Examine source code of Simple = Select + Search

{
  "description": "__MSG_extDescription__",
  "version": "2.3.7",
  "manifest_version": 3,
  "name": "__MSG_extName__",
  "short_name": "S=S+S",
  "author": "Diego Presno",
  "default_locale": "en",
  "permissions": [
    "contextMenus",
    "storage",
    "alarms",
    "clipboardWrite",
    "clipboardRead"
  ],
  "host_permissions": [
    "https://simpleselectsearch.com/*",
    "https://www.google-analytics.com/*"
  ],
  "options_page": "options.html",
  "background": {
    "scripts": [
      "background.bundle.js"
    ]
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": "icon-34.png"
  },
  "icons": {
    "128": "icon-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "firefox@simpleselectsearch.com",
      "strict_min_version": "126.0"
    }
  }
}