Examine source code of Backify

{
  "manifest_version": 2,
  "name": "Backify",
  "description": "Backify Browser Extension",
  "version": "0.9.2.0",
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "Open the popup"
  },
  "icons": {
    "16": "icon16.png",
    "32": "icon32.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "background": {
    "scripts": [
      "background-script.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "https://*/*"
      ],
      "js": [
        "content-script.js"
      ],
      "css": [
        "content-styles.css"
      ]
    }
  ],
  "content_security_policy": "script-src 'self' 'sha256-FstRXlFn3sniVPBMSJsFSkrqsdUSfMocB/o0M0HiLzw='; object-src 'self'",
  "permissions": [
    "storage",
    "tabs",
    "webNavigation"
  ],
  "web_accessible_resources": [
    "lato-400-latin.woff2",
    "lato-400-latin-ext.woff2",
    "lato-700-latin.woff2",
    "lato-700-latin-ext.woff2",
    "logo-light.svg",
    "logo-dark.svg",
    "cashback-activate.png",
    "cashback-activated.png",
    "close-btn.svg",
    "icon-light.svg",
    "disable-btn.svg",
    "info-btn.svg",
    "info-icon.svg",
    "levels-icon.svg"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{9cee6b31-8c1c-4013-8b58-1c81adbe0f27}"
    }
  }
}