Examine source code of in-fo-nt

{
  "manifest_version": 2,
  "name": "in-fo-nt",
  "version": "1.0",
  "description": "gives you information about fonts in a webpage",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "48": "/in-fo-nt48.png"
  },
  "browser_action": {
    "browser_style": true,
    "default_icon": {
      "48": "/in-fo-nt48.png"
    },
    "default_title": "in-fo-nt"
  },
  "permissions": [
    "storage",
    "activeTab"
  ]
}