Examine source code of TopJump — Scroll to Top

{
  "manifest_version": 2,
  "name": "TopJump — Scroll to Top",
  "version": "1.0.0",
  "description": "Adds a floating 'scroll to top' button on web pages. Toggle via toolbar. No data collection.",
  "browser_action": {
    "default_title": "Toggle Scroll-to-Top Button",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "activeTab"
  ],
  "icons": {
    "48": "icons/icon48.png",
    "96": "icons/icon96.png",
    "128": "icons/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "topjump-scroll@example.com",
      "strict_min_version": "58.0"
    }
  }
}