
 - 去掉重复的资源
 - 修改按钮的动态透明度，不遮挡内容
+
+## 黑白
+
+黑白化网站。
\ No newline at end of file
diff --git a/scripts/black-and-white.js b/scripts/black-and-white.js
new file mode 100644
index 0000000..687d0f0
--- /dev/null
+++ b/scripts/black-and-white.js
@@ -0,0 +1,19 @@
+// ==UserScript==
+// @name         黑白
+// @namespace    https://github.com/yujinpan/tampermonkey-extension
+// @version      1.0
+// @license      MIT
+// @description  网站黑白化。
+// @author       yujinpan
+// @include      http*://**
+// ==/UserScript==
+
+(function () {
+  var html = document.querySelector('html');
+  var style = html.getAttribute('style') || '';
+  if (style && style.slice(-1) !== ';') style += ';';
+  html.setAttribute('style',
+    style +
+    'filter: progid:DXImageTransform.Microsoft.BasicImage(grayscale=1);' +
+    'filter: grayscale(100%);');
+})();
\ No newline at end of file