Examine source code of Simple Suspender

{
  "name": "Simple Suspender",
  "version": "1.0",
  "manifest_version": 2,
  "description": "Suspend / unsuspend a tab, with minimal privacy concerns by design",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_icon": "icon.png",
    "default_title": "Suspend"
  },
  "icons": {
    "16": "icon16.png",
    "32": "icon32.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "permissions": [
    "activeTab"
  ]
}