diff --git a/blazy/blazy-tests.ts b/blazy/blazy-tests.ts
new file mode 100644
index 0000000000..700860d87e
--- /dev/null
+++ b/blazy/blazy-tests.ts
@@ -0,0 +1,44 @@
+/// <reference path="blazy.d.ts" />
+
+/* Constructor test */
+var tester: IBlazyInstance = new Blazy({
+  breakpoints: [
+    {
+      width: 420,
+      src: 'data-src-small'
+    },
+    {
+      width: 768,
+      src: 'data-src-medium'
+    }
+  ],
+  container: '#scrolling-container',
+  error: function(ele: HTMLElement, msg: string) {
+    if (msg === 'missing') {
+      console.log('missing');
+    }
+    else if (msg === 'invalid') {
+      console.log('invalid');
+    }
+  },
+  errorClass: 'b-error',
+  loadInvisible: false,
+  offset: 100,
+  saveViewportOffsetDelay: 50,
+  selector: '.b-lazy',
+  separator: '|',
+  src: 'data-src',
+  success: function(ele: HTMLElement) {
+    console.log('success');
+  },
+  successClass: 'b-loaded',
+  validateDelay: 25
+});
+
+/* Functions tests */
+tester.revalidate();
+
+var elements = <NodeList>document.getElementsByTagName('img');
+tester.load(elements, true);
+
+tester.destroy();
diff --git a/blazy/blazy.d.ts b/blazy/blazy.d.ts
index 8b13789179..49434d3b49 100644
--- a/blazy/blazy.d.ts
+++ b/blazy/blazy.d.ts
@@ -1 +1,72 @@
+// Type definitions for bLazy v1.5.2
+// Project: https://github.com/dinbror/blazy
+// Definitions by: Julien Paroche <https://github.com/julienpa>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/blazy
+// Definitions based on: http://dinbror.dk/blog/blazy
 
+declare var Blazy: Blazy;
+
+interface Blazy {
+
+  new (options: IBlazyOptions): IBlazyInstance;
+
+}
+
+interface IBlazyOptions {
+
+  breakpoints: IBreakpoint[];
+
+  container: string;
+
+  error: (ele: Element|HTMLElement, msg: string) => void;
+
+  errorClass: string;
+
+  loadInvisible: boolean;
+
+  offset: number;
+
+  saveViewportOffsetDelay: number;
+
+  selector: string;
+
+  separator: string;
+
+  src: string;
+
+  success: (ele: Element|HTMLElement|NodeList) => void;
+
+  successClass: string;
+
+  validateDelay: number;
+
+}
+
+interface IBlazyInstance {
+
+  /**
+   * Revalidates document for visible images. Useful if you add images with scripting or ajax.
+   */
+  revalidate(): void;
+
+  /**
+   * Forces the given element(s) to load if not collapsed. If you also want to load a collapsed/hidden elements you can add true as the second parameter.
+   * You can pass a single element or a list of elements. Tested with getElementById, getElementsByClassName, querySelectorAll, querySelector and jQuery selector.
+   */
+  load(elements: Element|Element[]|HTMLElement|HTMLElement[]|NodeList, force: boolean): void;
+
+  /**
+   * Unbind events and resets image array.
+   */
+  destroy(): void;
+
+}
+
+interface IBreakpoint {
+  width: number;
+  src: string;
+}
+
+declare module 'Blazy' {
+  export = Blazy;
+}