Examine source code of Simple Copy-Paste Boxes

{
  "manifest_version": 2,
  "name": "Simple Copy-Paste Notepad",
  "version": "1.0",
  "description": "A simple Copy-Paste Notepad for making copy-pasting the same thing easy. Saves text values and allows you to copy them to the clipboard.",
  "icons": {
    "48": "icon.png"
  },
  "permissions": [
    "activeTab",
    "storage"
  ],
  "browser_action": {
    "default_popup": "popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f1bfab4e-9815-4675-a8b8-ccfdc9d5061e}"
    }
  }
}