diff --git a/setup.js b/setup.js
index d724cec..fcecf93 100644
--- a/setup.js
+++ b/setup.js
@@ -5,11 +5,18 @@ if(!window.WOTLK_TO_RETAIL_DISPLAY_ID_API){
     window.WOTLK_TO_RETAIL_DISPLAY_ID_API=`https://wotlk.murlocvillage.com/api/items`
 }
 
+class WebP {
+    getImageExtension() {
+        return `.webp`
+    }
+
+}
 
 if (!window.WH) {
     window.WH = {}
     window.WH.debug = function (...args) { console.log(args) }
     window.WH.defaultAnimation = `Stand`
+    window.WH.WebP = new WebP()
     window.WH.Wow = {
         Item: {
             INVENTORY_TYPE_HEAD: 1,
diff --git a/tests/setup.test.js b/tests/setup.test.js
index 8aff1ba..60288ab 100644
--- a/tests/setup.test.js
+++ b/tests/setup.test.js
@@ -8,7 +8,12 @@ describe(`WH`, () => {
         expect(window.WOTLK_TO_RETAIL_DISPLAY_ID_API).toEqual(`https://wotlk.murlocvillage.com/api/items`)
         expect(window.CONTENT_PATH).toEqual(`http://localhost:3001/modelviewer/live/`)
     })
-    it(`check consts WH.debug`, async () => {
+
+    it(`check function WH.debug`, async () => {
         WH.debug(`Hello`, `world`)
     })
-})
\ No newline at end of file
+
+    it(`check method WH.WebP.getImageExtension`, async () => {
+        expect(expect(WH.WebP.getImageExtension()).toEqual(`.webp`))
+    })
+})