Examine source code of ocpad

{
  "manifest_version": 2,
  "name": "ocpad",
  "version": "1.2.2",
  "author": "Alfred Bühler",
  "description": "Notepad for ownCloud-Notes.",
  "homepage_url": "https://codeberg.org/abu/ocpad",
  "applications": {
    "gecko": {
      "id": "{60100672-55b7-4447-b3e7-efb7fe11c894}"
    }
  },
  "icons": {
    "32": "icons/owncloud-32.png",
    "48": "icons/owncloud-48.png",
    "96": "icons/owncloud-96.png"
  },
  "permissions": [
    "storage",
    "notifications",
    "<all_urls>"
  ],
  "browser_action": {
    "browser_style": false,
    "default_icon": "icons/owncloud-32.png",
    "default_title": "Notepad for ownCloud-Notes",
    "default_popup": "popup/ocpad.html"
  },
  "options_ui": {
    "browser_style": true,
    "page": "options/options.html"
  }
}