Examine source code of Keywords FInder

{
  "manifest_version": 3,
  "name": "Appen Keyword Matcher",
  "version": "1.0",
  "description": "Finds matching keywords between input and output in Firefox",
  "action": {
    "default_popup": "popup/popup.html",
    "default_icon": "icons/icon48.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.appen.io/*"
      ],
      "js": [
        "lib/purify.js",
        "content.js"
      ]
    }
  ],
  "permissions": [
    "activeTab"
  ],
  "host_permissions": [
    "*://*.appen.io/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "word-finder@yourdomain.com",
      "strict_min_version": "109.0"
    }
  }
}