Examine source code of Quick Tab Suspender

{
  "manifest_version": 2,
  "name": "Quick Tab Suspender",
  "version": "1.0",
  "description": "Suspend all inactive tabs to free up memory with a single click.",
  "browser_specific_settings": {
    "gecko": {
      "id": "{5a6a1813-33fc-4593-bd5e-b4df16cd94c7}",
      "strict_min_version": "115.0"
    }
  },
  "background": {
    "scripts": [
      "background_suspend.js"
    ]
  },
  "browser_action": {
    "default_icon": "icon64.png",
    "default_title": "Suspend Tabs"
  },
  "permissions": [
    "tabs"
  ],
  "icons": {
    "64": "icon64.png",
    "128": "icon128.png"
  }
}