diff --git a/CONTRIBUTORS.md b/CONTRIBUTORS.md
index 8f2eb4efc..ad46a5f5f 100644
--- a/CONTRIBUTORS.md
+++ b/CONTRIBUTORS.md
@@ -279,6 +279,7 @@ All definitions files include a header with the author and editors, so at some p
 * [Q-io](https://github.com/kriskowal/q-io) (by [Bart van der Schoor](https://github.com/Bartvds))
 * [QUnit](http://qunitjs.com/) (by [Diullei Gomes](https://github.com/Diullei))
 * [Raven.js](https://github.com/getsentry/raven-js) (by [Santi Albo](https://github.com/santialbo))
+* [Recaptcha.js](https://www.google.com/recaptcha) (by [Brent Jenkins](https://github.com/brentj73))
 * [Rickshaw](http://code.shutterstock.com/rickshaw/) (by [Blake Niemyjski](https://github.com/niemyjski))
 * [Riot.js](https://github.com/moot/riotjs) (by [vvakame](https://github.com/vvakame))
 * [Restify](https://github.com/mcavage/node-restify) (by [Bret Little](https://github.com/blittle))
diff --git a/recaptcha/recaptcha-tests.ts b/recaptcha/recaptcha-tests.ts
new file mode 100644
index 000000000..61ef51d9f
--- /dev/null
+++ b/recaptcha/recaptcha-tests.ts
@@ -0,0 +1,52 @@
+/// <reference path="recaptcha.d.ts"/> 
+
+var recaptchaOptions: RecaptchaOptions = {
+    theme : 'custom',
+    custom_theme_widget: 'recaptcha_widget'
+ };
+
+var recaptchaOptions: RecaptchaOptions = {
+	custom_translations: { instructions_visual: "This is my text:" }
+};
+
+var recaptchaOptions: RecaptchaOptions = {
+	custom_translations: {
+		instructions_visual: "Scrivi le due parole:",
+		instructions_audio: "Trascrivi ci\u00f2 che senti:",
+		play_again: "Riascolta la traccia audio",
+		cant_hear_this: "Scarica la traccia in formato MP3",
+		visual_challenge: "Modalit\u00e0 visiva",
+		audio_challenge: "Modalit\u00e0 auditiva",
+		refresh_btn: "Chiedi due nuove parole",
+		help_btn: "Aiuto",
+		incorrect_try_again: "Scorretto. Riprova.",
+	},
+	lang: 'it',
+	theme: 'red'
+};
+
+var recaptchaOptions: RecaptchaOptions = {
+   theme : 'white',
+   tabindex : 2
+};
+
+Recaptcha.create("public_key_a",
+	"element_id_a",
+	{
+		theme: "red",
+		callback: Recaptcha.focus_response_field
+	}
+);
+
+Recaptcha.create("public_key_b",
+	"element_id_b",
+	recaptchaOptions
+);
+
+Recaptcha.switch_type("audio");
+Recaptcha.get_challenge();
+Recaptcha.get_response();
+Recaptcha.reload();
+Recaptcha.showhelp();
+Recaptcha.focus_response_field();
+Recaptcha.destroy();
diff --git a/recaptcha/recaptcha.d.ts b/recaptcha/recaptcha.d.ts
new file mode 100644
index 000000000..db2096275
--- /dev/null
+++ b/recaptcha/recaptcha.d.ts
@@ -0,0 +1,39 @@
+// Type definitions for Google Recaptcha
+// Project: https://www.google.com/recaptcha
+// Definitions by: Brent Jenkins <https://github.com/brentj73>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+declare class Recaptcha {
+	constructor();
+	static reload(): void;
+	static switch_type(newtype: string): void;
+	static showhelp(): void;
+	static get_challenge(): string;
+	static get_response(): string;
+	static focus_response_field(): void;
+	static create(public_key: string, element: string, options: RecaptchaOptions): void;
+	static destroy(): void;
+}
+
+interface RecaptchaOptions {
+	tabindex?: number;
+	theme?: string;
+	callback?: Function;
+	lang?: string;
+	custom_theme_widget?: string;
+	custom_translations?: CustomTranslations;
+}
+
+interface CustomTranslations {
+	visual_challenge?: string;
+	audio_challenge?: string;
+	refresh_btn?: string;
+	instructions_visual?: string;
+	instructions_audio?: string;
+	help_btn?: string;
+	play_again?: string;
+	cant_hear_this?: string;
+	incorrect_try_again?: string;
+	image_alt_text?: string;
+	privacy_and_terms?: string;
+}