Examine source code of BeFrugal: Automatic Coupons, Highest CashBack

{
  "manifest_version": 2,
  "name": "BeFrugal: Automatic Coupons, Highest CashBack",
  "description": "Get the highest Cash Back and automatically apply the best coupons at over 5,000 stores!",
  "version": "2025.6.247.0",
  "background": {
    "scripts": [
      "js/shoptoolbar.js"
    ]
  },
  "permissions": [
    "tabs",
    "webRequest",
    "webRequestBlocking",
    "unlimitedStorage",
    "*://*/*",
    "storage",
    "management"
  ],
  "icons": {
    "16": "icon16ff.png",
    "128": "icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "js/jquery.min.js",
        "js/contentscript.js",
        "js/purify.min.js"
      ]
    }
  ],
  "web_accessible_resources": [
    "toast_icon.png",
    "up-arrow.png",
    "chrome-arrow-small.png",
    "search_icon.png",
    "banner_next.png",
    "banner_prev.png",
    "icon48.png",
    "icon128.png",
    "icon_cb.png",
    "grey_icon48.png",
    "scrollbar.js",
    "scrollbar.css",
    "fonts/*",
    "AutoApplyResources/*",
    "animations/badgeIcons/*",
    "animations/checkmark/*",
    "instructionImages/*",
    "notifybar/*",
    "inject/*",
    "ratepopup/*",
    "js/notifybar.js",
    "settingsPage.html",
    "settings/settings.html",
    "settings/searchSites.html",
    "images/*"
  ],
  "browser_action": {
    "browser_style": true,
    "default_icon": {
      "16": "icon16_inactive.png",
      "32": "icon32_inactive.png"
    },
    "default_popup": "popup.html"
  },
  "applications": {
    "gecko": {
      "id": "shopcbbuttonFF@befrugal.com"
    }
  }
}