Examine source code of TabMigo — Visual Bookmark Manager

{
  "manifest_version": 3,
  "name": "TabMigo — Visual Bookmark Manager & New Tab",
  "version": "1.0.1",
  "description": "Visual bookmark manager & custom new tab. Save any tab in one click; organize bookmarks, notes & to-dos on tiled workspace boards.",
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "action": {
    "default_title": "Save to TabMigo",
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png"
    }
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "commands": {
    "_execute_action": {
      "suggested_key": {
        "default": "Alt+B"
      },
      "description": "Open the Save to TabMigo popup"
    }
  },
  "permissions": [
    "activeTab",
    "storage",
    "tabs"
  ],
  "host_permissions": [
    "https://tabmigo.com/*"
  ],
  "optional_host_permissions": [
    "https://*/*",
    "http://*/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "tabmigo-bookmarker@tabmigo.com",
      "strict_min_version": "128.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  }
}