diff --git a/manifest_firefox.json b/manifest_firefox.json
new file mode 100644
index 0000000..f1f0e8c
--- /dev/null
+++ b/manifest_firefox.json
@@ -0,0 +1,52 @@
+{
+  "manifest_version": 2,
+  "name": "Impuestito: precio final juegos con impuestos",
+  "description": "Conocé el precio final de los juegos de Playstation, Xbox, Nintendo y Epic, GOG y más! (Precio final con impuestos Argentina)",
+  "version": "1.10",
+  "background": {
+    "scripts": ["background.js"]
+  },
+  "content_scripts": [
+    {
+      "matches": [
+        "*://*.playstation.com/es-ar/*",
+        "*://*.playstation.com/en-us/*",
+        "*://*.xbox.com/es-AR/*",
+        "*://*.xbox.com/es-ar/*",
+        "*://*.nintendo.com/es-ar/*",
+        "*://*.nintendo.com/search/es-ar/*",
+        "*://*.epicgames.com/*",
+        "*://*.gog.com/*",
+        "*://*.ubisoft.com/*",
+        "*://*.ea.com/*",
+        "*://*.xbdeals.net/ar-store*",
+        "*://*.psdeals.net/ar-store*",
+        "*://*.dekudeals.com/*",
+        "*://*.steampowered.com/*"
+      ],
+      "css": ["css/styles.css"],
+      "js": [
+        "js/index.js",
+        "js/helpers.js",
+        "js/gaming/playstation.js",
+        "js/gaming/xbox.js",
+        "js/gaming/nintendo.js",
+        "js/gaming/epic.js",
+        "js/gaming/gog.js",
+        "js/gaming/ubisoft.js",
+        "js/gaming/ea.js",
+        "js/gaming/xbdeals.js",
+        "js/gaming/psdeals.js",
+        "js/gaming/dekudeals.js",
+        "js/gaming/steam.js"
+      ],
+      "run_at": "document_idle"
+    }
+  ],
+  "icons": {
+    "16": "/assets/icon16.png",
+    "32": "/assets/icon32.png",
+    "48": "/assets/icon48.png",
+    "128": "/assets/icon128.png"
+  }
+}
\ No newline at end of file