Examine source code of Invisible Character

{
  "name": "Invisible Character",
  "version": "1.0",
  "description": "Copy Invisible Character From This Extension By Just One Click And Paste Where Ever You Want To Paste",
  "manifest_version": 2,
  "content_scripts": [
    {
      "js": [
        "jquery.min.js"
      ],
      "matches": [
        "http://*/*",
        "https://*/*"
      ]
    }
  ],
  "browser_action": {
    "name": "Manipulate DOM",
    "default_icon": "icon.png",
    "default_popup": "popup.html",
    "scripts": [
      "background.js"
    ]
  }
}