Responsive design tester

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "background": {
    "scripts": [
      "jquery.min.js",
      "background.js"
    ]
  },
  "browser_action": {
    "default_icon": "icon-64x64.png",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "css": [
        "content.css"
      ],
      "js": [
        "jquery.min.js",
        "content.js"
      ],
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "run_at": "document_start"
    }
  ],
  "description": "Test your websites responsivness",
  "icons": {
    "64": "icon-64x64.png",
    "128": "icon-128x128.png",
    "256": "icon-256x256.png"
  },
  "manifest_version": 2,
  "name": "Responsive design tester",
  "short_name": "Responsive design tester",
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "*://*/*",
    "tabs"
  ],
  "version": "1.1"
}