Examine source code of Demonlist+

{
  "manifest_version": 3,
  "name": "Demonlist+",
  "version": "1.2.1",
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "64": "icons/icon-64.png",
    "96": "icons/icon-96.png"
  },
  "description": "Customizes your pointercrate website experience. ",
  "permissions": [
    "https://pointercrate.com/*",
    "https://www.pointercrate.com/*",
    "storage"
  ],
  "content_scripts": [
    {
      "js": [
        "demonlist.js"
      ],
      "css": [
        "demonlist-old.css",
        "demonlist-style.css"
      ],
      "matches": [
        "https://pointercrate.com/*",
        "https://www.pointercrate.com/*"
      ],
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "supporters.txt",
        "demonlist-old.css",
        "demonlist-style.css",
        "icons/android-chrome-192x192.png",
        "icons/android-chrome-512x512.png",
        "icons/apple-touch-icon.png",
        "icons/favicon-16x16.png",
        "icons/favicon-32x32.png",
        "icons/favicon.ico",
        "icons/site.webmanifest"
      ],
      "matches": [
        "*://*/*"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{56bb9c66-2103-4d33-841a-e50f7486a30f}"
    }
  }
}