Select2 Everywhere

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Select2 Everywhere",
  "version": "1.0",
  "description": "Makes options in select box searchable",
  "permissions": [
    "activeTab"
  ],
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*",
        "file:///*"
      ],
      "js": [
        "select2/jquery-3.3.1.min.js",
        "select2/select2.min.js",
        "convertor.js"
      ],
      "css": [
        "select2/select2.min.css"
      ],
      "run_at": "document_end"
    }
  ],
  "icons": {
    "16": "images/icon_16.png",
    "32": "images/icon_32.png",
    "48": "images/icon_48.png",
    "128": "images/icon_128.png"
  },
  "manifest_version": 2
}