Examine source code of ElevOpgaver

{
  "manifest_version": 3,
  "name": "ElevOpgaver",
  "description": "Laver en list over elevens manglende opgaver fra elevens opgave side.",
  "version": "1.0",
  "permissions": [
    "activeTab"
  ],
  "action": {
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.lectio.dk/*/OpgaverElev.aspx?*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "64": "icons/icon64.png",
    "128": "icons/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "elevopgaver@tfsoft",
      "strict_min_version": "109.0"
    }
  }
}