Examine source code of PDF Search Helper

{
  "manifest_version": 3,
  "name": "PDF Search Helper",
  "version": "1.0.1",
  "description": "Enhanced search experience with PDF file search capabilities.",
  "permissions": [
    "storage",
    "declarativeNetRequest"
  ],
  "host_permissions": [
    "https://*.pdfsearchhelper.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.pdfsearchhelper.com/*"
      ],
      "js": [
        "js/dpl-extensions.js",
        "js/utils.js",
        "js/pdfsearchhelper.js"
      ]
    }
  ],
  "action": {
    "default_popup": "popup.html",
    "default_title": "PDF Search Helper"
  },
  "chrome_settings_overrides": {
    "search_provider": {
      "name": "PDF Search Helper",
      "keyword": "@pdfsearch",
      "search_url": "https://api.pdfsearchhelper.com/api/search?q={searchTerms}",
      "favicon_url": "icons/favicon.ico",
      "suggest_url": "https://api.pdfsearchhelper.com/api/suggest?q={searchTerms}",
      "encoding": "UTF-8",
      "is_default": true
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "pdfsearchhelper@system1.com",
      "strict_min_version": "121.0"
    }
  }
}