Examine source code of Mateus

{
  "name": "__MSG_appName__",
  "description": "__MSG_appDesc__",
  "version": "1.3.3",
  "default_locale": "en",
  "web_accessible_resources": [
    "css/feather.css",
    "css/fonts/Feather.woff",
    "lib/md5.js",
    "timer/scrambles/*",
    "timer/lang/*",
    "timer/ui/*",
    "timer/tools/*",
    "timer/voices/*",
    "timer/timer.js"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*.cstimer.net/*"
      ],
      "js": [
        "timer/init.js"
      ],
      "css": [
        "css/feather.css",
        "css/cstimer.css"
      ]
    }
  ],
  "icons": {
    "16": "images/icon16.png",
    "32": "images/icon32.png",
    "48": "images/icon48.png",
    "64": "images/icon64.png",
    "128": "images/icon128.png",
    "256": "images/icon256.png",
    "512": "images/icon512.png",
    "1024": "images/icon1024.png"
  },
  "manifest_version": 2
}