Examine source code of Kampus Fixer

{
  "manifest_version": 3,
  "name": "Kampus Fixer",
  "description": "This extension fixes some problems in the Kampus educational platform, like non-ascii characters crashing the whole page.",
  "version": "0.0.5",
  "icons": {
    "16": "icons/kafi_16.png",
    "48": "icons/kafi_48.png",
    "128": "icons/kafi_128.png"
  },
  "action": {
    "default_icon": "icons/kafi_128.png"
  },
  "permissions": [
    "activeTab",
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://kampus.sanomapro.fi/*"
      ],
      "js": [
        "kafi.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "kafi@kafi.com",
      "strict_min_version": "58.0"
    }
  }
}