IPviewer

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "browser_action": {
    "default_icon": "icon.png",
    "default_popup": "popup.html"
  },
  "description": "This extension displays your current IP in a popup",
  "manifest_version": 2,
  "version": "0.0.6",
  "name": "IPviewer",
  "short_name": "IPviewer",
  "permissions": [
    "activeTab",
    "webRequest",
    "*://*.ip-show.com/",
    "tabs"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://www.ip-show.com/"
      ],
      "js": [
        "copy.js",
        "jquery.min.js",
        "bootstrap.min.js"
      ],
      "css": [
        "bootstrap.min.css"
      ],
      "run_at": "document_end"
    }
  ]
}