Examine source code of SenseWatch

{
  "manifest_version": 3,
  "name": "SenseWatch - Track Page Changes",
  "version": "3.2.0",
  "description": "Monitor web page elements for changes with visual selection. Get notified instantly when content changes.",
  "permissions": [
    "storage",
    "alarms",
    "notifications",
    "cookies",
    "scripting"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "modules/site-adapters.js",
        "modules/picker/Inspector.js",
        "modules/picker/Picker.js",
        "content.js"
      ],
      "run_at": "document_idle",
      "all_frames": true
    }
  ],
  "action": {
    "default_popup": "popup.html",
    "default_title": "SenseWatch - Click to manage monitored elements",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon16.png",
      "48": "icons/icon48.png",
      "64": "icons/icon48.png",
      "96": "icons/icon96.png",
      "128": "icons/icon128.png"
    }
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "chart.min.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "webmonitor@example.com",
      "strict_min_version": "140.0"
    }
  }
}