Examine source code of Focus Log

{
  "manifest_version": 3,
  "name": "Focus Log",
  "version": "1.1.5",
  "description": "A simple web extension that helps you keep track of what you did.",
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "permissions": [
    "storage"
  ],
  "icons": {
    "16": "images/icon-16.png",
    "32": "images/icon-32.png",
    "48": "images/icon-48.png",
    "128": "images/icon-128.png"
  },
  "action": {
    "default_title": "What are you working on?",
    "default_popup": "popup.html",
    "default_icon": {
      "16": "images/icon-inactive-16.png",
      "24": "images/icon-inactive-24.png",
      "32": "images/icon-inactive-32.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "focus-log@userbrain.com",
      "strict_min_version": "109.0"
    }
  }
}