Examine source code of Short3n.me

{
  "name": "Short3n.me",
  "version": "1.0.2resigned1",
  "manifest_version": 2,
  "description": "Lege Shortlinks über unsere API direkt in deinem Browser an.",
  "options_ui": {
    "page": "options/options.html",
    "open_in_tab": false
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "support@short3n.me",
      "strict_min_version": "64.0"
    }
  },
  "icons": {
    "16": "icons/16x16.png",
    "19": "icons/19x19.png",
    "38": "icons/38x38.png",
    "48": "icons/48x48.png",
    "128": "icons/128x128.png"
  },
  "permissions": [
    "activeTab",
    "storage",
    "https://short3n.me/"
  ],
  "browser_action": {
    "default_icon": {
      "19": "icons/19x19.png",
      "38": "icons/38x38.png"
    },
    "default_title": "short3n.me",
    "default_popup": "popup/popup.html"
  }
}