Examine source code of FastTranslate

{
  "manifest_version": 3,
  "name": "FastTranslate",
  "version": "1.2",
  "description": "Adds a context menu entry that shows the translation of the selected text.",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "contextMenus",
    "activeTab",
    "storage",
    "scripting"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "action": {
    "default_icon": "icons/fast-translate.svg",
    "default_title": "FastTranslate"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "fast_translate@hannos.at"
    }
  },
  "options_ui": {
    "page": "options.html"
  }
}