diff --git a/image-size/image-size-tests.ts b/image-size/image-size-tests.ts
new file mode 100644
index 000000000..0f9b29618
--- /dev/null
+++ b/image-size/image-size-tests.ts
@@ -0,0 +1,28 @@
+/// <reference path="image-size.d.ts" />
+
+import * as url from "url";
+import * as http from "http";
+import * as sizeOf from "image-size";
+
+// Synchronous
+const dimensions = sizeOf("images/funny-cats.png");
+console.log(dimensions.width, dimensions.height);
+
+// Asynchronous
+sizeOf("images/funny-cats.png", (err, dimensions) => {
+  console.log(dimensions.width, dimensions.height);
+});
+
+// From URL
+const imgUrl = "http://my-amazing-website.com/image.jpeg";
+const options = url.parse(imgUrl);
+
+http.get(options, (response) => {
+  const chunks: Buffer[] = [];
+  response.on("data", (chunk: Buffer) => {
+    chunks.push(chunk);
+  }).on("end", () => {
+    const buffer = Buffer.concat(chunks);
+    console.log(sizeOf(buffer));
+  });
+});
diff --git a/image-size/image-size.d.ts b/image-size/image-size.d.ts
new file mode 100644
index 000000000..6b553630c
--- /dev/null
+++ b/image-size/image-size.d.ts
@@ -0,0 +1,24 @@
+// Type definitions for image-size
+// Project: https://github.com/image-size/image-size
+// Definitions by: Elisée MAURER <https://github.com/elisee/>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+/// <reference path="../node/node.d.ts" />
+
+declare module "image-size" {
+
+  interface ImageInfo {
+    width: number;
+    height: number;
+    type: string;
+  }
+
+  function sizeOf(path: string): ImageInfo;
+  function sizeOf(path: string, callback: (err: Error, dimensions: ImageInfo) => void): void;
+
+  function sizeOf(buffer: Buffer): ImageInfo;
+
+  namespace sizeOf {}
+
+  export = sizeOf;
+}