diff --git a/README.md b/README.md
index 3f071bad1..b2e60d65a 100755
--- a/README.md
+++ b/README.md
@@ -135,6 +135,7 @@ List of Definitions
 * [jQuery.Transit](http://ricostacruz.com/jquery.transit/) (by [MrBigDog2U](https://github.com/MrBigDog2U))
 * [jQuery.Validation](http://bassistance.de/jquery-plugins/jquery-plugin-validation/) (by [Boris Yankov](https://github.com/borisyankov))
 * [jQuery.Watermark](http://jquery-watermark.googlecode.com) (by [Anwar Javed](https://github.com/anwarjaved))
+* [jQuery.base64](https://github.com/yatt/jquery.base64) (by [Shinya Mochizuki](https://github.com/enrapt-mochizuki))
 * [jScrollPane](http://jscrollpane.kelvinluck.com) (by [Dániel Tar](https://github.com/qcz))
 * [JSDeferred](http://cho45.stfuawsc.com/jsdeferred/) (by [Daisuke Mino](https://github.com/minodisk))
 * [JSONEditorOnline](https://github.com/josdejong/jsoneditoronline) (by [Vincent Bortone](https://github.com/vbortone/))
diff --git a/jquery.base64/jquery.base64-tests.ts b/jquery.base64/jquery.base64-tests.ts
new file mode 100644
index 000000000..5f6b6eaa6
--- /dev/null
+++ b/jquery.base64/jquery.base64-tests.ts
@@ -0,0 +1,8 @@
+/// <reference path="../jquery/jquery.d.ts" />
+/// <reference path="jquery.base64.d.ts" />
+
+var encoded = $.base64.encode("");
+$.base64.decode(encoded);
+
+var encodedUTF8 = $.base64.encode("", true);
+$.base64.decode(encodedUTF8, true);
diff --git a/jquery.base64/jquery.base64.d.ts b/jquery.base64/jquery.base64.d.ts
new file mode 100644
index 000000000..9af24ed01
--- /dev/null
+++ b/jquery.base64/jquery.base64.d.ts
@@ -0,0 +1,15 @@
+// Type definitions for jQuery Plugin - base64 codec
+// Project: https://github.com/yatt/jquery.base64/
+// Definitions by: Shinya Mochizuki <https://github.com/enrapt-mochizuki/>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+/// <reference path="../jquery/jquery.d.ts" />
+
+interface JQueryBase64Static {
+  encode(data: string, isUTF8?: boolean): string;
+  decode(data: string, isUTF8?: boolean): string;
+}
+
+interface JQueryStatic {
+  base64: JQueryBase64Static;
+}