Responsive Web Design Tester

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "background": {
    "page": "background.html"
  },
  "options_page": "options.html",
  "name": "Responsive Web Design Tester",
  "short_name": "RWD Tester",
  "description": "Responsive Web Design Tester is a quick and easy way to test your responsive website.",
  "version": "2.0",
  "offline_enabled": true,
  "browser_action": {
    "default_icon": {
      "19": "img/icon19.png",
      "38": "img/icon38.png"
    },
    "default_popup": "popup.html",
    "default_title": "Responsive Web Design Tester"
  },
  "icons": {
    "16": "img/icon16.png",
    "48": "img/icon48.png",
    "128": "img/icon128.png"
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "tabs",
    "http://*/",
    "https://*/",
    "contextMenus"
  ]
}