Examine source code of plug

{
  "manifest_version": 2,
  "name": "RAM Guardian",
  "version": "1.1",
  "description": "Monitor and optimize tab memory usage to improve browser performance.",
  "browser_specific_settings": {
    "gecko": {
      "id": "{cc6051f2-08f9-422f-b7e2-c6a646cfbf2a}",
      "strict_min_version": "113.0"
    }
  },
  "background": {
    "scripts": [
      "background_ram.js"
    ]
  },
  "browser_action": {
    "default_icon": "icon64.png",
    "default_title": "RAM Guardian",
    "default_popup": "popup_ram.html"
  },
  "permissions": [
    "tabs"
  ],
  "icons": {
    "64": "icon64.png",
    "128": "icon128.png"
  }
}