Examine source code of LinQR

{
  "name": "LinQR",
  "version": "1.4resigned1",
  "description": "Generates QRCode of the current URL for viewing on mobile devices",
  "manifest_version": 2,
  "browser_action": {
    "default_icon": "icon.png",
    "default_popup": "qrcode.html",
    "default_title": "LinQR"
  },
  "page_action": {
    "browser_style": true,
    "default_icon": {
      "24": "icon.png"
    },
    "default_title": "LinQR",
    "default_popup": "qrcode.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "activeTab"
  ],
  "icons": {
    "16": "icon-16.png",
    "24": "icon-24.png",
    "128": "icon-128.png",
    "512": "icon-512.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{0ad73bef-845a-4006-ae43-f9ca77c36798}"
    }
  }
}