Examine source code of SERP Analyzer

{
  "name": "__MSG_name__",
  "short_name": "__MSG_shortname__",
  "description": "__MSG_longdesc__",
  "default_locale": "en",
  "manifest_version": 3,
  "background": {
    "scripts": [
      "serviceWorker.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "exclude_matches": [
        "*://*.facebook.com/*",
        "*://*.facebook.net/*",
        "*://*.fbcdn.net/*",
        "*://*.akamaihd.net/*",
        "*://*.virtualearth.net/*",
        "*://*.youtube.com/*",
        "*://chrome.google.com/*"
      ],
      "js": [
        "contentScript.js"
      ],
      "css": [
        "styles/contentScript.css"
      ]
    }
  ],
  "host_permissions": [
    "http://*/*",
    "https://*/*"
  ],
  "permissions": [
    "scripting",
    "activeTab",
    "tabs",
    "webRequest",
    "storage"
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'"
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "action": {
    "default_title": "SERP Analyzer",
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon_16.png",
      "19": "icons/icon_19.png",
      "32": "icons/icon_32.png",
      "38": "icons/icon_38.png",
      "64": "icons/icon_64.png",
      "128": "icons/icon_128.png",
      "256": "icons/icon_256.png",
      "512": "icons/icon_512.png",
      "1024": "icons/icon_1024.png"
    }
  },
  "icons": {
    "16": "icons/icon_16.png",
    "19": "icons/icon_19.png",
    "32": "icons/icon_32.png",
    "38": "icons/icon_38.png",
    "64": "icons/icon_64.png",
    "128": "icons/icon_128.png",
    "256": "icons/icon_256.png",
    "512": "icons/icon_512.png",
    "1024": "icons/icon_1024.png"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "/flags/*",
        "/icons/*"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "version": "3.2.5",
  "author": "Ray",
  "homepage_url": "https://leadscloud.github.io/serp-analyzer/",
  "browser_specific_settings": {
    "gecko": {
      "id": "{dc02e2c8-98cb-412d-b214-f900a085b7af}"
    }
  }
}