Examine source code of Scroll To Bottom Now

{
  "manifest_version": 2,
  "name": "Scroll To Bottom Now",
  "version": "1.0",
  "description": "Quickly scroll to the bottom of any webpage with one click.",
  "permissions": [
    "activeTab"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_title": "Scroll To Bottom",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{6f0b70a3-b605-4408-b31f-ae14a3b784c7}"
    }
  }
}