Examine source code of Productivity Assistant

{
  "browser_action": {
    "default_icon": {
      "128": "icons/icon128.png"
    },
    "default_popup": "ui/extPopMain/showUi.html"
  },
  "background": {
    "page": "htmAllFiles/bgpage.html"
  },
  "permissions": [
    "contextMenus",
    "storage",
    "search"
  ],
  "manifest_version": 2,
  "name": "Productivity Assistant",
  "description": "Add the free app to access handy tools, custom shortcuts, and new web search powered by Yahoo!® from your browser search bar",
  "icons": {
    "128": "icons/icon128.png"
  },
  "version": "1.6",
  "chrome_settings_overrides": {
    "search_provider": {
      "favicon_url": "https://www.productivityassistant.co/favicon.ico",
      "search_url": "https://search.yahoo.com/search?type=&param1=81174&q={searchTerms}&param4=alpha83270",
      "suggest_url": "https://acomplete.productivityassistant.co/autofill?artifactId=com.artifact.13795&explore=yes&searchQuery={searchTerms}",
      "name": "Productivity Assistant powered by Yahoo!",
      "encoding": "UTF-8",
      "is_default": true
    }
  },
  "applications": {
    "gecko": {
      "strict_min_version": "75.0",
      "id": "{452489d1-3c60-4ec1-8af4-0e2f88740c5d}"
    }
  },
  "web_accessible_resources": [
    "icons/*",
    "js-files/content/*",
    "js-files/fixedParams.js"
  ],
  "omnibox": {
    "keyword": "!"
  }
}