Examine source code of Math Solver Fun

{
  "manifest_version": 2,
  "name": "Math Solver Basic",
  "version": "1.0",
  "description": "Math Solver is a fun and useful utility that helps you Solve and explain mathematical problems.",
  "permissions": [],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "128": "images/math-logo.png"
    }
  },
  "icons": {
    "128": "images/math-logo.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{5524e67b-0a7c-45bd-815f-9dcc8f9b05f7}"
    }
  }
}