Examine source code of Simple Plain Text Copy

{
  "browser_action": {
    "default_title": "__MSG_extName__",
    "default_popup": "copy.html",
    "default_icon": "icons/exif128.png"
  },
  "default_locale": "en",
  "description": "__MSG_extDesc__",
  "manifest_version": 2,
  "name": "__MSG_extName__",
  "icons": {
    "16": "icons/exif16.png",
    "32": "icons/exif32.png",
    "64": "icons/exif64.png",
    "128": "icons/exif128.png"
  },
  "permissions": [
    "http://*/*",
    "https://*/*",
    "contextMenus",
    "clipboardWrite",
    "<all_urls>"
  ],
  "content_scripts": [
    {
      "run_at": "document_end",
      "matches": [
        "https://*/*",
        "http://*/*"
      ],
      "js": [
        "js/jquery-3.2.1.min.js",
        "js/content-script.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "js/background.js"
    ]
  },
  "version": "1.0.0"
}