Examine source code of Privacy.com for Firefox

{
  "name": "Pay by Privacy.com",
  "short_name": "Pay by Privacy.com",
  "description": "Protect yourself from fraud and identity theft with disposable credit card numbers for use online",
  "version": "1.6.3",
  "author": "Pay With Privacy, Inc.",
  "homepage_url": "https://privacy.com",
  "permissions": [
    "tabs",
    "*://*/*",
    "storage"
  ],
  "applications": {
    "gecko": {
      "id": "privacy@privacy.com",
      "strict_min_version": "42.0"
    }
  },
  "icons": {
    "16": "assets/icon16.png",
    "48": "assets/icon48.png",
    "128": "assets/icon128.png"
  },
  "browser_action": {
    "default_title": "Privacy",
    "default_popup": "popup.html",
    "default_icon": {
      "16": "assets/icon16.png",
      "32": "assets/icon32.png"
    }
  },
  "background": {
    "persistent": true,
    "scripts": [
      "js/jquery.min.js",
      "js/Store.js",
      "js/api.js",
      "js/Message.js",
      "js/Entity.js",
      "js/background.js"
    ]
  },
  "content_scripts": [
    {
      "all_frames": true,
      "matches": [
        "*://*/*"
      ],
      "run_at": "document_end",
      "js": [
        "js/cookies.min.js",
        "js/jquery.min.js",
        "js/crypto.min.js",
        "js/PaymentCard.js",
        "js/Checkout.js",
        "js/Message.js",
        "js/Entity.js",
        "js/content.js"
      ]
    }
  ],
  "web_accessible_resources": [
    "interstitial.html",
    "assets/icon16.png"
  ],
  "content_security_policy": "script-src 'self'; object-src 'self'",
  "manifest_version": 2
}