Examine source code of Slottle

{
  "manifest_version": 3,
  "name": "Slottle",
  "description": "Schedule generator right in your browser",
  "version": "1.2.3",
  "action": {
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    },
    "default_title": "Open Slottle"
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "icons/icon16-dark.png",
        "icons/icon48-dark.png",
        "icons/icon128-dark.png",
        "icons/slottledark.png",
        "icons/slottlelight.png"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "cookies",
    "storage"
  ],
  "host_permissions": [
    "https://archershub.dlsu.edu.ph/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "slottle@scheduler",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}