Examine source code of Photon Slides Assistant

{
  "browser_specific_settings": {
    "gecko": {
      "id": "photonslidesassistant.itsmarzzzzzz@protonmail.com"
    }
  },
  "name": "Photon Slides Assistant",
  "version": "1.2.2",
  "manifest_version": 3,
  "description": "Assistant for Photon Slides | Store slides",
  "author": "Marsss' Dev Team",
  "permissions": [
    "activeTab",
    "storage"
  ],
  "icons": {
    "16": "assets/icon-16.png",
    "32": "assets/icon-32.png",
    "48": "assets/icon-48.png",
    "128": "assets/icon-128.png",
    "256": "assets/icon-256.png",
    "512": "assets/icon-512.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://itsmarsss.github.io/Photon-Slides/app/*"
      ],
      "js": [
        "scripts/content.js"
      ]
    }
  ],
  "action": {
    "default_popup": "/popup/popup.html"
  }
}