Percent Scroll Widget

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Percent Scroll Widget",
  "short_name": "% Scroll",
  "version": "1",
  "manifest_version": 2,
  "description": "Use this to keep track how far down the webpage you are. A bit neurotic. Maybe just ignore this and enjoy life, actually.",
  "homepage_url": "https://github.com/alecglassford/percent-scroll-widget",
  "permissions": [
    "activeTab"
  ],
  "background": {
    "scripts": [
      "js/background.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_title": "Add a widget to this page that tells you how much you've scrolled through.",
    "default_icon": {
      "16": "images/icon16.png",
      "24": "images/icon24.png",
      "32": "images/icon32.png"
    }
  },
  "icons": {
    "16": "images/icon16.png",
    "48": "images/icon48.png",
    "128": "images/icon128.png"
  }
}