Twitter Pixel Helper

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "description": "Displays an icon if there is a Twitter website tag on a given page",
  "icons": {
    "128": "icon.png"
  },
  "manifest_version": 2,
  "name": "Twitter Pixel Helper",
  "browser_action": {
    "default_icon": {
      "128": "icon.png"
    },
    "default_popup": "popup.html",
    "default_title": "There is a Twitter website tag on this page"
  },
  "permissions": [
    "background",
    "tabs",
    "storage",
    "webRequest",
    "*://*/*"
  ],
  "version": "2.0.2"
}