Examine source code of Page Screenshotc

{
  "manifest_version": 2,
  "name": "Page Screenshot",
  "version": "1.0",
  "description": "Take a screenshot of the current page.",
  "permissions": [
    "activeTab",
    "tabs"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_icon": "icon.png",
    "default_title": "Take Screenshot"
  },
  "icons": {
    "48": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{5fd36f0f-a4fb-4dd2-a14a-b3f9bc193d12}"
    }
  }
}