Examine source code of SearXNG 4all

{
  "manifest_version": 2,
  "name": "__MSG_extensionName__",
  "version": "1.1",
  "author": "Collaborative",
  "default_locale": "fr",
  "description": "__MSG_extensionDescription__",
  "icons": {
    "48": "searxng48.webp"
  },
  "browser_action": {
    "default_title": "SearXNG 4all",
    "default_popup": "popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "searxng4all@gtnc",
      "strict_min_version": "64.0"
    }
  },
  "permissions": [
    "storage",
    "webRequest",
    "webRequestBlocking",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "chrome_settings_overrides": {
    "search_provider": {
      "name": "SearXNG 4All",
      "keyword": "@searxng",
      "search_url": "https://searxng-redirect.com/search?q={searchTerms}",
      "favicon_url": "searxng128.webp",
      "is_default": true
    }
  }
}